Introduction
Hub-and-spoke cartels are one of the most complex and increasingly important issues under Turkish Competition Law. Unlike traditional cartels, where competitors communicate directly with each other, hub-and-spoke arrangements involve indirect coordination through a common intermediary. This intermediary may be a supplier, retailer, distributor, platform, trade association, consultant, data provider, marketplace operator or another undertaking positioned between competing market players.
In a typical hub-and-spoke structure, the hub is the intermediary that receives, transmits or facilitates commercially sensitive information. The spokes are the competing undertakings that coordinate indirectly through the hub. In some cases, there may also be a rim, meaning the horizontal understanding or common awareness between the spokes that the hub is being used to coordinate market behavior.
Turkish competition legislation does not contain a separate provision expressly titled “hub-and-spoke cartel.” The Turkish Competition Authority has stated in its OECD note that hub-and-spoke arrangements are not explicitly regulated under Turkish competition legislation; instead, the main legal basis remains Law No. 4054 on the Protection of Competition, particularly Article 4, which prohibits restrictive agreements, concerted practices and decisions of associations of undertakings.
This does not mean that hub-and-spoke cartels fall outside Turkish law. On the contrary, Article 4 is broad enough to capture both direct and indirect coordination. If competitors use a vertical partner or intermediary to exchange future prices, coordinate discounts, monitor market behavior, align resale prices, allocate customers or restrict supply, the arrangement may be treated as an anti-competitive agreement or concerted practice.
1. What Is a Hub-and-Spoke Cartel?
A hub-and-spoke cartel is a form of indirect coordination between competitors. The structure can be visualized as a wheel. The hub is at the center, and the spokes are the competitors connected to the hub. The competing undertakings may not communicate directly with each other, but they may nevertheless coordinate through the hub.
For example, several retailers may complain to a common supplier about discounting in the market. The supplier may then contact each retailer, communicate competitors’ future price intentions, pressure them to raise prices, and report back that others will also follow. Even if the retailers never speak directly, they may still be coordinating through the supplier.
Another example may involve an online marketplace. Competing sellers may provide future pricing information to the platform. The platform may use that information to recommend aligned prices or discipline sellers that deviate. If the sellers understand that the platform is facilitating coordination among them, a hub-and-spoke cartel risk may arise.
A third example may involve a trade association or consultant. Competing companies may provide sensitive data to an intermediary, which then circulates individualized or near-current information in a way that allows competitors to align their conduct.
The defining feature is indirect horizontal coordination. The conduct may appear vertical on the surface, but its economic effect may be horizontal collusion.
2. Legal Basis Under Article 4 of Law No. 4054
Article 4 of Law No. 4054 prohibits agreements and concerted practices between undertakings, as well as decisions and practices of associations of undertakings, that have as their object, effect or likely effect the prevention, distortion or restriction of competition directly or indirectly in a particular market for goods or services. The official text specifically refers to restrictions such as price fixing, allocation of markets, control of supply or demand and restriction of competitors’ activities.
Hub-and-spoke cartels may violate Article 4 because they can produce the same harm as direct cartels. If competitors coordinate prices indirectly through a supplier, the market effect is still price fixing. If retailers use a platform to align discounts, the absence of direct communication does not remove competition law risk. If competitors use a trade association to exchange future strategy, the association structure does not make the conduct lawful.
The Turkish Competition Authority has explained that the main Turkish legislation prohibiting cartels, concerted practices and anti-competitive agreements is Law No. 4054, even though hub-and-spoke arrangements are not separately named in the statute.
Therefore, the analysis focuses on substance. The Authority asks whether undertakings acted independently or whether their competitive behavior was influenced by coordination through an intermediary.
3. The Elements of a Hub-and-Spoke Arrangement
A hub-and-spoke case usually involves several elements.
First, there must be a hub. This may be a supplier, distributor, platform, association, consultant, franchisor, data service provider or retailer. The hub usually has vertical relationships with the spokes.
Second, there must be spokes. These are undertakings that compete with each other at the same market level. For example, competing retailers, competing distributors, competing sellers, competing employers or competing suppliers may be spokes.
Third, there must be an exchange or facilitation mechanism. The hub may collect, transmit, verify, monitor or enforce commercially sensitive information. This information may concern future prices, discounts, stock levels, campaign timing, margins, wage policies, customer allocation or supply plans.
Fourth, there must usually be some form of horizontal awareness or common understanding. The spokes should know, or reasonably understand, that the information they provide to the hub may be transmitted to competitors or used to coordinate market behavior. This is often the most difficult element to prove.
Fifth, the arrangement must restrict competition by object or effect. In price fixing, customer allocation, bid rigging or coordinated resale price maintenance cases, the restrictive object may be easier to establish.
4. Hub-and-Spoke Cartels vs. Ordinary Vertical Relationships
Not every vertical communication creates a hub-and-spoke cartel. Suppliers and retailers regularly exchange information for legitimate business reasons. A supplier may need sales forecasts, stock information, demand estimates, delivery data, marketing plans or product feedback from its distributors. A platform may need seller data to operate the marketplace. A franchisor may need operational information from franchisees.
The legal problem arises when the vertical relationship becomes a channel for horizontal coordination. For example, a supplier may legitimately discuss delivery schedules with a retailer. But if the supplier tells the retailer that other retailers will increase prices next week and asks the retailer to do the same, the communication becomes risky.
The Turkish Competition Authority’s 2019 OECD note emphasizes the challenge of distinguishing lawful vertical information flows from indirect horizontal collusion. It recognizes that hub-and-spoke arrangements are difficult because enforcement authorities must identify when vertical conduct becomes a means of horizontal coordination.
This distinction is crucial for businesses. Commercial communication with suppliers, distributors and platforms is normal. However, companies must not use these relationships to obtain or transmit competitors’ future commercial strategies.
5. The Role of Commercially Sensitive Information
Hub-and-spoke cartels often depend on the exchange of commercially sensitive information. Such information may include:
Future prices
Planned discounts
Campaign timing
Profit margins
Stock levels
Supply shortages
Customer-specific offers
Tender participation
Regional sales plans
Wage or benefit policies
Production quantities
Marketplace ranking strategies
Future resale price intentions
The risk is highest where the information is future-oriented, non-public, individualized and strategically useful. Historical, aggregated and anonymized data is generally lower risk, but context still matters.
For example, a supplier collecting monthly aggregate sales data to plan production may be low risk. A supplier collecting each retailer’s future price increase plans and communicating them to others is high risk.
In hub-and-spoke cases, the intermediary often acts as the information channel. The spokes may avoid direct competitor communication, but the market effect can be the same as direct information exchange.
6. Retail Markets and Supplier-Facilitated Coordination
Retail markets are a classic setting for hub-and-spoke cartel allegations. Suppliers often interact with many competing retailers. They may receive complaints from retailers about discounting, online prices, promotions or margin erosion. If the supplier uses these complaints to pressure other retailers, the supplier may become a hub.
A risky pattern may look like this:
Retailer A complains to the supplier that Retailer B is discounting.
The supplier contacts Retailer B and asks it to raise prices.
The supplier tells Retailer B that other retailers are following the recommended price.
Retailer B raises prices.
The supplier reports this back to Retailer A.
Retailers understand that the supplier is enforcing price discipline across the market.
This pattern may involve both resale price maintenance and hub-and-spoke coordination. The supplier may be restricting resale prices vertically, while retailers may be indirectly coordinating horizontally.
The Turkish Competition Authority’s note on competition and inflation stated that investigations in the fast-moving consumer goods retail sector shaped Turkish enforcement because common ways of doing business were found capable of causing violations such as hub-and-spoke cartels, exchanges of competitively sensitive information and resale price maintenance.
7. The FMCG Chain Markets Investigation
The fast-moving consumer goods retail sector has been especially important in Turkish hub-and-spoke enforcement. The Turkish Competition Authority’s materials explain that common supplier-retailer practices in FMCG markets may create hub-and-spoke risks, sensitive information exchange and resale price maintenance concerns.
In the chain markets decision, the Board examined indirect contacts and supplier-related coordination mechanisms. The official decision text states that Turkish and EU competition law strictly prohibit all kinds of direct or indirect contact having as its object or effect the influencing of competitors’ market behavior or disclosing market behavior they have planned or decided to adopt.
This is a key principle. The prohibition is not limited to direct competitor meetings. If the contact is indirect but affects competitors’ market behavior, Article 4 risk remains.
The FMCG context also demonstrates why hub-and-spoke arrangements are difficult in practice. Suppliers and retailers must communicate regularly. They discuss product supply, campaigns, promotions, stock, logistics and consumer demand. However, those communications become unlawful if they are used to coordinate competing retailers’ prices or commercial strategies.
8. The Frito-Lay Decision and Hub-and-Spoke Characterization
A recent and significant example is the Frito-Lay decision, published in 2026. The decision describes conduct involving agreements or concerted practices of a hub-and-spoke cartel nature, aimed at determining retail sales prices by facilitating the sharing of competitively sensitive information such as future prices and by coordinating retail-level undertakings with regard to the supplier’s products.
This decision is important for several reasons. First, it confirms that the Turkish Competition Board uses hub-and-spoke reasoning in modern enforcement. Second, it shows the close relationship between resale price maintenance and indirect information exchange. Third, it demonstrates that future pricing information is especially sensitive. Fourth, it confirms that supplier conduct may be assessed not only as vertical pressure but also as a mechanism of horizontal coordination among retailers.
For companies, the practical lesson is clear: a supplier must not become the messenger, monitor or enforcer of retailers’ pricing expectations.
9. Resale Price Maintenance and Hub-and-Spoke Cartels
Resale price maintenance and hub-and-spoke cartels frequently overlap. RPM occurs when a supplier restricts a reseller’s freedom to determine resale prices. Hub-and-spoke coordination occurs when the supplier also facilitates alignment among competing resellers.
For example, if a supplier simply tells a dealer not to sell below a recommended price, that may be RPM. If the supplier also collects complaints from other dealers, informs each dealer that others will follow the same price, monitors deviations and reports compliance back to the network, the conduct may also have a hub-and-spoke dimension.
The Turkish Competition Authority’s OECD note states that Turkish vertical rules provide guidance on resale price maintenance and vertical relationships, partly to prevent horizontal collusive side effects, even though they do not expressly emphasize hub-and-spoke arrangements.
This means suppliers should not treat RPM as an isolated vertical issue. Where multiple resellers are involved, RPM pressure can easily become a mechanism for horizontal coordination.
10. Online Platforms as Hubs
Digital platforms can also act as hubs. Online marketplaces, app stores, food delivery platforms, hotel booking platforms, advertising platforms, mobility platforms and price comparison websites may collect large amounts of seller data. They may know sellers’ prices, stock, discounts, campaign plans, conversion rates and customer demand.
A platform may create hub-and-spoke risk if it uses this data to coordinate sellers. For example, a platform may recommend that all sellers increase prices, punish sellers that discount, share one seller’s pricing strategy with another, or design algorithms that align seller behavior.
The Turkish Competition Authority has increasingly focused on digital markets, and its materials on potential competition and digital markets note concerns regarding e-marketplaces, entry barriers and platform-related competition risks.
Digital hub-and-spoke risks are especially serious because coordination may occur through dashboards, algorithms, automated recommendations, ranking rules or pricing tools rather than through traditional meetings.
11. Algorithms and Hub-and-Spoke Risks
Algorithmic pricing can create a modern form of hub-and-spoke coordination. If competing sellers use the same pricing software and the software provider collects their confidential pricing data, the provider may become a hub. If the software then generates coordinated price recommendations, the sellers may become spokes.
Similarly, an online marketplace may operate a pricing recommendation tool. If the tool is based on seller-specific confidential data and encourages price alignment, it may raise Article 4 concerns.
The legal issue is not whether the coordination is manual or automated. Turkish Competition Law is technology-neutral. If the economic effect is coordination between competitors, the use of software does not make the conduct lawful.
Companies using pricing algorithms should therefore ask whether the provider serves competitors, whether it uses non-public competitor data, whether recommendations are individualized or market-wide, and whether the system reduces independent pricing decisions.
12. Trade Associations as Hubs
Trade associations may also become hubs. Associations often collect data from members, organize meetings, publish reports and communicate sectoral positions. These activities may be lawful if properly structured. However, an association may facilitate hub-and-spoke coordination if it collects competitively sensitive data from members and circulates it in a way that enables alignment.
For example, an association may collect future price expectations from members and publish a report showing market-wide planned increases. It may organize meetings where members discuss future wage policies or tender plans. It may issue recommended prices or margins.
Article 4 expressly covers decisions and practices of associations of undertakings. Therefore, association conduct may itself violate Turkish Competition Law if it restricts competition.
Companies attending association meetings should avoid discussions on future prices, discounts, production, customers, tenders, wages or market allocation. If such topics arise, participants should object and leave if necessary.
13. Consultants, Data Providers and Research Firms
Consultants and data providers may also act as hubs. Market research can be lawful and useful, but it becomes risky if it allows competitors to identify each other’s current or future strategies.
A research firm may collect pricing data from competitors and circulate detailed reports. A consultant may advise competitors based on confidential inputs from each of them. A category management provider may transmit sensitive retailer data between market participants. A salary benchmarking firm may circulate current wage plans in a concentrated labor market.
The legal risk depends on whether the information is aggregated, anonymized, historical and non-strategic. Real-time, individualized and future-oriented data is far more dangerous.
Companies should review data-sharing arrangements carefully. Contracts with consultants should include confidentiality, data segregation, aggregation and competition law compliance obligations.
14. Hub-and-Spoke Arrangements in Labor Markets
Hub-and-spoke coordination can also occur in labor markets. Employers may coordinate through a recruitment agency, industry association, franchisor, outsourcing company or HR consultancy. The hub may transmit salary expectations, hiring restrictions or no-poach commitments between competing employers.
For example, a recruitment agency may tell several employers not to hire each other’s employees. A franchisor may instruct franchisees not to recruit staff from one another. An association may circulate future wage increase plans among member companies.
Although labor-market issues are often discussed separately, the structure is similar: competing employers are the spokes, and the intermediary is the hub. The anti-competitive effect may be wage suppression or restriction of employee mobility.
Employers should therefore include HR teams in competition compliance programs. No-poach agreements, wage-fixing and sensitive salary data exchange can create serious Article 4 risks.
15. Evidence in Hub-and-Spoke Cartel Investigations
Hub-and-spoke cartels are usually proven through a combination of direct and circumstantial evidence. The Turkish Competition Authority may examine:
Emails between suppliers and retailers
WhatsApp messages
Dealer complaints
Price monitoring reports
Internal supplier presentations
Retailer meeting notes
Trade association records
Platform dashboards
Algorithmic pricing logs
Consultant reports
Sales team instructions
Stock allocation records
Bonus or rebate documents
Evidence of simultaneous price changes
Documents showing future price information
Because direct competitor communication may be absent, the Authority may focus on patterns of indirect communication and market behavior. It may ask whether the hub transmitted information between spokes, whether the spokes knew or should have known this, and whether the market behavior changed accordingly.
Companies should assume that informal commercial communications may later be reviewed. Language such as “all retailers will follow,” “we informed the others,” “the market must be disciplined,” “we will correct the discounting seller,” or “everyone will increase prices next week” can be damaging.
16. The Importance of Awareness Among the Spokes
One of the most difficult legal questions in hub-and-spoke cases is whether the spokes were aware of the coordination. If a retailer provides information to a supplier for a legitimate purpose and has no reason to believe that it will be shared with competitors, liability may be more difficult to establish. However, if the retailer knows that the supplier is transmitting information to other retailers and uses that information to align conduct, the risk becomes serious.
Awareness may be inferred from repeated communications, explicit references to competitors, complaints about deviations, supplier reports on other retailers’ behavior, or coordinated market responses. The more a spoke relies on information received through the hub, the stronger the evidence of coordination may become.
For compliance purposes, companies should not accept competitor information through intermediaries. If a supplier, platform or consultant shares competitor-sensitive information, the recipient should reject it, not use it and report the incident internally.
17. Hub-and-Spoke Cartels and Settlement
Hub-and-spoke cartel investigations may be resolved through settlement in appropriate cases. Settlement may reduce administrative fines if the undertaking accepts the existence and scope of the infringement. However, settlement also has legal consequences, including potential impact on private damages claims and restrictions on challenging the settled issues.
For serious cartel-type conduct, commitment procedures may be limited. Turkish competition materials on commitments state that certain anti-competitive agreements, particularly hardcore restrictions such as price fixing and market allocation, cannot benefit from commitment procedures.
Therefore, where a hub-and-spoke arrangement involves price fixing or market allocation, companies should not assume that commitments will be available. The realistic strategic options may be full defense, settlement or leniency where cartel conditions are met.
18. Administrative Fines and Legal Consequences
Hub-and-spoke cartels may lead to significant administrative fines. Under Law No. 4054, undertakings that violate Articles 4, 6 or 7 may face administrative fines of up to 10% of annual gross revenues. Managers or employees who had decisive influence in the infringement may also face personal fines of up to 5% of the fine imposed on the undertaking or association of undertakings.
The legal consequences may also include invalidity of anti-competitive agreements, private damages claims, reputational harm, dealer disputes, platform disputes, public procurement consequences and internal disciplinary action.
In hub-and-spoke cases, both the hub and the spokes may face exposure. A supplier or platform cannot assume that only retailers are liable. A retailer cannot assume that avoiding direct contact with competitors eliminates risk. Liability depends on each party’s role, knowledge and contribution to the coordination.
19. Private Damages Risk
A hub-and-spoke cartel may harm consumers, retailers, distributors, suppliers or competitors. If prices are increased or discounts are suppressed, customers may claim that they paid more than they would have paid under competitive conditions. Competitors excluded by coordinated conduct may claim lost profits.
Law No. 4054 includes private law consequences for competition law infringements, including compensation liability for those who restrict competition and the possibility of enhanced damages in certain cases.
Therefore, companies should consider civil litigation risk when responding to hub-and-spoke investigations. A Competition Board infringement decision may support follow-on damages actions.
20. Practical Compliance Rules for Suppliers
Suppliers are often potential hubs, especially in retail distribution markets. A supplier should not collect and transmit competitor-sensitive information between retailers. It should not tell one retailer what another retailer plans to do. It should not use retailer complaints to discipline discounting competitors. It should not monitor online prices to enforce minimum resale prices. It should not report compliance or non-compliance across the retail network.
Supplier sales teams should receive specific training. They should know how to respond when a retailer complains about another retailer’s low prices. A safe response may focus on lawful issues such as counterfeit goods, unauthorized sales, misleading advertising or quality standards. The supplier should not promise to “fix” another retailer’s prices.
Internal systems should also be reviewed. Dashboards identifying “non-compliant” retailers based on price may create risk if used to pressure sellers.
21. Practical Compliance Rules for Retailers and Distributors
Retailers and distributors should not use suppliers as messengers to coordinate with other retailers. They should not complain to suppliers for the purpose of raising competitors’ prices. They should not ask suppliers what competitors will do. They should not rely on competitor information received from suppliers when setting prices.
If a supplier tells a retailer that other retailers will increase prices, the retailer should not use that information. It should report the communication to legal or compliance teams. In some cases, the company may need to distance itself in writing.
Retailers should also be careful in dealer meetings, platform communications and trade associations. They should independently determine prices, discounts, campaigns and customer strategies.
22. Practical Compliance Rules for Platforms
Platforms should design data and pricing tools carefully. They should not share seller-specific confidential information with competing sellers. They should not pressure sellers to align prices. They should not use ranking systems to enforce price parity unless legally reviewed. They should not use algorithmic recommendations to coordinate sellers.
Seller dashboards should avoid real-time competitor-sensitive data unless it is publicly available and legally safe. Aggregated and historical data is generally less risky, but market context matters.
Platforms should also separate their role as marketplace operator from any role as seller. If the platform competes with sellers, the use of non-public seller data may create additional competition risks.
23. How to Respond to a Suspected Hub-and-Spoke Issue
If a company suspects hub-and-spoke conduct, it should act quickly. First, preserve documents. Second, stop any potentially unlawful communication. Third, involve competition counsel. Fourth, conduct an internal investigation. Fifth, identify whether the company acted as hub, spoke or both. Sixth, assess whether sensitive information was exchanged. Seventh, evaluate whether leniency, settlement or full defense is appropriate.
Employees should not delete messages, alter files or contact competitors. If an investigation or dawn raid is possible, the company should prepare its response team and document preservation process.
Early action is essential because hub-and-spoke cases often involve extensive digital evidence.
24. Common Mistakes in Hub-and-Spoke Compliance
The first mistake is assuming that only direct competitor contact matters. Indirect coordination through a supplier, platform or consultant can also violate Article 4.
The second mistake is treating retailer complaints as harmless. Complaints about low prices may become evidence if the supplier uses them to enforce price discipline.
The third mistake is using recommended resale prices as de facto mandatory prices.
The fourth mistake is circulating competitor information internally after receiving it from a hub.
The fifth mistake is ignoring digital tools. Algorithms, dashboards and pricing software can facilitate hub-and-spoke coordination.
The sixth mistake is failing to train sales teams. Hub-and-spoke risks often arise in daily commercial communications, not only in formal contracts.
25. Hub-and-Spoke Compliance Checklist
Companies operating in Turkey should ask:
Do we receive competitor information from suppliers, platforms or consultants?
Do we transmit one customer’s pricing information to another customer?
Do retailers complain to us about other retailers’ discounts?
Do we monitor online prices and pressure resellers?
Do our sales teams tell dealers what other dealers will do?
Do our platform tools reveal seller-specific data?
Do we use a common pricing software provider with competitors?
Do trade association reports include current or future strategic data?
Do we have written policies on indirect information exchange?
Have sales, pricing, e-commerce and HR teams been trained?
Do we have an internal reporting channel for suspicious communications?
If any answer creates concern, the company should conduct a legal review immediately.
Conclusion
Hub-and-spoke cartels under Turkish Competition Law represent a sophisticated form of anti-competitive coordination. They differ from traditional cartels because competitors do not necessarily communicate directly. Instead, a supplier, platform, association, consultant, data provider or other intermediary may act as the hub through which competing undertakings coordinate their market behavior.
Turkish law does not contain a separate statutory category named “hub-and-spoke cartel,” but Article 4 of Law No. 4054 is broad enough to prohibit both direct and indirect anti-competitive coordination. The Turkish Competition Authority has expressly noted that hub-and-spoke arrangements are not separately regulated, but that Law No. 4054 remains the main legal basis for prohibiting cartels, concerted practices and anti-competitive agreements.
Recent Turkish enforcement demonstrates the practical importance of this concept. The FMCG retail investigations showed how common supplier-retailer practices may create hub-and-spoke cartel, information exchange and resale price maintenance risks. The Frito-Lay decision further illustrates how supplier conduct facilitating future price information sharing and retail price coordination may be characterized as hub-and-spoke cartel behavior.
For companies operating in Turkey, the safest strategy is proactive compliance. Suppliers must not become price enforcers between retailers. Retailers must not use suppliers as messengers to coordinate with competitors. Platforms must avoid sharing seller-specific sensitive data. Trade associations and consultants must structure data projects carefully. Algorithms and pricing tools must be reviewed before deployment.
A hub-and-spoke cartel can expose both the hub and the spokes to serious administrative fines, private damages claims and reputational harm. Under Law No. 4054, substantive violations may lead to fines of up to 10% of annual gross revenues, and responsible managers or employees may also face personal exposure.
In Turkey’s active competition enforcement environment, indirect coordination is as dangerous as direct cartel communication. Companies should treat hub-and-spoke risks as a core part of antitrust compliance, especially in retail, e-commerce, FMCG, digital platforms, distribution networks, franchise systems, labor markets and data-driven businesses.
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