Potamus Trading LLC
A U.S. wholesale market maker providing electronic trading services in NMS equities for other broker-dealer clients.
Last updated September 29, 2026
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Overview
Potamus Trading LLC is a United States-based wholesale market maker that specializes in National Market System (NMS) equities. According to its Wikidata entry, the firm operates as a wholesale market maker for NMS equities and provides electronic trading services to other broker-dealer clients. This places Potamus Trading in the capital-markets segment of the financial-services industry, where it functions as a liquidity provider and trading counterparty rather than as a retail-facing brokerage. The company's business model centers on electronic, automated trading. As a wholesale market maker, it typically streams continuous two-sided quotes in listed U.S. equities and executes orders routed to it by retail brokers, institutional broker-dealers, and other market participants. Its clients are therefore other broker-dealers rather than individual investors, and its revenue is generally derived from the spread between bid and ask prices, exchange rebates, and related trading activity. Potamus Trading is a limited liability company (LLC), a common structure for U.S. trading firms. It is not known to be publicly listed, and no parent company, founder, or founding year is documented in the available evidence. The firm maintains a web presence at potamustrading.com. Note on sources: the official website content currently indexed under potamustrading.com consists of travel and tourism articles about Iran (for example, pages about Zanjan city and the Si O Se Pol Bridge), which do not describe the company's financial business. The authoritative description of the firm's commercial activity comes from its Wikidata entry, which identifies it as a wholesale market maker for NMS equities offering electronic trading services to other broker-dealer clients. This dossier therefore relies on that description for the company's identity and treats the travel content as unrelated to the brand's core business.
History
Potamus Trading LLC is a U.S. wholesale market maker focused on National Market System (NMS) equities. Its documented business is the provision of electronic trading services to other broker-dealer clients, a role typical of wholesale market-making firms that supply liquidity and execution to the broader U.S. equity market. Wholesale market makers in NMS equities sit between retail and institutional order flow and the public exchanges. They continuously quote bid and ask prices in listed stocks and execute orders routed to them by brokers, earning revenue from spreads, exchange rebates, and related trading activity. Potamus Trading's Wikidata entry describes exactly this function: "Wholesale market maker for NMS equities. Electronic trading services for other broker-dealer clients." The firm is organized as a limited liability company, a standard structure for U.S. proprietary trading and market-making businesses. No founding year, founder, headquarters city, parent company, or ownership details are documented in the available evidence, and the company is not known to be publicly listed. Potamus Trading maintains a website at potamustrading.com. The content currently indexed on that domain consists of travel and tourism articles about Iran, including pages on Zanjan city and the Si O Se Pol Bridge, which are unrelated to the firm's financial business. As a result, the company's commercial identity rests on its Wikidata description rather than on the indexed website content. No major corporate events, acquisitions, leadership changes, or public controversies involving the firm are documented in the available sources.
Products and positioning
Wholesale market maker and electronic trading counterparty serving other broker-dealers in U.S. NMS equities.
Wholesale market making in NMS equities
Continuous quoting and execution in National Market System equities as a wholesale counterparty.
Electronic trading services for broker-dealer clients
Electronic execution and trading services provided to other broker-dealers.
Sources4 sources
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