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Tourmaline Partners is a trading solutions firm providing outsourced, supplemental and customized trading services to asset managers of all sizes. Tourmaline delivers a 24 x 6 buy-side execution offering in global equites, derivatives and ETFs on behalf of hedge funds, mutual funds, RIAs, family offices, sovereign wealth funds and asset owners. Clients include emerging managers at launch to those with AUM over $1T. Tourmaline’s team comprises over 35 traders averaging 15+ years of experience, based in Stamford, CT, London and Sydney. Tourmaline is privately held and positioned to not compete with the sell-side in their core businesses of research, banking and prime brokerage. Tourmaline uniquely funds research through an in-house, proprietary commission management infrastructure including CSAs, CCAs, aggregation as well as attributed trading to meet sell-side research commitments. Founded in 2011, Tourmaline services 350+ institutional clients, trades in 50 global markets, is covered by over 400 sell-side brokers and employs over 45+ algo suites – which allow us to access liquidity at all major exchanges, dark pools, and other off-exchange trading venues globally – on behalf of our clients. Tourmaline’s technology infrastructure is comprised of proprietary tools for order entry, CRM data/analytics, commission management administration and reporting, and industry leading third-party solutions for order handling (OMS/EMS) and TCA. Tourmaline Partners, LLC is registered with the SEC and FINRA. Tourmaline Europe LLP Is a wholly owned subsidiary authorized and regulated by the FCA.

Tourmaline Partners, LLC Questions

The Tourmaline Partners, LLC annual revenue was $6.3 million in 2026.

Aaron Hantman is the CEO, Partner of Tourmaline Partners, LLC.

38 people are employed at Tourmaline Partners, LLC.

Tourmaline Partners, LLC is based in Stamford, Connecticut.

The NAICS codes for Tourmaline Partners, LLC are [52312, 523, 523120, 5231, 52].

The SIC codes for Tourmaline Partners, LLC are [628, 621, 62].

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