This Ex-Quant Had to Quit Wall Street to Build a 24/7 Stock Exchange | QFEX, Annanay Kapila

A Quant Quits Wall Street to Build a 24/7 Exchange

Annanay Kapila spent years at Flow Traders and Tower Research profiting from flaws in market structure, then left to build QFEX, a 24/7 stock exchange meant to strip out the frictions that let high-frequency firms extract money from ordinary investors. The pitch is fee-only pricing with no profit share, and the bet is that better market design is inevitable within five or ten years, whether incumbents or he does it. He raised at close to a $95m valuation before revenue. One botched internal launch taught him what running a system that never closes actually costs.

Takeaways

• High-frequency trading feeds on market design flaws. Kapila says S&P 500 futures expire every three months to match the Midwest harvest, forcing holders to roll contracts and pay costs while HFT firms take the other side. He saw how much his firm made from simple structural flaws, and says nobody in quant wakes up trying to lower costs for investors.
• Kapila quit quant trading over wasted talent. He earned large paychecks but felt he was wasting his life, arguing quant finance sequesters very talented people in an industry that adds no value. Almost nobody he asked expected to still be in the job in five years, yet stayed. Once he had enough money, he left.
• QFEX raised near $95m before revenue. General Catalyst and Nexus Venture Partners backed the exchange at close to a $95m valuation while it was pre-revenue. Y Combinator made an offer the day after the interview, and cofounder Josh left Citadel to build it. Kapila says it makes him $50m or nothing.
• An early internal launch produced fake million-dollar swings. Test users with only $100 to trade showed plus and minus $1m balances. QFEX spent a day reconstructing what happened and reimbursing people, its first loss, then worked around 100 hours a week to make sure a repeat would not end the exchange.
• FTX's products were good, its founder's conduct was not. Kapila calls FTX a very profitable business backed by Sequoia at a high valuation, saying the founder's conduct was fairly wrong and deserved imprisonment while the products were genuinely good. FTX bought a US exchange roughly six months after Kapila had the same idea.
• Small venture checks get decided in 30 minutes. In Silicon Valley, a check under $500,000 typically ends with a decision on the call or just after a half-hour meeting. Kapila contrasts money-obsessed London and New York with impact-focused San Francisco, where he lived for four months.

How QFEX pitches itself

• Pricing is transparent and fee-only, with no profit share taken from users.
• Fees are returned to users who refer friends, making growth a loop rather than paid marketing.