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EO StudioThis Ex-Quant Had to Quit Wall Street to Build a 24/7 Stock Exchange | QFEX, Annanay Kapila
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At a glance
WHAT IT’S REALLY ABOUT
Ex-quant leaves HFT to build a fair 24/7 exchange
- Kapila argues that high-frequency trading profits largely come from exploiting structural market design flaws rather than creating meaningful societal value.
- He describes the "golden handcuffs" dynamic where elite technical talent stays in quant finance for pay despite intending to leave later.
- He outlines QFEX’s mission to simplify trading by reducing layers of intermediation (broker interface, exchange venue, clearinghouse) and offering transparent, low fees on a level playing field.
- He recounts early startup realities—YC’s push to launch quickly, a near-disastrous internal launch incident, and the operational demands of building a 24/7 always-correct financial system.
- He explains how QFEX raised capital pre-revenue at a $95M valuation by pitching a venture-scale, “zero or huge” outcome and contrasts Silicon Valley’s impact-oriented mindset with London/New York money-status focus.
IDEAS WORTH REMEMBERING
5 ideasHFT often monetizes market design quirks, not innovation.
Kapila frames HFT as systematically capturing transaction costs created by structures like contract expiries and forced rollovers, rather than “making markets efficient” as a primary motivation.
High pay can trap top talent in low-meaning work.
He describes colleagues with exceptional math/engineering credentials staying in trading far longer than planned because compensation makes leaving psychologically and financially hard.
Fixing the system can beat competing within it.
Instead of building faster trading strategies, QFEX aims to redesign the venue so fewer inefficiencies exist to exploit, making outcomes fairer for end investors.
Market fragmentation adds cost and opacity to every trade.
He argues a typical retail trade involves multiple entities (app/broker, exchange, clearing/settlement), and that consolidating and streamlining these functions can reduce friction and fees.
In fintech, “move fast and break things” can be fatal.
The internal launch bug that produced absurd P&L swings underscored that a 24/7 exchange must be correct and resilient under any failure scenario, because trust loss can end the business.
WORDS WORTH SAVING
5 quotesQuant finance has sequestered a lot of very talented people in an industry that basically adds no value to the world, and that was really the source of the guilt. I felt that I was wasting my life.
— Annanay Kapila
No one in quant trading wakes up in the morning and they think, "Oh, how do I make the markets more efficient today? How do I lower cost of consumers every day?" People in trading just wanna make money so they can earn big bonuses.
— Annanay Kapila
You know, this is so obviously, like, a better market design that there's no way it doesn't exist in five or 10 years' time, right? And either the incumbents get their act together, or we do it.
— Annanay Kapila
We looked at everyone's result. Like, somebody was plus $1 million. Somebody was minus $1 million. We're like, "Oh, man. We only gave them, like, $100 to play with. Like, how has this happened?"
— Annanay Kapila
If you're still a young person, you should be optimizing for learning and optimizing for growth, not optimizing for how much money you're making right now.
— Annanay Kapila
SPEAKERS
Annanay Kapila
guestFormer high-frequency trading quant and founder of QFEX, building a 24/7 stock exchange.
High quality AI-generated summary created from speaker-labeled transcript.
