Overview
Jane Street trades stocks, bonds, options, and exchange-traded funds with its own money as a market maker, a firm that constantly quotes prices to buy and sell so other investors can trade whenever they want. In 2025, it made more money from trading than JPMorgan Chase or Goldman Sachs, the biggest trading banks on Wall Street. Its traders, researchers, and engineers build computer-driven strategies that trade on exchanges and other venues around the world, and it also trades directly with large institutional clients. It earns the small gap between buying and selling prices across huge volumes, plus gains on positions it holds for minutes to days. Jane Street was founded in 2000 and is based in New York.
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Simplify's Take
What believers are saying
- Records keep falling: trading revenue hit $16.1 billion in the March 2026 quarter, more than double a year earlier.
- Staff share record profits: disclosures in May 2026 showed 2025 pay more than doubled to $9.4 billion, averaging $2.7 million.
- Pay starts high: October 2026 New York postings list a $300,000 base salary for new-grad engineers, traders and researchers.
What critics are saying
- Big bets backfired: Jane Street lost about $15 billion in July 2026 and told staff it would take less risk.
- India's manipulation case drags on: Jane Street's $567 million deposit stayed in escrow as hearings continued in October 2026.
- AI bills are locked in: cloud deals with CoreWeave and Crusoe, from April and September 2026, total about $19 billion.
What makes Jane Street unique
- It runs on a rare programming language: over 500 engineers write OCaml, and its codebase tops 30 million lines.
- ETF issuers depend on it: Jane Street handled nearly a quarter of US-listed ETF share creations and redemptions in 2024.
- It has never taken outside money: Jane Street's own capital grew to $45 billion in 2025.
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