Jane Street

What is Jane Street?

Jane Street is a global liquidity provider and trading firm founded in 2000, with over 20 years of experience using sophisticated quantitative analysis and a deep understanding of market mechanics to help keep prices consistent and reliable. The firm is built on three pillars: Trading, Research, and Technology. Jane Street trades continuously on more than 200 electronic exchanges and is one of the world's largest market makers. The firm is NOT a retail prop firm — it's an institutional proprietary trading firm and market maker that trades with its own capital across global financial markets.

Is Jane Street a prop trading firm?

Jane Street is an institutional proprietary trading firm, but NOT a retail prop firm. It does NOT offer evaluation challenges, funded accounts, profit splits, or account sizes to individual retail traders. Instead, Jane Street is a global market maker and liquidity provider that trades with its own capital across equities, bonds, options, ETFs, and crypto markets. If you're an individual trader looking for a funded account, Jane Street is not the right fit.

What does Jane Street do?

Jane Street is a global liquidity provider and trading firm that uses sophisticated quantitative analysis and a deep understanding of market mechanics to keep prices consistent and reliable. The firm trades on 200+ electronic exchanges, making it one of the world's largest market makers. Jane Street is known for ETF expertise but is also a major player in Equities, Bonds, Options, and crypto markets. The firm blends human intuition with cutting-edge research, using machine learning, domain expertise, and mathematics.

Is Jane Street involved in crypto?

Yes. Jane Street is actively involved in crypto markets as a primary Authorized Participant (AP) and market maker for multiple U.S. spot Bitcoin ETFs, including BlackRock's ETF. The firm also trades crypto-linked equities, with significant positions in Coinbase (COIN) and Riot Platforms (RIOT). In Q1 2026, Jane Street adjusted its Bitcoin ETF holdings, added Ether funds, and posted a record $16.1 billion in trading revenue. However, crypto is one segment of Jane Street's broader multi-asset trading business.

What is Jane Street's role in Bitcoin ETFs?

Jane Street serves as a primary Authorized Participant (AP) and market maker for multiple U.S. spot Bitcoin ETFs, including BlackRock's ETF. As an AP, Jane Street is responsible for creating and redeeming ETF shares, helping keep ETF prices aligned with the underlying Bitcoin. The firm adjusted its Bitcoin ETF holdings in Q1 2026, reducing exposure while adding Ether funds — suggesting more selective positioning in crypto-related assets rather than a broad exit.

What are Jane Street's crypto positions?

According to Q1 2026 13F filings, Jane Street's crypto positions include: Coinbase (COIN) — ~888,000 shares (~$155M value); Riot Platforms (RIOT) — ~7.4 million shares (~$91M value, up from $63M); reduced exposure to Bitcoin mining stocks (IREN, Cipher Mining, TeraWulf, Core Scientific); and adjusted Bitcoin ETF holdings while adding Ether funds. The firm had increased its Strategy (MSTR) position by 473% in Q4 2025.

What is Jane Street's trading revenue?

Jane Street posted a record $16.1 billion in Q1 2026 trading revenue, according to Reuters. This record performance was driven by volatile markets and gains tied to artificial intelligence-related investments. The firm's massive revenue demonstrates its scale as one of the world's largest market makers and liquidity providers.

What programming language does Jane Street use?

Jane Street builds almost all of its software in-house, including critical trading and risk management systems, using OCaml — a statically typed functional programming language. The firm has used OCaml for twenty years, applying the most advanced tools available to complex problems at market scale. This has given Jane Street a reputation of technical excellence in the trading industry.

Does Jane Street use machine learning?

Yes. Machine learning has been a key part of Jane Street's work from the beginning — the firm has leveraged a variety of modeling techniques since its founding in 2000. The depth of reliance on these models has grown dramatically as the firm adopted more sophisticated techniques. Traders and researchers build models, strategies, and systems that price and trade financial instruments, analyzing large datasets using various ML techniques. Trading serves as a rapid-feedback platform for ML experimentation.

Where are Jane Street's offices?

Jane Street has five global offices: New York (North America — HQ), London (Europe), Hong Kong (Asia-Pacific), Singapore (Asia-Pacific), and Amsterdam (Europe). The firm's global presence allows it to trade continuously on more than 200 electronic exchanges, making it one of the world's largest market makers with around-the-clock market coverage.

What asset classes does Jane Street trade?

Jane Street is a major player across multiple asset classes: ETFs (widely recognized as one of the world's leading ETF liquidity providers, trading both primary and secondary markets), Equities (including crypto-linked equities), Bonds, Options, and Crypto (as an Authorized Participant and market maker for Bitcoin ETFs). The firm originally became known for its expertise in domestic and international ETFs, but its trading has grown significantly since its early days.

How long has Jane Street been in business?

Jane Street was founded in 2000, giving it over 20 years of experience in global financial markets. The firm has grown every year in its team, capital, and global presence. Jane Street's longevity, combined with its reputation for quantitative research and technical excellence, makes it one of the most respected and established proprietary trading firms in the world.

What is Jane Street's culture like?

Jane Street is described as a firm of puzzle solvers on and off the clock. The lines between trading, research, and technology are intentionally porous, both at the organizational and individual level. The firm's tightly integrated teams foster open, collaborative environments. Jane Street's culture is rigorous and pragmatic, combining human intuition with cutting-edge research. The firm stays persistent, humble, and curious, safely navigating volatile markets by taking on challenging trades and complex problems.

What is Jane Street's approach to technology?

Technology is central to everything Jane Street does. The firm builds almost all of its software in-house, including critical trading and risk management systems, using OCaml. Although Jane Street prizes automation, human judgment and insight are critical to how it trades. The firm has invested heavily in sourcing and building tools that provide traders with real-time visibility and insight into trading activity to help guide their decision making.

How does Jane Street make money?

Jane Street makes money through proprietary trading and market making — providing liquidity to global financial markets and earning spreads and trading profits. As a market maker, the firm provides both buy and sell quotes, earning the bid-ask spread while helping keep prices consistent and reliable. The firm trades with its own capital across 200+ electronic exchanges, generating revenue from its quantitative trading strategies and liquidity provision services.