Start with the Part You Like
Jane Street says it trades on more than 200 venues, writes most of its software in OCaml and is a major participant in equities, bonds and options as well as ETFs. Those are three different reasons to admire one firm. They lead to three different shortlists.
This guide maps 12 alternatives to the trait they genuinely share: electronic market-making, research-led engineering or structured trader education. It is not a league table and it does not guess acceptance rates. Firm facts and links were checked on 8 September 2026.
For a broad directory use our prop trading firms guide. For a head-to-head employer comparison, use Jane Street, Citadel and Two Sigma. This page answers the narrower search: where else should someone attracted to Jane Street look?
The Jane Street Baseline
Jane Street's official overview describes a global market maker active on more than 200 electronic venues. Its technology page says OCaml is the primary development platform and is used from research code to trading and monitoring systems.
That produces four useful comparison questions:
- Does the firm make markets or run longer-horizon investment strategies?
- Are researchers and engineers central to the trading process?
- Does it publish enough about training or technology to verify the claimed culture?
- Is the role actually available in your city?
Compensation is absent from those questions on purpose. Public job adverts may state base salary for one US role, but bonus, sign-on, desk and location can dominate total pay. No employer supplies a universal graduate package.
Closest on Electronic Market-Making
Hudson River Trading
HRT calls itself a multi-asset quantitative trading firm and liquidity provider. Its current company material says it reaches more than 200 markets and has built its own computing environment for research, modelling and risk management. "Built by coders, led by coders" is the firm's phrase, not our cultural inference.
The resemblance is strongest for candidates who want automated trading and serious systems work. Unlike Jane Street, HRT does not make a public programming-language identity the centre of its pitch. See our HRT interview guide.
Citadel Securities
Citadel Securities publicly describes businesses in equities, options, fixed income and FX. It calls itself the largest provider of equities liquidity and largest US options market maker, but those are company claims, not our cross-firm ranking.
The overlap is product breadth and real-time quantitative trading. Citadel Securities and the Citadel hedge fund are separate firms, a distinction that generic employer lists often blur.
Optiver
Optiver's 2025 results release says the firm was founded in Amsterdam in 1986, has more than 2,000 employees and trades listed derivatives, cash equities, ETFs, bonds and currencies using its own capital. Its public identity is market-making and trader development rather than functional programming.
Optiver is especially relevant if options, pricing and a formal graduate training environment appeal. Our Optiver interview guide covers the current recruitment evidence.
Susquehanna International Group
SIG's quantitative trading page says derivatives are its focus and options its core business. Its use of poker is not recruitment folklore: SIG's decision-science page explicitly says poker teaches decision-making under uncertainty.
Choose SIG for options and game-based decision training, not because somebody on a forum labelled its culture "like Jane Street".
IMC
IMC's current overview reports more than 2,070 employees, 10 offices and activity on more than 120 venues. It describes an integrated research, engineering and trading model across major asset classes.
That puts IMC close on global market-making and cross-disciplinary work. It has its own history and training structure; treating it as a smaller Optiver adds no useful information.
Closest on Engineering and Research
Jump Trading
Jump Trading describes strategies across every asset class and time horizon, built by traders, engineers and researchers. The firm does publish information about its work, although it offers fewer business metrics than a listed company.
The fit is strongest for candidates attracted to infrastructure, low-latency systems and research translated directly into execution. Jump's public site does not establish ownership of particular microwave routes, so network-level claims need a separate authoritative source.
XTX Markets
XTX Markets says it produces machine-learning price forecasts for more than 53,000 instruments, trades $250 billion daily across 35 countries and employs about 300 people. These are first-party figures as of September 2026, valuable precisely because they are dated and attributable.
XTX is a good analogue for machine-learning researchers and systems engineers. It is no longer accurate to describe the firm as predominantly an FX shop: its own product list includes equities, fixed income, currencies, commodities and crypto.
Two Sigma
Two Sigma is the deliberate near-miss on this list. It is an investment manager rather than a broad electronic market maker. The common ground is data-intensive research and engineering.
That difference changes the work. A candidate who wants longer-horizon signal research may prefer it; someone who wants to manage inventory and quote markets may not. See our Two Sigma interview guide.
D. E. Shaw
D. E. Shaw is also an investment firm rather than a like-for-like market maker. It belongs here because research, computation and scientific hiring are central to the organisation's public identity.
Use it as a research alternative, not evidence that every mathematically selective finance employer is the same. Our D. E. Shaw interview guide keeps the recruitment detail separate.
Smaller Firms Worth a Role-Specific Look
Radix Trading
Radix is a smaller Chicago quantitative trading firm. Its appeal is concentrated responsibility and a technical research environment, but private headcount, pay and acceptance-rate claims are not verifiable. Read the live role description rather than extrapolating from firm size.
Akuna Capital
Akuna is an options market maker with offices and roles that vary over time. Calling it a "Python engineering culture" would overgeneralise from selected adverts. Languages are team-specific. Our Akuna interview guide should be checked against the current vacancy.
Five Rings
Five Rings is a private quantitative trading firm with a limited public footprint. It can suit candidates seeking trading, research or software roles in a smaller organisation, but claims about its founding lineage, cohort size and pay need direct evidence that is not public. See our Five Rings guide for what can be supported.
Building an Application List
Build by role first. For options market-making, inspect Optiver, SIG, IMC and Citadel Securities. For automated multi-asset trading and systems, inspect HRT, Jump and XTX. For investment research, inspect Two Sigma and D. E. Shaw.
Then check location and vacancy. Official office lists are not proof that every function hires in every city. A London office may house engineering but no graduate trading intake that year.
Finally, compare evidence. Employer websites are authoritative for current offices, advertised roles and what the firm says about itself. They are marketing sources for culture. Employee anecdotes are useful but unrepresentative. Salary aggregators mix role, year and office.
Use the same evidence sheet for each application: live vacancy, office, product, core decision, required experience, disclosed base range and preparation material. Leave a field blank when the firm does not publish it. A blank is more honest than filling the space with an anonymous forum estimate.
That sheet also prevents category mistakes. A Two Sigma researcher, SIG options trader and HRT systems engineer may all appeal to the same mathematically strong graduate. Their interviews, working days and performance measures are still different. Apply to the role, not to a logo collection.
The right alternative is the firm offering the work, feedback, learning environment and location you wanted from Jane Street for your next role at this stage, with evidence you can verify yourself.
Frequently Asked Questions
Which company is most similar to Jane Street?
HRT is a close match on automated quantitative trading and engineering. Optiver, SIG, IMC and Citadel Securities are closer on market-making and products. There is no objective single winner.
Which alternatives use OCaml?
Jane Street publicly identifies OCaml as its primary platform. Do not assume another firm uses the same language across its stack unless a current official engineering page or vacancy says so.
Which firms are best for options trading?
SIG, Optiver, IMC and Citadel Securities all describe substantial options or derivatives businesses. Compare the actual graduate role and office rather than a generic prestige tier.
Which firms are strongest for machine learning?
XTX publicly describes machine learning as the basis of price forecasts across more than 53,000 instruments. HRT, IMC, Jump and investment managers such as Two Sigma also advertise research and machine-learning work.
Which company pays most?
There is no defensible universal answer. Public ranges usually cover base salary for one jurisdiction, while total compensation varies by role, office, year and performance and is not employer-endorsed by this site.
Is a smaller firm easier to enter?
Not necessarily. Private firms rarely publish applications, interviews and offers, so acceptance-rate comparisons are generally unverifiable. A smaller intake can offset a smaller applicant pool.
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