Can a Hedge Fund Stop a Quant or Trader Joining a Rival?
A new role can look perfect. Then compliance finds the non-compete. A hedge fund can sometimes stop a quant, trader, portfolio manager or developer joining a rival—but the heading does not decide the result.
In England and Wales, the employer must show that the restriction protects a legitimate business interest and goes no further than reasonably necessary. Preventing ordinary competition is not enough.
Upload the contract, covenant schedule and award terms to Caira. Its AI-powered document tool uses a knowledge base containing legal documents for England and Wales and can help organise restrictions that may overlap.
Which restriction are you reading?
Finance contracts contain several distinct restraints.
Term | What it may restrict |
|---|---|
Non-compete | Working for, funding or establishing a competitor |
Garden leave | Working elsewhere during paid notice while employment continues |
Non-solicitation | Approaching defined clients, investors or colleagues |
Non-dealing | Doing business with them even if they approach you first |
Confidentiality | Using or disclosing protected information |
IP clause | Ownership of code, models, research and inventions created through the job |
Bonus or equity terms | Deferred awards that may lapse or be reclaimed after a competing move |
“Restricted Business” might cover your desk—or every group business. “Capacity” may include employee, consultant, partner, shareholder or founder. The wording matters.
Is twelve months always excessive?
No. Nor is it automatically valid.
In Dare International Ltd v Soliman and Hikmet [2025], energy-derivatives traders left proprietary trader Dare for rival Onyx. A 12-month non-compete could protect long-lived confidential information. One trader was restrained; Dare already had equivalent protection against the other.
In Square Global Ltd v Leonard [2020], an inter-dealer brokerage enforced six months’ notice followed by a six-month non-compete. Portable information and customer connections mattered.
But in Quilter Private Client Advisers Ltd v Falconer [2020], a wealth adviser’s restrictions failed. Its non-compete reached new clients with no Quilter connection when narrower protection could suffice.
Jump Trading International Ltd v Couture [2023] involved Jump Trading, a quantitative and algorithmic trading firm, and a researcher due to join Verition, a global hedge fund. The reported decisions concerned interim procedure and a speedy trial, not a final ruling that the covenant was valid.
Can you target completely new investors or clients?
Possibly. Start with the clause.
A non-solicitation clause normally covers defined investors or prospects from a look-back period. A genuinely new investor may fall outside it.
A non-dealing clause may catch business even when the investor approaches first. A non-compete can prohibit the competing service regardless of whose clients you target.
Caira can help place the “Restricted Client” definition beside the operative clause and garden-leave deduction. That makes it easier to check how the documents describe existing clients, prospects and new investors.
What if former colleagues apply to your new fund?
There is no single “anti-poaching law”. Check separate clauses covering solicitation, employment or engagement. An unsolicited application may answer a solicitation allegation, yet a non-employment clause could still catch the hire.
An independent application is not automatically unlawful, but encouragement can become solicitation. Coordinating resignations, using a recruiter as an intermediary or assembling a team while employed can also breach the duty of fidelity. Keep recruitment open and preserve the first unsolicited contact.
What about algorithms, code and remembered ideas?
An unenforceable non-compete is not permission to take code, notebooks, datasets, signals or model parameters.
Copyright in code written in the course of employment ordinarily belongs first to the employer, unless agreed otherwise. Employee inventions are treated separately under sections 39–42 of the Patents Act 1977. Database rights and the Trade Secrets (Enforcement, etc.) Regulations 2018 may also matter.
That issue can arise before a startup launches. Building a model at night or on a personal laptop does not decide ownership. Duties, contract wording, timing, source material and use of the fund’s systems matter. Later work is not automatically the fund’s, but protected material remains protected.
Faccenda Chicken Ltd v Fowler [1987], involving a poultry business, distinguishes trade secrets from general skill and knowledge. Python expertise and public research are not automatically the fund’s property. Copying a private library is different.
Rewriting from memory does not settle whether confidential logic was used. Personal repositories and cloud backups can become evidence.
Check the money separately
Deferred bonuses, carried interest and equity awards may have separate “bad leaver” definitions. Losing an award differs from being stopped from working. Repayment terms may also be restraints.
Ask for the employer’s position in writing. Keep the contract, amendments, award rules and garden-leave notice together. Caira is free to try, with paid access at £15 a month. It can help create a clause-and-date list to check. If American documents appear, read our US-employer guide.
Three questions you may feel silly asking
Can I just delete the files now?
Deletion may remove evidence once a dispute is foreseeable. Stop using the material and record what exists and where it came from.
What if the investor contacts me first?
That may help under non-solicitation. It may not help under non-dealing or a non-compete. Save the original approach.
Can I call myself a researcher instead of a trader?
Probably not if the actual work remains restricted. Courts examine substance: duties, markets, information and competitive activity—not the label on the new role.
This article is general information, not financial, legal, tax, or medical advice.
