London Metal Exchange lawsuit In June 2022, Jane Street and
Elliott Investment Management sued the
London Metal Exchange for cancelling US$4 billion in nickel trades during a period of high volatility. The case was dismissed by the
High Court of Justice in November 2023, and an appeal to the dismissal was rejected in October 2024. The
Financial Conduct Authority later fined the London Metal Exchange in March 2025 for mishandling the excessive volatility.
Millennium Management lawsuit Jane Street filed suit against two former Jane Street employees at
Millennium Management, accusing them of stealing trade secrets, primarily of its Indian market operations. The suit was settled in December 2024 for an undisclosed amount. On July 14th, 2025, Jane Street put $560 million into an
escrow account as part of a request to the
Securities Appellate Tribunal (SAT) to resume trading activities. SEBI alleged that Jane Street used one entity to acquire substantial quantities of bank stocks at market open, increasing the value of the Bank Nifty index, while a separate entity simultaneously held
derivatives that would benefit from a later decline in that index. Near the expiry of the derivatives, the bank stocks were allegedly sold by Jane Street, causing a decline in the Bank Nifty and generating profits from the derivatives. Jane Street denied all wrongdoing, stating it was basic
index arbitrage. In September 2025, Jane Street filed an appeal to request more documents related to a continued investigation by SAT, which was later denied in November 2025.
Connections to South Sudan coup attempt Jane Street faced scrutiny in June 2025 over its co-founder,
Robert Granieri, facing allegations of funding an attempted coup against the government of
South Sudan by
Peter Ajak and Abraham Keech. The matter was resolved with no charges being brought against Granieri.
Terraform lawsuit In February 2026, the post-bankruptcy manager of
Terraform Labs filed a lawsuit in the
United States District Court for the Southern District of New York alleging that Jane Street had
"abused market relationships to rig the market in its favor" in destabilizing trades that ultimately led to Terraform Labs' bankruptcy in 2022. Jane Street denied wrongdoing and filed a motion to dismiss the lawsuit in April 2026. == Notable past employees ==