SEBI Cracks Down on Jane Street Over Index Manipulation

SEBI Cracks Down on Jane Street Over Index Manipulation

In an unprecedented move, India’s market regulator SEBI has barred Jane Street, a leading U.S. trading firm, from accessing its securities market, citing manipulation of stock indices via derivatives.

What Happened?

  • SEBI’s investigation found that Jane Street and its Indian entities manipulated the Bank Nifty index through large and coordinated trades in cash and derivatives markets.
  • The firm allegedly propped up the index in the morning and tanked it later, profiting off massive short positions in options.
  • SEBI called this “egregious manipulation” aimed at deceiving smaller traders and artificially moving markets.

Major Penalty

  • ₹48.4 billion ($567 million) seized — the largest-ever impoundment in Indian markets.
  • Jane Street has been asked to deposit the funds in an escrow account, with no withdrawals allowed without SEBI’s nod.

Market Ban

  • Jane Street and related entities are prohibited from trading in Indian securities until further notice.
  • The firm has 21 days to respond and may appeal to the Securities Appellate Tribunal.

Jane Street’s Response

“We dispute SEBI’s findings and will engage further with the regulator,”
Jane Street spokesperson

Why It Matters

  • India hosts the world’s largest equity derivatives market, and global players like Citadel, Optiver, and Millennium are expanding their presence.
  • SEBI’s action signals strict enforcement, especially as global firms flock to India.
  • However, market impact is expected to be limited. SEBI timed the action post-derivatives expiry to avoid disruption.

 Analyst Insight

“This is a targeted move, not a blanket statement against foreign investors,” said Deven Choksey of DRChoksey FinServ.

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