
Big money. Fast trades. And one regulator that refused to blink.
On July 4, SEBI dropped a bombshell interim order against Jane Street, a global quant trading firm, accusing it of manipulating Indian markets using its local entity, JSI Investments Pvt Ltd, to dodge rules that foreign players must follow.

The Setup: Outsmarting the Rulebook
India’s FPI rules are clear: foreign investors cannot do intraday trades. But Jane Street allegedly found a way around that.
According to SEBI, on January 17, 2024, Jane Street pulled off a two-part strategy:
- In the morning (Patch I), it aggressively bought shares and futures of Bank Nifty stocks.
- In the afternoon (Patch II), it sold them all back, dragging prices down.
SEBI says this wasn’t just trading. It was market control—buying to inflate the index, selling to crash it, and cashing in through options trades on the side.
While Jane Street booked a ₹61.6 crore loss in regular trades, it made big money from options—where it had bet on the very volatility it created.
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The Conflict: India’s Markets vs Foreign Muscle
Here’s the core issue: the same-day buying and selling was illegal under the SEBI FPI Regulations, 2019. FPIs are supposed to settle trades, not reverse them in one day.
SEBI says Jane Street knew what it was doing. And it used its India-based arm to skirt the law. This wasn’t random. It was planned.
As SEBI notes, this was a classic case of “marking-the-close”—a way of moving the market near expiry to favour options positions. It’s a playbook move for big traders, but one that’s now under a harsh spotlight.
The Fallout: ₹15,000 Crore on the Line
SEBI has only issued an interim cease-and-desist order. But more action is expected. The regulator is looking to recover $560 million in alleged illegal profits.
Jane Street reportedly has ₹15,000 crore in margin money parked in Indian government bonds. SEBI may tap into it.
Market watchers are praising SEBI’s bold stance.
“The data crunching SEBI has done is very impressive,” said veteran trader Santosh Pasi.
“This is manipulation, plain and simple,” added market expert Samir Arora.
This moment could set the tone for India’s message to global investors: Play fair, or face the heat.
The Bigger Picture: Why This Matters
This isn’t just about Jane Street.
It’s about how far big players might go to exploit local loopholes, and how far India is now willing to go to protect market integrity. In a time when foreign capital is watching, SEBI just sent a clear message: India is not a playground for profit tricks.
For everyday traders and investors who follow the rules, this case is a reminder that regulators are watching—and acting.
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