Jane Street barred from Indian markets as regulator freezes $566M

1) buy large volumes of stocks and/or stock futures that are part of an index tracking India’s banking sector, early in the day,

2) subsequently place large options trades, betting that the index would decline or volatility would spike later in the day, and

3) later in the day, cash out of the large long positions, dragging the index lower, making far more money on the options trades than on the long positions.

Jane Street can and likely will claim the firm was only arbitraging away pricing inefficiencies, nothing more, nothing less. It was just business as usual, etc., etc.

However, given the scale of the operation, Jane Street's actions sure look like textbook market manipulation. Calling it like I see it.

If options & futures are more liquid than the underlying, someone will be tempted to nudge the underlying.

Bond ETFs and their options chains seem like another locale where this could happen.

I have the same initial reluctance to believe it that you do, but less so when I remind myself that we live in a world where the Social Security Administration sent out a mass email praising the passing of the "big beautiful bill".

I think our built-up understanding of how the US government functions at a baseline has not caught up to recent events. Especially in regards to how much regulatory bodies are doing their traditional jobs vs being forced to sit on their hands, or in some cases just not even existing anymore.