This is truly SHOCKING.

Jane Street's secret trading technique is to accumulate shares, then sell them off in seconds to crash the price and profit from short selling.
They used a similar manipulation algorithm at 10 a.m. in the Indian market and made $4.23 billion, leading to a temporary ban from the Securities and Exchange Board of India (SEBI).
Their simple guidebook is:
1) Have billions of dollars from investors
2) Buy Bitcoin spot at a price, for example, $68,000
3) Open large short positions through options or derivatives
4) Sell a large amount of BTC within minutes using algorithms, combined with low liquidity or negative news to trigger panic selling
5) Price crashes down to $62,000
6) Close short positions to realize huge profits while only losing 5% on the spot price
7) Buy Bitcoin spot again at $62,000, close short positions, and create FOMO (s fear of missing out) to push the price higher
8) Open large short positions once again...
Repeat.
In India, Jane Street still has $560 million frozen in margin accounts at SEBI, and the market manipulation case is still ongoing.