Earlier this month, Singapore-based Three Arrows Capital (3AC), a highly levered crypto trading firm with $200 million of exposure to Luna revealed that it was nearly insolvent. Three Arrows’ had borrowed large sums from numerous crypto firms including New Jersey’s Voyager Digital and New York-based BlockFi. In order to survive Three Arrows default, the two digital asset exchanges turned to billionaire Sam Bankman-Fried, founder of FTX and the richest person in crypto, worth some $20.5 billion. Between FTX and his quantitative trading firm Alameda, he provided the companies with $750 million in credit lines.

Bankman Fried has also bought into crypto brokerage Robinhood, where FTX has already accumulated a 7.6% stake, and is rumored to be considering an acquisition.

“There are some third-tier exchanges that are already secretly insolvent,” says Bankman Fried.

Bankman-Fried also has his eye on crypto miners, many of whom leveraged their balance sheet at breakneck pace to quickly scale and take advantage of this 21st century digital gold rush. The stocks of publicly-trading crypto miners including Marathon Digital Holdings and Riot Blockchain are down more than 60% year to date.