A few days ago, FTX co-founder Sam Bankman Fried saw his wealth plummet by over 90% worth $1 billion.

The significant drop came after a liquidity crisis devastated FTX and the cryptocurrency market. First rival binance agreed to purchase However, FTX.com ultimately backed out of the deal.

FTX, including the FTX.us segment, has since filed for bankruptcy and further depleted Bankman-Fried’s fortune.

Related link: Crypto’s White Knight Needs A White Knight – Could FTX/CZ Drama Be Sam Bankman-Fried’s Downfall?

Bankman-Fried’s net worth was around $1 billion based on his 70 percent stake in the FTX.us business, which was valued at $8 billion in January.

He also invested Robinhood Markets HOOD earlier this year. The investment was made by Alameda Researchwhich also filed for bankruptcy on Friday.

This gives the bet a value of $0, Bloomberg reported.

Before the collapse of FTX, Bankman-Fried had an estimated fortune of $15.6 billion and was ranked the 95th richest person in the world. At its peak, Bloomberg valued Bankman-Fried at $26 billion in March.

There could be assets owned by Bankman-Fried that are not represented by the Index, including potential cash and real estate.

The big question mark will likely be whether the investments were made by Bankman-Fried itself or through one of the entities like FTX or Alameda Research, which are now valued at $0.

A drop from $16 billion to $1 billion and now to $0 marks one of the largest wealth wipes in history. With 94% of his wealth disappearing in a single day, it marked the largest one-day loss (percentage) of his wealth in the history of the Bloomberg billionaire rankings.

See also: Billionaire Mike Novogratz Scores Another Hit – First Luna, Now FTX?

binance chairman Changpeng Zhaowho may have helped causing the FTX token to lose valuewas ranked No. 75 by Bloomberg billionaires on Monday with a net worth of $18.3 billion index.

As of Friday, Zhao is worth $16.4 billion, ranking 88th.