Crypto trader CBB has increased his short position in Nvidia's virtualized contract (NVDA) to $18.6 million, according to Coinbob monitoring. This move solidifies his status as the largest short seller of Nvidia on the blockchain. The average price of his position is $188, with an unrealized profit of $1.25 million. In addition to Nvidia, CBB is shorting a basket of AI-related stocks, including MU and SNDK, with total holdings reaching $30 million. CBB, known for his high-frequency trading on Hyperliquid, has a significant following on the X social platform, where he gained fame for targeting BTC short whales in 2005.