Ken Griffin of Citadel Advisors has significantly reduced his stake in Nvidia, selling 9.2 million shares worth over $1 billion, which slashed his holdings by 79%, per TMF. This move comes amid a broader trend of Nvidia insiders selling their shares. Nvidia's CEO sold over $26 million worth of shares on September 10th and 11th, with prices ranging from $104.99 to $117.072, and has sold more than $633 million in Nvidia stock since June. Despite the sell-off, Goldman Sachs remains unfazed by the recent sales. Nvidia is currently paused for an earnings blackout.