Nvidia shares have experienced a significant decline, falling 6% and dropping below a $3 trillion market cap. Since its high last month, Nvidia has lost about $450 billion in market value. The stock is now down more than 5% in early trading and has erased over $170 billion in market cap today. The sell-off has been part of a broader tech sector decline, with the Nasdaq sliding 2% and losing over 400 points. Nvidia's stock price has been volatile, breaking key support levels, including $127, and trading as low as $119.49. Shares recently fell 2% to $125.8.