Nvidia's stock, $NVDA, experienced significant volatility, fluctuating from a 6% loss to a 3% gain and then a 2% loss within hours before markets opened. Despite this, Nvidia remains a key player, accounting for one-third of the S&P 500 gains in 2024. The stock saw various movements, including erasing losses, premarket trade declines, and a bounce back. Nvidia's performance has attracted significant attention, with large call orders and record flows into related ETFs. The company's market value has soared, leading to discussions about a potential bubble.