Since the start of 2023, Nvidia 's (NASDAQ: NVDA) stock has gained an astronomical 906% as of the time of writing. It's also right around its all-time high right now, but these two facts may scare some investors off. The common thought is, "Nvidia has risen so much already; how can it increase more?"

Shares of Nvidia ( NVDA -5.29%) were sinking Wednesday. The company's stock fell 6.2% as of 2:20 p.m. ET, but lost as much as 6.9% earlier in the day. The move comes as the S&P 500 ( ^GSPC -0.39%) and Nasdaq Composite ( ^IXIC -0.54%) lost 0.8% and 1.1%, respectively.

Shares of Nvidia ended Thursday up 1% to about $125, but shares spent most of the day in red and briefly dipped below a key technical measure. That could mean more downside ahead.