NVIDIA shares Friday afternoon dropping almost 4% to their critical 50 day moving average. Shares have seen considerable resistance at the $140.00 price level, which finally broke the stock lower today.

Key Takeaways Nvidia is set to report fourth-quarter results after the market closes Wednesday.The chipmaker is expected to post another quarterly sales record on strong demand for its advanced chips.

Wall Street expects Nvidia's fiscal Q4 adjusted earnings per share (EPS) to surge 62% year over year. The company has exceeded the analyst consensus earnings estimate in 16 of the last 18 quarters, so it seems probable it will do so again on Feb.

There's no doubt that the world's second-most valuable stock is important. But the AI harbinger has taken on a different role of late as other stocks have supplanted the "Magnificent Seven" as the engine of this year's gains.