Super Micro shares are down more than 80% since the company joined the S&P 500 in March. That poor performance could catch the eye of the index committee, an expert said.

Super Micro Computer (NASDAQ: SMCI) stock saw another day of big sell-offs in Thursday's trading. The company's share price closed out the daily session down 11%. Supermicro stock fell today after Cisco made new comments about its plans to move into the artificial intelligence (AI) server market.

Super Micro Computer stock could get delisted soon—and investors who own shares must decide whether to continue holding the stock. Why could Super Micro get delisted? It delayed filing its 10-K for the fiscal year ended June 30,