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.

Wondering where Super Micro Computer’s stock is heading? It might be helpful to look at the shares’ journey to this moment.The stock market tends to have a short memory, focusing more on the future than the past.

Super Micro Computer shares continued sliding in extended trading after leading Nasdaq decliners on Wednesday following news that the embattled server maker would delay the filing of its quarterly results.