On October 12, FormFactor fell 5.48% in regular trading, trading at $131.785 per share, with turnover of $6.7073 million.
The decline came as the semiconductor equipment sector weakened broadly, with ASML, Applied Materials, KLA, and Lam Research all posting losses. Sector-wide linkage amplified short-term selling pressure on FormFactor, as the stock gave back gains that had been fueled by expectations of its inclusion in the S&P MidCap 400 index.
The company had previously announced it would join the S&P MidCap 400 effective before the opening of trading on October 6, replacing Twilio. Index inclusion often generates passive fund inflows, which had supported the stock. FormFactor is scheduled to report fiscal third quarter results on October 28.
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