The Philadelphia Semiconductor Index fell 9.2% on Thursday, its worst performance since June. According to Bloomberg, investors are selling securities of chipmakers amid the victory of the Democrats in the elections for the US Congress and the plans of several states to limit the construction of data centers. During trading, Nvidia shares fell 7.5%, posting the biggest intraday drop since April 2025, Advanced Micro Devices shares fell 15%, and Intel fell 9.2%.