Executives and investors tied to the AI supply chain were among the biggest insider sellers in the second quarter, taking advantage of a sharp — and volatile — rally in technology stocks.

Eight of the top 10 sellers had ties to companies benefitting from artificial intelligence as chip stocks posted their best quarter ever, driven by insatiable demand for AI equipment. The Philadelphia Stock Exchange Semiconductor Index jumped 88% during the three months through June 30, reflecting big gains by such companies as Broadcom Inc., Astera Labs Inc. and Nvidia Corp.

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