On July 16, Marvell Technology fell 3.24% in regular trading, trading at $194.57/share, with turnover of $871 million. The stock came under dual pressure from a broad semiconductor sector selloff and regulatory shockwaves from South Korea targeting the storage chip supply chain.

On the news front, South Korea's Financial Services Commission, jointly with the Ministry of Finance and the Bank of Korea, announced tightened regulations on single-stock leveraged ETFs, including raising the minimum margin requirement from 10 million KRW to 30 million KRW and banning new single-stock leveraged product listings. The measures precisely targeted speculative capital active in the storage chip sector, triggering a crash in SK Hynix of over 11% and Samsung Electronics of over 8% in Asian trading, with the impact cascading into US semiconductor and storage stocks.

The broader US semiconductor sector opened sharply lower, with ARM falling over 6%, AMD, Broadcom, Qualcomm, and Intel each declining over 3%, and TSMC dropping over 2%. Marvell Technology, as a key player in the semiconductor supply chain with exposure to data center and storage connectivity, was weighed down by both sector-wide profit-taking sentiment and the storage-specific regulatory shock.

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