Market Cap Drops 12 Trillion in a Day… Amphenol Plummets 5%

Amphenol Corp. (Ticker: APH) shares closed at $138.81 on June 5 on the New York Stock Exchange, down 5.42% for the day. Trading volume reached 4.26 million shares. With a market capitalization of approximately $170.8 billion (around KRW 230 trillion), the company saw about $8.8 billion (roughly KRW 12 trillion) wiped out in a single session.

In its Q1 2026 earnings report released at the end of April, Amphenol posted record quarterly results, generating $7.6 billion in revenue (about KRW 10 trillion), a 58% year-over-year increase. In May, it priced roughly €1.1 billion of senior notes, announcing plans to use the proceeds to refinance U.S. commercial paper, repay one-year loans and fund general corporate purposes, thereby strengthening its financial structure.

Amphenol is a global leader in the design and manufacture of electrical, electronic and fiber-optic connectors, cables and interconnect systems, supplying a broad range of end markets including telecommunications, data centers, automotive, industrial, aerospace and defense. Founded in 1932 and headquartered in Wallingford, Connecticut, the company has widened its business portfolio through proactive M&A—particularly in telecom and cable assets—earning a reputation as a premier electronics-components consolidator.