Taiwan Semiconductor Manufacturing Co. reported a 67.9 percent year-on-year jump in June revenue on Monday, hours after SK Hynix shares in Seoul closed 15.4 percent lower — the South Korean memory-chip maker's worst single-day fall on record and its first trading session back home following a $26.5 billion Nasdaq debut Friday.

The split between the two Asian chip giants distilled a widening divide inside the artificial-intelligence trade: foundries cutting the leading-edge silicon that trains and runs AI models are running flat out, while investors are second-guessing how much more they will pay for the memory chips that plug into those systems.

By the numbers

TSMC, which counts Nvidia, Apple and Advanced Micro Devices among its clients, posted June revenue of NT$442.68 billion, a 6.2 percent increase from May. First-half 2026 revenue reached NT$2.4 trillion, or $74.99 billion, a 35.6 percent gain over the same period a year earlier. The Taipei-listed shares rose 1 percent Monday. TSMC will report second-quarter earnings Thursday, July 16.

Sravan Kundojjala, an analyst at SemiAnalysis, called the print "quite robust," noting that TSMC's implied second-quarter revenue overshot its own high-end guidance of $40.2 billion and that June sales have declined month-over-month in each of the past four years. "The demand supply situation in AI is still quite tight and TSMC is sold out on N3, which is targeted by all leading AI GPU and CPUs this year," Kundojjala said. He estimated TSMC "is on track to over $40 billion in AI chip revenue in 2026, or close to 25% of its total revenue."

Counterpoint Research puts TSMC's share of the pure-foundry market at 73 percent for the first quarter. Taiwan's National Science and Technology Council Minister Wu Cheng-wen said Sunday that TSMC will add two advanced chip-packaging plants in the Chiayi Science Park in southern Taiwan, Reuters reported.

The Seoul rout

SK Hynix's tumble erased part of a rally that carried the stock into last week's American depositary share offering, the largest U.S. IPO ever by a foreign company. The chipmaker priced 177.9 million ADSs at $149 apiece and rose about 13 percent in Friday's Nasdaq debut. Monday's 15.4 percent slide in Seoul was the largest single-session decline in SK Hynix's history, according to LSEG data.

Daniel Yoo, global strategist at Yuanta Securities, told CNBC's "Squawk Box Asia" that the Korean line now trades at a discount of more than 20 percent to the U.S. ADRs — a wider gap than the roughly 13 to 14 percent premium TSMC's ADRs carry over its Taipei shares. "Everybody's really confused about what's going to happen to the memory demand and where the fair price is," Yoo said, describing the sell-off as partly mechanical: the new share issuance added supply, and Seoul investors booked gains. "The market is taking this as a correctional period for SK Hynix domestically."

Phillip Wool, chief research officer at Rayliant Global Advisors, framed the pullback as position management by fund managers who had accumulated outsized stakes in South Korean and Taiwanese AI chipmakers. "I think it's mostly risk management," Wool said. "Prudent risk management suggests you have to scale those back." The selling, he added, "doesn't really speak to any sort of reduction in the excitement about AI hardware."

What was absent

Partisan viewpoints on the AI-chip trade were not represented in Monday's wire coverage. The center-lean outlets that carried the story framed the moves in valuation and supply-demand terms rather than as a trade-policy or industrial-policy dispute; no left- or right-leaning source treated the divergence as a political story.

Investors will get the next read Thursday, when TSMC reports second-quarter results, and again Tuesday morning, when JPMorgan Chase and Bank of America open U.S. bank earnings against KBW forecasts for a 26 percent jump in industry-wide investment-banking revenue.