European stocks ended Monday essentially flat, as a sharp selloff in technology shares — led by a plunge in chip-equipment giant ASML — offset gains from falling oil prices that boosted airlines and other transport stocks.
The pan-European STOXX 600 index closed little changed, with the tech sector sliding 1.7% after a report that China has begun manufacturing its own immersion deep ultraviolet (DUV) lithography machines, the critical tools used to etch tiny patterns onto semiconductor wafers. ASML, the Dutch company that dominates the global market for these machines, tumbled 8.4%, dragging down peers ASM International and BE Semiconductor Industries.
China's chipmaking ambitions rattle the sector
The trigger for Monday's tech selloff was a report from tech news site The Information, which said China has started producing domestically developed immersion DUV lithography tools. These machines are workhorses of the chip industry, used to create the intricate circuitry on advanced semiconductors. ASML has long held a near-monopoly on this technology, and any sign that China is developing its own capability threatens that dominance.
China has been investing heavily in domestic chip production as part of its push for technological self-sufficiency, especially after US-led export controls restricted its access to advanced chipmaking equipment. The news underscores how geopolitical tensions are reshaping the global semiconductor supply chain. For more on the broader implications, see our coverage of China's domestic DUV lithography push.
The selloff in ASML and other chip stocks weighed heavily on the tech sector, but the broader market held up thanks to gains elsewhere. Energy stocks slid as oil prices fell, but that decline was a boon for airlines, which benefit from lower fuel costs. The drop in oil also helped Latin American markets steady, as the region's economies are sensitive to crude prices.
What it means for investors
For everyday investors, Monday's action highlights how quickly a single piece of news can roil a specific sector, even as the broader market stays calm. The STOXX 600's flat finish masks a sharp divergence: tech stocks suffered, while airlines and other oil-sensitive sectors gained.
The ASML news is a reminder that geopolitical risks remain a key factor for tech investors. China's push to build its own chipmaking tools could erode ASML's long-term growth prospects, though the timeline for any meaningful competition is uncertain. Building advanced lithography machines is extremely complex, and ASML's technology lead is not easily replicated. Still, the market is pricing in the risk that China's efforts could eventually reduce demand for ASML's products.
For investors in European tech stocks, the key takeaway is that the sector remains vulnerable to headlines about chip supply chains and export controls. The broader market, however, found support from falling oil prices, which helped airlines and other transport stocks. Lower fuel costs are a direct boost to airline margins, and the sector has been a bright spot in recent weeks.
Looking ahead, investors will be watching for further details on China's chipmaking progress and any policy responses from Western governments. The UAE stocks edged higher as investors awaited the Fed's next rate decision, and similar caution is likely in Europe as traders weigh the impact of higher-for-longer interest rates on growth stocks.
Overall, Monday's session was a classic example of how sector-specific news can create winners and losers, even when the headline index barely budges. For investors, it's a good time to check whether their portfolios are diversified enough to weather such shifts.


