SG Morning Brief | Oil Tumbles as US-Iran Pause Attacks, but China Chip Breakthrough Hammers Semis
Complete. Here is the key summaryUS OvernightThe S&P 500 was flat at 7,413, the Nasdaq fell 0.18% to 24,932, and the Dow gained 263 points (+0.5%) to 52,210. The session was defined by two competing forces. Oil fell sharply — the largest single-day decline since June — after the US and Iran both paused attacks and signaled that negotiations could resume, easing the geopolitical premium that had pushed Brent above $100 last week. That lifted the Dow and energy-sensitive cyclicals.
US Overnight
The S&P 500 was flat at 7,413, the Nasdaq fell 0.18% to 24,932, and the Dow gained 263 points (+0.5%) to 52,210. The session was defined by two competing forces. Oil fell sharply — the largest single-day decline since June — after the US and Iran both paused attacks and signaled that negotiations could resume, easing the geopolitical premium that had pushed Brent above $100 last week. That lifted the Dow and energy-sensitive cyclicals. But a report from The Information that a Chinese state-backed company has begun mass-producing DUV lithography equipment crushed the semiconductor sector. ASML fell over 5% as its near-monopoly on critical chipmaking tools came under threat. ChangXin Memory Technologies simultaneously went public in Shanghai at a valuation near $490 billion, becoming China's most valuable listed company. The SOX plunged as much as 5% intraday before recovering to close down 2%. The Wall Street Journal reported Nvidia is in talks to provide a roughly $250 billion financial guarantee to support OpenAI's planned data center in Ohio, fueling concerns about circular financing within the AI ecosystem.
Key Movers
Nvidia (NVDA) -5% / ASML -5% — Nvidia fell 5% and ASML dropped over 5% as Chinese chipmaking advances threatened the Western semiconductor supply chain's competitive moat. The DUV mass-production report suggests China can now produce near-frontier chips domestically, undermining the export-control thesis that has underpinned ASML's valuation. The $250 billion Nvidia-OpenAI guarantee report added to the selloff by raising questions about AI capex sustainability.
SanDisk (SNDK) -11% / SK Hynix broke IPO price — SanDisk plunged 11% and SK Hynix ADR fell sharply, at one point dropping 10% and breaking below its $149 IPO price for the first time. The memory sector is now caught between two forces: strong AI demand (HBM sold out through 2027) and the CXMT IPO signaling that Chinese competition in DRAM is coming faster than expected.
Chinese ADRs +2.5%: Xiaomi +9% — The Nasdaq Golden Dragon China Index rose 2.5%, with Xiaomi surging nearly 9%, Tencent and Alibaba each gaining over 2%. Chinese tech is the direct beneficiary of domestic chipmaking breakthroughs — lower equipment costs and reduced dependency on Western supply chains improve margins for Chinese OEMs.
SGX Preview
The STI was near 5,070. DBS near S$62.18, UOB near S$37.91. The US-Iran attack pause and 9% oil decline are strongly positive for Singapore's import costs. However, Bloomberg reported that Asian equity futures point to sharp drops in Japan and South Korea as the chip selloff spreads. Venture Corp faces pressure from ASML's decline and the broader semiconductor rout. Tonight's Microsoft earnings are the next major catalyst.
Asia Pre-Market
Nasdaq 100 futures fell 0.2% in early Asian trading. Japan and Korea futures point to sharp declines on the chip selloff. Oil is significantly lower after Monday's sharp decline, easing from last week's $100 peak. The US-Iran pause is fragile — both sides have paused and resumed attacks multiple times since the June MOU.
Today's US Earnings and Economic Calendar
| Event | Time (ET) | Time (UTC+8) |
|---|---|---|
| Consumer Confidence (Jul) | 10:00 AM | 10:00 PM |
| Company | Timing |
|---|---|
| Boeing (BA) | Pre-mkt |
| Coca-Cola (KO) | Pre-mkt |
| PayPal (PYPL) | Pre-mkt |
| Microsoft (MSFT) | Post-mkt |
Wednesday: Meta post-mkt + FOMC decision (2:00 AM UTC+8 Thursday). Thursday: Amazon + Apple post-mkt + Q2 GDP. Friday: Core PCE.
Earnings Spotlight: Microsoft Tonight — The first of the remaining four Mag 7 reports. After Alphabet raised capex to $205 billion and the stock fell 7%, the market will scrutinize Microsoft's Azure AI revenue growth and capex trajectory. A capex raise sends the stock lower. A capex hold with margin improvement would be the most bullish possible signal.
One More Thing
China mass-producing DUV lithography and launching a $490 billion memory company in the same week is not a coincidence. It is a coordinated industrial strategy to break the Western semiconductor chokehold. ASML's 5% drop and Nvidia's 5% drop tell you the market takes the threat seriously. But the irony is that Chinese chip independence is bullish for Chinese ADRs — Xiaomi, Tencent, and Alibaba all rallied precisely because their supply chains are becoming less dependent on Western tools. The AI trade is no longer a US-only story. It is fracturing into two parallel ecosystems, and the market is only beginning to price that in.
This briefing is for informational purposes only and does not constitute investment advice.