#股票交易分享挑战 Pre-Market Flash丨What Did Overnight U.S. Stocks Signal?
Combined with major overnight global news and the previous U.S. market close, A-shares face a stark contrast between ice and fire today. Resource stocks—oil, gold, and nonferrous metals—are highly likely to open sharply higher and surge, while technology stocks, especially optical communications and AI hardware, will face significant correction pressure. The storage sector is still undergoing divergence verification.
I. Analysis of Sector Impact on August 11
1. Major positive catalysts for the resource sector, today’s strongest theme
（1）News
①Crude oil surges WTI crude rose 5.1% to $82.13, while Brent crude rose 5%. There are two reasons: first, geopolitical risks, as no agreement has been reached on the Strait of Hormuz; second, the U.S. Strategic Petroleum Reserve has fallen to its lowest inventory level since 1983.
②Precious metals surge Spot gold approached $4,400/ounce, up +1.1%, while spot silver surged 3.57%. Copper prices continued to rise, with LME copper futures up 0.6%, extending their gains for six consecutive weeks.
（2）Impact on A-shares
They will open sharply higher directly, and may even trigger a wave of limit-up stocks.
①Oil exploration/oilfield services PetroChina, CNOOC, COSL, and others are highly likely to open sharply higher.
②Gold/nonferrous metals Shandong Gold, Zhongjin Gold, Zijin Mining, Baiyin Nonferrous, and others will benefit directly. Silver-related stocks in particular may have greater elasticity than gold stocks.
③Shipping and ports Due to risks in the Strait of Hormuz and surging freight costs, the cost of chartering a very large crude carrier is nearing $500k per day. Ocean transportation stocks such as COSCO Shipping Energy and a certain China Merchants shipping company may also attract capital.
2. Major negative catalysts for AI and optical communications; risks should be avoided.
（1）News
①Optical communications plunge Coherent fell more than 14% in U.S. trading, while Lumentum fell more than 8%.
②Nvidia fundraising Although Nvidia’s proposed $500 billion fundraising for AI computing power is a long-term positive, it may be interpreted as liquidity extraction or high-level expansion in the short term. Combined with the sharp decline in the U.S. optical communications sector, this indicates that the market is beginning to diverge over the high valuations of AI hardware.
（2）Impact on A-shares A sharp lower open and waning sentiment.
①Optical modules/CPO stocks that had previously posted huge gains, such as InnoLight, Eoptolink, and TFC, face significant catch-up decline pressure today. This is today’s major pitfall; do not rush to bottom-fish at the open.
②AI computing power stocks such as Foxconn Industrial Internet and Inspur Digital will also be dragged down by sentiment.
3. The storage sector is neutral to moderately positive; wait for confirmation of a transition from weak to strong.（1）News Overnight, U.S. storage stocks moved in different directions, with SanDisk rising more than 2%, while SK hynix and Seagate Technology fell more than 1%.”
（2）Impact on A-shares Divergence is expected; watch GigaDevice’s performance. There is internal divergence in the storage sector. Declines in Micron and SK hynix will put downward pressure on the market at the open, while SanDisk’s rise will provide support. If GigaDevice or Longsys can withstand the overall panic in technology stocks caused by the decline in optical communications, and instead turn positive or hold flat without falling, the logic for an independent storage-sector move will be confirmed, and capital may flow back in during the afternoon.
II. Analysis of Trading Strategies for August 11
1. Cut the weak and retain the strong; switch sectors
If you hold stocks related to optical modules or CPO, any rebound at the open may be an opportunity to reduce positions, as the U.S. declines were relatively deep and momentum is strong.
2. Focus on resource-stock themes Oil, gold, and nonferrous metals are highly likely to open sharply higher. Avoid chasing rallies. If they rise directly by more than 5% at the open, do not rush in, to avoid a surge followed by a pullback as the positive news is priced in. If you hold related stocks at low levels, you may keep an eye on them.
3. Test whether storage stocks can withstand the test
Keep a close eye on GigaDevice. If it plunges along with optical modules, this means the storage-sector logic has not yet solidified, so wait and see. If optical modules plunge while it trades steadily in positive territory, that will be a very strong signal. Consider trying to enter when it stabilizes during the session and speculate on the next sector rotation.
III. Summary
Today is a day for old energy (oil and gold) to counterattack, while new technology (optical modules and AI) pays back its gains. The storage sector is caught in between; we need to see which one can first break out into an independent move.
$SNDK
