#我的七夕交易分享 The decline has expanded further, with storage and optical communications plunging, adding to pressure on the Aug. 19 morning session
Latest premarket data shows overseas tech losses continuing to widen:
SanDisk SNDK ‑6.04%
- SK hynix SKHY ‑5.50%
- Micron Technology MU ‑4.97%
- Western Digital WDC ‑5.72%
- AXT AXTI ‑7.12%
- Lumentum LITE ‑4.79%
Corning GLW ‑4.31%
- Nvidia NVDA ‑2.03%
- AMD AMD ‑2.87%
Key takeaways
1. The sell-off in the storage sector is intensifying
Micron, SK hynix, Western Digital, and SanDisk have all fallen further. South Korea's KOSPI already saw a roller-coaster session with a 6.13% intraday swing yesterday. Tonight, the U.S. storage supply chain is facing increased selling pressure, directly weighing on A-share storage chip plays (GigaDevice and the ChangXin-related industrial chain), with the sector facing significant pressure to open lower tomorrow morning.
2. Upstream optical communications stocks are also selling off
Lumentum and Corning fell sharply, corresponding to upstream optical components and optical materials for optical modules. The A-share optical module sector already saw billion-level net capital outflows yesterday. With overseas upstream stocks continuing to sell off, optical modules will face pressure at tomorrow's open.
3. AI computing leaders are weakening across the board
Nvidia and AMD are both set to open lower, while high-valuation AI hardware remains
under pressure from elevated U.S. Treasury yields, and risk appetite for global growth assets is retreating. Summary of all external conditions (the pre-market environment for A-shares tomorrow): A-shares closed today with main-force net outflows of 83.1 billion, turnover expanding to 2.42 trillion, and Shanghai outperforming Shenzhen; funds were distributed from high-level tech stocks, while Tianyang New Material hit a full limit-down from limit-up in the short term, showing the emergence of loss effects in high-level themes.
South Korea's KOSPI: The full-day swing was 6.13%, and it fell 1.55% after rallying and retreating, with semiconductors undergoing violent volatility.
U.S. stocks premarket: Losses in storage and optical communications have expanded further, with overseas tech risks continuing to escalate.
Event catalysts: An extremely strong El Niño warning has been issued. Agriculture surged today, so beware of profit-taking on the positive news; water conservancy and flood control, as well as emergency supplies, are low-level event-related sub-sectors that have not yet seen excessive speculation.
The four key points to watch on Aug. 19
Storage and optical modules: Observe the extent of the lower open and whether heavy-volume selling continues or support emerges after selling pressure is released. These are the trend indicators for the tech sector.
Internal divergence between high- and low-level tech stocks: With high-level computing and storage stocks under pressure, focus on whether semiconductor equipment and panels can withstand external pressure; this represents the internal support strength of the tech sector.
Defensive and event-driven themes: Can high-dividend banks stabilize the market? For the El Niño theme, beware of profit-taking on the positive news in agriculture, and observe whether water conservancy and flood control or emergency supplies attract follow-on capital.
Short-term sentiment: Observe whether high-level consecutive limit-up stocks will continue spreading loss effects, and determine whether the short-term downturn is continuing.
Important reminder: The probability of a market-wide collapse is low, but localized risks in high-level growth sectors have already accumulated considerably. The market is still focused on selling high-level stocks and buying low-level ones. Do not blindly buy the dip in high-level popular stocks dragged down by overseas markets today; manage your position size carefully.
Premarket data review; this does not constitute investment advice
$SK Hynix
