Storage Sector Defies Broader Weakness, Lumentum Guidance Beats Expectations, Today’s U.S. CPI Takes Center Stage | WEEX TradFi Daily Brief (Aug. 12, 2026)

1 Stock Highlights

1）Lumentum Posts Strong Earnings and Raises Guidance as AI Optical Demand Continues to Materialize

Lumentum (LITE) reported fiscal Q4 revenue of approximately $1.01 billion after the close on Aug. 11, marking substantial year-over-year growth, with non-GAAP gross margin and operating margin both rising significantly. The company issued robust next-quarter revenue guidance of $1.225–1.275 billion, driven primarily by AI data-center optical modules and CPO orders. Investors will focus on delivery execution and further margin expansion.

Watchlist: LITE
Spot: LITEB
Futures: LITE

2）Storage Sector Leads Gains; SK Hynix Rallies on Restart of Capacity Expansion

Storage-related names advanced against the broader market, led by SK Hynix, with SanDisk and Seagate also rising in tandem. SK Hynix restarted construction of its NAND flash Phase II facility in Dalian, aiming to increase local capacity by roughly half. Rigid AI-server demand for high-bandwidth and high-capacity storage, combined with supply-side expansion signals, drove capital back into the storage chain.

Watchlist: SKHY, SNDK, STX
Spot: SKHYB SNDKB STXON
Futures: SKHY STX

3）SpaceX Shares Pull Back as Profit-Taking Emerges After Lock-Up

SpaceX (SPCX) closed lower. Following the earlier lock-up expiration, the stock had posted substantial consecutive gains, prompting investors to take profits. The long-term thesis around AI compute and Starlink remains intact, but near-term volatility has increased.

Watchlist: SPCX
Spot: SPCXB
Futures: SPCX

4）July CPI Due at 08:30 ET on Aug. 12; Key Variable for Rate Expectations and Risk Appetite

The July CPI will be released at 20:30 (UTC+8). Market consensus points to core CPI rising about 0.2% month over month, with the year-over-year rate potentially easing toward 2.5%. A hotter-than-expected print could reinforce tightening concerns and pressure risk assets; an in-line or softer reading would help stabilize sentiment. Combined with ongoing Hormuz Strait negotiation uncertainty affecting oil prices, liquidity conditions and sector rotation are likely to be significantly influenced.

Watchlist: SPY, QQQ
Spot: SPYB QQQB
Futures: SPY QQQ

2 U.S. Earnings Preview

Cisco, Cerebras Systems, and Coherent are scheduled to report after the U.S. market close on Aug. 12. Key areas to watch include:

1）Cisco Systems (CSCO)

Focus on enterprise AI agent initiatives and revenue growth, with particular attention to AI infrastructure and cybersecurity performance as well as full-year guidance.

Watchlist: CSCO
Spot: CSCOON
Futures: CSCO

2）Cerebras Systems (CBRS)

A high-profile AI chip unicorn. Key focus areas include wafer-scale engine shipments, cloud inference revenue, and progress with major customers.

Watchlist: CBRS
Spot: CBRSON
Futures: CBRS

3）Coherent (COHR)

A leading photonics and semiconductor company. Focus areas include AI optical communications and laser business growth, margin expansion, and next-quarter guidance.

Watchlist: COHR
Spot: COHRON
Futures: COHR
 

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