Here are the 3 big things we're watching in the stock market this week

The week’s key catalysts are Costco’s Q4 report, Meta Connect, and the Trump-Xi summit, with investors focused on a potential extension of the U.S.-China tariff truce before its Nov. 10 expiry. Costco is expected to report $6.53 in EPS on $94.8 billion in sales, while Bank of America estimates a potential future special dividend of roughly $22 per share. The summit could affect trade, Boeing aircraft orders, AI policy, Taiwan-related semiconductor supply-chain risks, and crude supplies amid the Iran conflict; nearly half of China’s pre-blockade oil imports transited the Strait of Hormuz.

Analysis

COST's earnings setup is less about top-line resilience than whether merchandise-margin expansion can coexist with continued traffic and renewal strength. A special dividend, if announced, is economically neutral after the ex-date but can tighten the near-term float and reinforce the premium-quality multiple; absent a payout, investors may treat it as a modest sentiment disappointment rather than a change in fundamentals. The more consequential 6-18 month read-through is whether value-seeking behavior is broadening enough to pressure conventional grocers and discretionary retail, favoring COST over KR, TGT and select department-store exposure.

META Connect is a valuation test: the market needs evidence that AI improves ad ranking, conversion and creator/developer monetization before incremental infrastructure spending becomes a margin concern. Product demonstrations alone are unlikely to sustain upside after the event; the relevant 1-3 month catalyst is commentary on inference costs, engagement lift and advertiser ROI in the next earnings cycle. A negative asymmetry exists if management emphasizes hardware or frontier-model investment without a measurable monetization timetable, which would reopen the capex-to-EBIT debate and could spill over to AI infrastructure beneficiaries such as NVDA.

The Trump-Xi meeting creates short-dated binary risk across BA, NVDA and the semiconductor complex, but a tariff extension would mostly remove a downside tail rather than create durable earnings upside. BA is the cleaner idiosyncratic beneficiary only if any commercial order is accompanied by credible delivery and certification capacity; otherwise it adds backlog without near-term cash conversion. The underappreciated cross-asset channel is energy: a deterioration in Middle East transit conditions raises Asian input costs and weakens China demand, making a trade détente less supportive for cyclicals than headline interpretation suggests.

Key Decisions for Investors

• Maintain a core long COST only through earnings if renewal rate, gross margin and membership-fee commentary remain intact; avoid buying solely for a special dividend. Add on a post-print pullback of 5-8% if those KPIs hold, with thesis invalidated by renewal deterioration or guidance implying sustained margin compression.
• Use META as an event-risk trade only via defined-risk structures: buy a 1-2 month call spread funded partially with an out-of-the-money put spread after checking implied volatility versus the prior Connect and earnings moves. The long case requires disclosed ad-product adoption or measurable engagement/conversion benefits; reduce if capex rises without a corresponding revenue or efficiency framework.
• Express summit uncertainty with a small BA/NVDA hedge pair rather than directional semiconductor beta: long BA only on verifiable order/delivery terms, paired with a short-dated NVDA put spread or SOXX hedge into the meeting. Exit the hedge on a formal tariff extension; abandon BA upside if no delivery-relevant commitment emerges.
• Do not add broad China-cyclical exposure on diplomatic headlines alone. Monitor Brent and Asian refining margins over the next 1-3 months: sustained energy stress would favor XLE over China-sensitive industrial and consumer cyclicals, while a normalization in transit risk would remove that relative-value signal.