History Says This Is What Will Happen to Broadcom Stock After Sept. 2

Broadcom’s fiscal Q3 earnings on Sept. 2 are a key near-term catalyst, following a history of declines after past reports—most recently the June quarter dragged the stock down more than 12% the day after release and it is still down over 25% from its all-time high. The sell-off was driven by expectations around AI semiconductor guidance (management reiterated $100B of AI semiconductors revenue for fiscal 2027, which the market wanted to see raised). Ahead of the report, the stock’s forward P/E (~31x) is near the lower end of its recent range, so results/outlook could swing the shares either way depending on whether 2027 AI guidance is raised or held steady.

Analysis

This is less a traditional earnings read-through than a sentiment test on whether AI infrastructure investors still believe upside comes from revisions rather than merely confirmation. With the stock already de-rated, the asymmetry is now about wording: a modestly better 2027 path can re-rate the multiple quickly, but a repeat of prior guidance risks another air pocket because the market has stopped paying for “in line” on mega-cap AI beneficiaries.

The second-order issue is competitive signaling. If AVGO shows stronger custom silicon traction, that reinforces the thesis that hyperscalers are diversifying away from merchant GPUs toward lower-cost ASICs, which is incrementally negative for NVDA’s long-dated multiple even if aggregate AI capex stays strong. Conversely, if AVGO only reiterates, the read-through is not just about AVGO; it would suggest AI spend is broadening more slowly than bulls assume, which could hit the entire AI complex through multiple compression rather than fundamentals.

Time horizon matters: the first move is almost entirely a 1-3 day guidance reaction, but the real catalyst path is 1-3 months as sell-side models reset 2027 revenue and margin assumptions. Over 6-18 months, the key is whether management can show sustained custom design wins translating into backlog and gross margin resilience; if that stalls, the current valuation support disappears and the stock likely trades back toward a market multiple.

The contrarian view is that consensus may be over-focusing on the headline 2027 number and underweighting the slope of bookings and customer concentration. A flat guide is not automatically bearish if the market’s expectations have already reset; the real falsifier is any language implying a slower ramp, weaker conversion of AI design wins, or margin pressure from mix. On the upside, an explicit increase in AI semiconductor revenue guidance would likely matter more than the size of the beat itself.

Key Decisions for Investors

• Own a short-dated AVGO call spread into the Sept. 2 print only if you can get favorable implied volatility; the payoff is strongest if management lifts 2027 AI semiconductor guidance, but the position should be sized as an event trade because a reiteration likely leaves little upside.
• If you want a lower-risk expression, structure a post-print long AVGO / short NVDA pair for 1-3 months only on evidence that AVGO is taking incremental custom-ASIC share from merchant GPUs; the trade works best if AI capex stays robust but mix shifts away from NVDA’s fastest-growing lanes.
• For investors already long AI beta, consider taking partial profits in SMH or SOXX ahead of the print and rotating into names with less multiple dependence on guidance revisions; AVGO has become more of a sentiment catalyst than a pure fundamentals beat story.
• Set a downside alert on AVGO if management does not improve 2027 commentary or signals slower order conversion; that would be the trigger to reduce exposure rather than fade the move immediately, since the first 48 hours can be flow-driven.
• Watch NVDA on any AVGO upside surprise: if AVGO raises custom AI guidance materially, NVDA’s multiple may absorb a modest derating even without any demand slowdown, so the cleaner hedge is smaller AVGO long exposure rather than outright index shorts.