Here's The Real Reason Why Broadcom Stock Tumbled Last Week

Broadcom delivered a strong fiscal Q4 2025 beat—revenue +28% year‑over‑year, adjusted EPS +37%, AI semiconductor revenue +74%, an AI-related backlog of roughly $73 billion (about half the company backlog) and management expects AI revenue to more than double in Q1—yet the stock plunged over 11% after the print. Management flagged a modest ~1 percentage‑point sequential gross‑margin decline tied to a higher, lower‑margin AI mix, but the selloff appears driven primarily by valuation concerns: a market cap near $1.6 trillion against consensus fiscal‑2026 revenue of ~$96 billion and adjusted EPS of about $10 (roughly 17x forward sales and >34x forward adjusted earnings). Despite industry‑leading profitability (GAAP operating margin >40%, >50% conversion of revenue to adjusted net income in Q4) and major AI partnerships with OpenAI and Alphabet, the shares remain exposed if AI demand or partner commitments falter, making the current valuation contingent on sustained AI growth.

Analysis

Broadcom reported a strong fiscal Q4 2025 beat with revenue up 28% year‑over‑year, adjusted EPS rising 37%, AI semiconductor revenue up 74%, an AI‑related backlog of about $73 billion (roughly half of total backlog), and management guidance that AI revenue should more than double in Q1 fiscal 2026; despite these operational positives the stock fell more than 11% on the print. Management warned gross margin would decline by roughly one percentage point sequentially as a higher mix of lower‑margin AI revenue ramps, and the company disclosed major AI partnerships including a custom‑chip deal with OpenAI and TPU work with Alphabet. The market cap of approximately $1.6 trillion versus consensus fiscal‑2026 revenue near $96 billion and adjusted EPS of about $10 implies a valuation near 17x forward sales and over 34x forward adjusted earnings, which leaves little room for execution slippage despite GAAP operating margins above 40% and conversion of over half of revenue into adjusted net income in Q4. The price reaction therefore appears driven primarily by valuation risk and uncertainty about the sustainability of AI demand and partner commitments; key near‑term indicators to watch are Q1 AI revenue growth, gross margin trajectory, and the pace at which the $73 billion AI backlog converts to recognized revenue.

Key Decisions for Investors

• Consider reducing or avoiding new long positions until valuation resets or growth visibility improves given the stock trades near 17x forward sales and >34x forward adjusted EPS
• If maintaining exposure, scale in only on confirmation that Q1 AI revenue more than doubles and gross margins stabilize, and monitor backlog conversion and execution on OpenAI/Alphabet deals
• Size positions and/or hedge for tail risk from an AI demand unwind or partner‑deal funding shortfalls by watching gross‑margin trends and any deterioration in backlog realization