Noteworthy Tuesday Option Activity: AMD, ALMS, ETSY

Alumis (ALMS) saw 16,482 option contracts trade today (~1.6M underlying shares), equal to about 133.2% of its one‑month average daily volume, with notable put activity at the $15 strike expiring Jan 16, 2026 (2,068 contracts, ~206.8k shares). Etsy (ETSY) registered 37,563 option contracts (~3.8M shares), or ~121.8% of its one‑month average, driven by heavy put volume at the $60 strike expiring Mar 20, 2026 (10,802 contracts, ~1.1M shares). The concentrated put flows suggest significant bearish/options positioning and could influence intraday liquidity and directional pressure on the individual equities.

Analysis

Market structure: Concentrated put flow in ALMS (Jan 16, 2026 $15) and ETSY (Mar 20, 2026 $60) — volumes equal to ~134% and ~122% of ADV respectively — signal either directional bearish bets or large hedges by institutions. The immediate mechanical effect is elevated put skew and higher implied volatility for those tickers, which forces dealers to short-delta hedge (selling underlying) and can create downward pressure over days to weeks. Macro cross‑asset impact is muted; expect localized equity selling and a small lift in equity risk premia (0–20bp), negligible direct moves in FX, rates or commodities unless positioning cascades into broader risk-off.

Risk assessment: Tail risks are company‑specific (earnings misses, platform regulatory scrutiny for ETSY, supply disruptions or contract loss for ALMS) that could amplify put-holder payoffs; systemic tail risk is low. Short horizon (days–weeks): delta‑hedging may drive stock weakness and IV spikes; medium horizon (1–6 months): realized moves hinge on earnings and consumer data; long horizon (>6–12 months): fundamentals reassert, so expensive insurance tends to decay. Hidden dependencies include that large reported volumes can be multi‑leg strategies (collars, verticals, structured product hedges) — don't assume naked put risk without checking block trade prints and OI changes.

Trade implications: Prefer defined‑risk option structures. For ETSY, where 1.1M shares were in $60 Mar26 puts, a Mar20 2026 $60/$50 bear‑put debit spread (size = 1–2% portfolio risk, max loss ≤0.2% portfolio) captures downside while limiting IV spend; liquidate 30–45 days before expiry or on ≥30% profit. For ALMS, consider buying the Jan16 2026 $15 put or better a $15/$12 put spread (smaller notional: 0.5–1% portfolio) to capitalize on heightened skew while avoiding assignment; alternatively short very front‑month call premium only if you have underlying exposure.

Key Decisions for Investors

• Establish a defined‑risk bearish position in ETSY: buy Mar20 2026 $60/$50 bear‑put spread sized to 1.0–1.5% of portfolio (max loss = premium paid). Enter within next 5 trading days to capture elevated IV; exit 30–45 days before expiry or on a 30–50% profit.
• Establish a tactical hedge on ALMS: buy Jan16 2026 $15/$12 put spread sized to 0.5–1.0% of portfolio (limit one‑day delta exposure to <0.25% portfolio). If traded volume/prints show single large buyer of naked puts, increase hedge to 1.5% and monitor for subsequent OI declines.
• If you hold long ETSY or ALMS stock, convert to collars for protection: buy the puts specified above and finance with ~30–50% of premium via selling 60–120 day OTM calls up to a cap that limits upside to +8–12% annualized. Reassess after earnings or any material guidance change within 30 days.
• If no fundamental catalyst appears within 7–14 days and IV remains >30% above 60‑day mean, consider selling short‑dated calendar/credit spreads against ETSY/ALMS to harvest mean‑reversion (size ≤1% portfolio risk per ticker).
• Monitor trade tape and OCC block prints daily for next 3–7 days; if >70% of put volume is tied to a single account or shows complex multi‑leg flow, reduce directional exposure by 50% and wait for clarification before adding risk.