Notable Thursday Option Activity: NVCR, ABNB, AVTR

Large options flows hit Airbnb and Avantor: ABNB saw 24,766 contracts traded (≈2.5M underlying shares), about 53.9% of its one‑month average daily volume (4.6M), led by 1,635 contracts in the $127 call expiring Feb 13, 2026 (≈163,500 shares). AVTR registered 81,025 contracts (≈8.1M underlying shares), about 53.4% of its one‑month average daily volume (15.2M), driven by 40,136 contracts in the $9 put expiring Feb 20, 2026 (≈4.0M shares). Such concentrated option activity signals sizable directional positioning or hedging that could amplify near‑term volatility and influence trading in the underlying equities.

Analysis

Market structure: The option flows are large enough to move cash prices in the near term — ABNB options = ~2.5M underlying shares (~53.9% of 4.6M ADV) and AVTR = ~8.1M shares (~53.4% of 15.2M ADV). Heavy $127 calls (ABNB Feb 13 2026) imply dealer delta-buying pressure into weeks and months ahead; the 40,136 AVTR $9 puts (Feb 20 2026) imply dealer delta-selling that can accentuate downward moves in AVTR. Cross-asset effects are concentrated: short-term equity flows and equity vols will move, with minimal direct bond/FX impact unless either name triggers broader risk-off.

Risk assessment: Immediate (days) risk is gamma-driven price amplification from dealer hedging; short-term (weeks–months) risk is IV re-pricing if trades are spreads or hedge exits; long-term (quarters+) reverts to fundamentals — ABNB regulatory/local-policy risk (city bans) and AVTR operational/customer-concentration or funding/liquidity risk. Tail scenarios: a large institutional block unwind or discovery that AVTR trades were part of structured hedges could cause >20% moves; counterparty/flow reversals are second-order risks.

Trade implications: For ABNB prefer directional exposure via buy-call-spread to contain cost and vega (e.g., Feb 2026 120/140 call spread) or a 1–2% long equity position to capture delta-hedge lift; trim on a +10% move or if IV rises >25% from today. For AVTR favor bearish put-spread (e.g., Feb 2026 9/7 bear put) sized 0.5–1% portfolio or a tactical 1% short equity with 6–8% stop; avoid naked short puts given skew and tail risk. Consider a pair: long ABNB (1–1.5%) v short AVTR (0.75–1%) to isolate relative flow-driven moves.

Contrarian angles: Large AVTR put volume may be hedge flow (structured product protection) not pure directional bearishness — if true, selling premium into IV spikes could be profitable; conversely ABNB call flow could be options sellers running covered-call business, so naked long calls risk IV crush. Historical parallel: single-stock option flows in thin stocks have produced 10–30% overshoots due to hedging; expect mean reversion once open interest settles. Act with spread structures and explicit stop/IV thresholds to avoid gamma-whipsaw.

Key Decisions for Investors

• Establish a tactical 1–2% long ABNB position via a Feb 2026 120/140 call debit spread (buy 120, sell 140) to capture dealer delta-buying; size at 1–2% portfolio and take profits on a +10% move or if IV increases >25% from current levels.
• Establish a bearish position in AVTR via a Feb 2026 9/7 bear put spread sized 0.5–1% of portfolio (limit cost) or a 1% short equity position with a 6–8% stop; add only if price breaks below the nearest 7–10% support or if put IV rises >30% vs 30‑day average.
• Implement a relative-value pair trade: long ABNB (1–1.5%) vs short AVTR (0.75–1%) to capture asymmetric flow; rebalance within 4–8 weeks or when combined P/L hits ±8–12%.
• Avoid naked option selling on AVTR and avoid naked long calls on ABNB; if selling premium, wait for IV spikes >30% above 30‑day median and use defined-risk spreads only.
• Monitor open interest and block trade prints for both tickers daily for 10 trading days — if top 5 trades are reversed/closed or OI declines >30% off today's peak, reduce positions by 50% to avoid flow unwind risk.