BIIB Long Put Strategy
BIIB (Biogen Inc.), in the Healthcare sector, (Drug Manufacturers - General industry), listed on NASDAQ.
Biogen Inc. is a leading biotechnology firm dedicated to the discovery, development, production, and distribution of treatments for complex neurological and neurodegenerative conditions. Its established portfolio includes a range of medications addressing multiple sclerosis (MS), such as TECFIDERA, VUMERITY, AVONEX, PLEGRIDY, TYSABRI, and FAMPYRA. For spinal muscular atrophy (SMA), Biogen provides SPINRAZA, while FUMADERM is available for the treatment of plaque psoriasis. Among its other key offerings is ADUHELM, specifically developed for Alzheimer's disease. The company also markets a selection of biosimilar drugs, including BENEPALI (an etanercept biosimilar akin to ENBREL), IMRALDI (an adalimumab biosimilar comparable to HUMIRA), and FLIXABI (an infliximab biosimilar referencing REMICADE). Further extending its therapeutic reach, Biogen supplies RITUXAN, prescribed for conditions like non-Hodgkin's lymphoma, chronic lymphocytic leukemia (CLL), rheumatoid arthritis, certain types of ANCA-associated vasculitis, and pemphigus vulgaris.
BIIB (Biogen Inc.) trades in the Healthcare sector, specifically Drug Manufacturers - General, with a market capitalization of approximately $31.89B, a trailing P/E of 23.17, a beta of 0.18 versus the broader market, a 52-week range of 121.05-218.06, average daily share volume of 1.2M, a public-listing history dating back to 1991, approximately 8K full-time employees. These structural characteristics shape how BIIB stock options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.
A beta of 0.18 indicates BIIB has historically moved less than the broader market, dampening realized volatility and producing tighter expected-move bands per unit of dollar exposure.
What is a long put on BIIB?
A long put buys downside exposure with a fixed maximum loss equal to the premium paid; profit accrues if the underlying closes below the strike minus premium at expiration.
Current BIIB snapshot
As of June 30, 2026, spot at $216.21, ATM IV 42.12%, IV rank 58.53%, expected move 12.08%. The long put on BIIB below is built from the same end-of-day chain, with strikes snapped to listed contracts and premiums pulled from the bid/ask midpoint at a 31-day expiry.
Why this long put structure on BIIB specifically: BIIB IV at 42.12% is mid-range versus its 1-year history, so strategy selection should anchor more to the directional thesis than to the IV regime, with a market-implied 1-standard-deviation move of approximately 12.08% (roughly $26.11 on the underlying). The 31-day window matched to the front-month expiry keeps theta exposure bounded while still capturing the post-snapshot move; longer-dated BIIB expiries trade a higher absolute premium for lower per-day decay. Position sizing on BIIB should anchor to the underlying notional of $216.21 per share and to the trader's directional view on BIIB stock.
BIIB long put setup
The BIIB long put below is built from the end-of-day chain, with each option leg priced at the bid/ask midpoint of its listed strike. With BIIB near $216.21, the first option leg uses a $215.00 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed BIIB chain at a 31-day expiry; the cross-strike IV skew is reflected directly in the per-leg values rather than approximated. Quantity sizing assumes one contract per option leg (or 100 BIIB shares for the stock leg in covered calls and collars).
| Action | Type | Strike / Basis | Premium (est) |
|---|---|---|---|
| Buy 1 | Put | $215.00 | $9.40 |
BIIB long put risk and reward
- Net Premium / Debit
- -$940.00
- Max Profit (per contract)
- $20,559.00
- Max Loss (per contract)
- -$940.00
- Breakeven(s)
- $205.60
- Risk / Reward Ratio
- 21.871
Max profit equals the strike minus premium times 100 (reached at zero); max loss equals the premium times 100. Breakeven is strike minus premium.
BIIB long put payoff curve
Modeled P&L at expiration across a range of underlying prices for the long put on BIIB. Each row is one sampled price point from the computed payoff curve; the full curve uses 200 price points internally before being summarized into 10 rows here.
| Underlying Price | % From Spot | P&L at Expiration |
|---|---|---|
| $0.01 | -100.0% | +$20,559.00 |
| $47.81 | -77.9% | +$15,778.59 |
| $95.62 | -55.8% | +$10,998.18 |
| $143.42 | -33.7% | +$6,217.76 |
| $191.23 | -11.6% | +$1,437.35 |
| $239.03 | +10.6% | -$940.00 |
| $286.83 | +32.7% | -$940.00 |
| $334.64 | +54.8% | -$940.00 |
| $382.44 | +76.9% | -$940.00 |
| $430.25 | +99.0% | -$940.00 |
When traders use long put on BIIB
Long puts on BIIB hedge an existing long BIIB stock position or express a bearish view with defined risk; position sizing typically scales the put notional to the underlying BIIB exposure being hedged.
BIIB thesis for this long put
The market-implied 1-standard-deviation range for BIIB extends from approximately $190.10 on the downside to $242.32 on the upside. A BIIB long put expresses a directional view that the underlying closes below the strike minus premium at expiration, frequently sized to hedge an existing long BIIB position with one put per 100 shares held. Current BIIB IV rank near 58.53% is mid-range against its 1-year distribution, so the IV signal is neutral; the long put thesis on BIIB should anchor more to the directional view and the expected-move geometry. As a Healthcare name, BIIB options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to BIIB-specific events.
BIIB long put positions are structurally bearish; the modeled P&L assumes European-style exercise at expiration and ignores early assignment, transaction costs, dividends paid before expiry on the stock leg (when present), and the bid-ask spread on the listed chain. BIIB positions also carry Healthcare sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move BIIB alongside the broader basket even when BIIB-specific fundamentals are unchanged. Long-premium structures like a long put on BIIB are particularly exposed to IV-crush risk through scheduled events (earnings, FDA decisions, central-bank meetings) where IV typically contracts post-event regardless of the directional outcome. Always rebuild the position from current BIIB chain quotes before placing a trade.
Frequently asked questions
- What is a long put on BIIB?
- A long put on BIIB is the long put strategy applied to BIIB (stock). The strategy is structurally bearish: A long put buys downside exposure with a fixed maximum loss equal to the premium paid; profit accrues if the underlying closes below the strike minus premium at expiration. With BIIB stock trading near $216.21, the strikes shown on this page are snapped to the nearest listed BIIB chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
- How are BIIB long put max profit and max loss calculated?
- Max profit equals the strike minus premium times 100 (reached at zero); max loss equals the premium times 100. Breakeven is strike minus premium. For the BIIB long put priced from the end-of-day chain at a 30-day expiry (ATM IV 42.12%), the computed maximum profit is $20,559.00 per contract and the computed maximum loss is -$940.00 per contract. Live intraday quotes will differ as the chain moves through the trading session.
- What is the breakeven for a BIIB long put?
- The breakeven for the BIIB long put priced on this page is roughly $205.60 at expiration, derived from end-of-day chain premiums. Breakeven is the underlying price at which the strategy's P&L crosses zero ignoring transaction costs and assignment risk. The current BIIB market-implied 1-standard-deviation expected move is approximately 12.08%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
- When should you consider a long put on BIIB?
- Long puts on BIIB hedge an existing long BIIB stock position or express a bearish view with defined risk; position sizing typically scales the put notional to the underlying BIIB exposure being hedged.
- How does current BIIB implied volatility affect this long put?
- BIIB ATM IV is at 42.12% with IV rank near 58.53%, which is mid-range against its 1-year history. Strategy selection depends more on directional thesis and expected move than on a strong IV signal.