How are BIIB straddle max profit and max loss calculated?

Upside max profit is unbounded; downside max profit is bounded at the strike minus the combined call plus put debit (reached at zero). Max loss equals the combined debit times 100 (reached when the underlying pins to the strike). Two breakevens at strike plus debit and strike minus debit. For the BIIB straddle priced from the end-of-day chain at a 30-day expiry (ATM IV 31.56%), the computed maximum profit is unbounded per contract and the computed maximum loss is -$1,361.95 per contract. Live intraday quotes will differ as the chain moves through the trading session.

What is the breakeven for a BIIB straddle?

The breakeven for the BIIB straddle priced on this page is roughly $181.30 and $208.70 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 9.05%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.

How does current BIIB implied volatility affect this straddle?

BIIB ATM IV is at 31.56% with IV rank near 15.29%, which is on the low end of its 1-year range. Premium-buying structures (long call, long put, debit spreads) are relatively cheap in this regime; premium-selling structures collect less credit per unit risk.

BIIB Straddle Strategy

BIIB (Biogen Inc.), in the Healthcare sector, (Drug Manufacturers - General industry), listed on NASDAQ.

Biogen Inc. discovers, develops, manufactures, and delivers therapies for treating neurological and neurodegenerative diseases. The company offers TECFIDERA, VUMERITY, AVONEX, PLEGRIDY, TYSABRI, and FAMPYRA for multiple sclerosis (MS); SPINRAZA for spinal muscular atrophy; and FUMADERM to treat plaque psoriasis. It also provides BENEPALI, an etanercept biosimilar referencing ENBREL; ADUHELM for the treatment of Alzheimer's disease; IMRALDI, an adalimumab biosimilar referencing HUMIRA; and FLIXABI, an infliximab biosimilar referencing REMICADE. In addition, the company offers RITUXAN for treating non-Hodgkin's lymphoma, chronic lymphocytic leukemia (CLL), rheumatoid arthritis, two forms of ANCA-associated vasculitis, and pemphigus vulgaris; RITUXAN HYCELA for non-Hodgkin's lymphoma and CLL; GAZYVA to treat CLL and follicular lymphoma; and OCREVUS for treating relapsing MS and primary progressive MS; and other anti-CD20 therapies. Further, it develops BIIB135, BIIB061, BIIB091, and BIIB107 for MS and neuroimmunology; Aducanumab, Lecanemab, BIIB076, and BIIB080 to treat Alzheimer's disease and dementia; BIIB067, BIIB078, BIIB105, BIIB100, and BIIB110 to treat neuromuscular disorders; BIIB124, BIIB094, BIIB118, BIIB101, and BIIB122 for treating Parkinson's disease and movement disorders; BIIB125 and BIIB104 for treating neuropsychiatry; Dapirolizumab pegol and BIIB059 to treat immunology related diseases; BIIB093 and BIIB131 to treat acute neurology; BIIB074 for neuropathic pain; and BYOOVIZ, BIIB800, and SB15 biosimilars, which are under various stages of development. The company has collaboration and license agreements with Acorda Therapeutics, Inc.; Alkermes Pharma Ireland Limited; Denali Therapeutics Inc.; Eisai Co., Ltd.; Genentech, Inc.; Neurimmune SubOne AG; Ionis Pharmaceuticals, Inc.; Samsung Bioepis Co., Ltd.; Sangamo Therapeutics, Inc.; and Sage Therapeutics, Inc.

BIIB (Biogen Inc.) trades in the Healthcare sector, specifically Drug Manufacturers - General, with a market capitalization of approximately $30.20B, a trailing P/E of 21.94, a beta of 0.20 versus the broader market, a 52-week range of 119.18-205.97, average daily share volume of 1.1M, 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 0.20 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 straddle on BIIB?

A long straddle buys an ATM call and an ATM put at the same strike, profiting from a large move in either direction; max loss equals the combined debit when the underlying pins to the strike at expiration.

Current BIIB snapshot

As of May 15, 2026, spot at $193.94, ATM IV 31.56%, IV rank 15.29%, expected move 9.05%. The straddle 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 28-day expiry.

Why this straddle structure on BIIB specifically: BIIB IV at 31.56% is on the cheap side of its 1-year range, which favors premium-buying structures like a BIIB straddle, with a market-implied 1-standard-deviation move of approximately 9.05% (roughly $17.55 on the underlying). The 28-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 $193.94 per share and to the trader's directional view on BIIB stock.

BIIB straddle setup

The BIIB straddle 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 $193.94, the first option leg uses a $195.00 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 28-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	Call	$195.00	$6.45
Buy 1	Put	$195.00	$7.25

BIIB straddle risk and reward

Net Premium / Debit: -$1,370.00
Max Profit (per contract): Unbounded
Max Loss (per contract): -$1,361.95
Breakeven(s): $181.30, $208.70
Risk / Reward Ratio: Unbounded

Upside max profit is unbounded; downside max profit is bounded at the strike minus the combined call plus put debit (reached at zero). Max loss equals the combined debit times 100 (reached when the underlying pins to the strike). Two breakevens at strike plus debit and strike minus debit.

BIIB straddle payoff curve

Modeled P&L at expiration across a range of underlying prices for the straddle 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%	+$18,129.00
$42.89	-77.9%	+$13,840.99
$85.77	-55.8%	+$9,552.98
$128.65	-33.7%	+$5,264.97
$171.53	-11.6%	+$976.96
$214.41	+10.6%	+$571.05
$257.29	+32.7%	+$4,859.06
$300.17	+54.8%	+$9,147.07
$343.05	+76.9%	+$13,435.08
$385.93	+99.0%	+$17,723.09

When traders use straddle on BIIB

Straddles on BIIB are pure-volatility plays that profit from large moves in either direction; traders typically buy BIIB straddles ahead of earnings, FDA decisions, or other catalysts where the realized move is expected to exceed the implied move priced into the chain.

BIIB thesis for this straddle

The market-implied 1-standard-deviation range for BIIB extends from approximately $176.39 on the downside to $211.49 on the upside. A BIIB long straddle is a pure-volatility play: it profits when the underlying moves far enough from the strike in either direction to overcome the combined call plus put debit, regardless of direction. Current BIIB IV rank near 15.29% sits in the lower third of its 1-year distribution, where IV often re-expands toward the mean; this favors premium-buying structures and disadvantages premium-selling structures on BIIB at 31.56%. 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 straddle positions are structurally neutral / high-volatility (long premium); 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. Always rebuild the position from current BIIB chain quotes before placing a trade.

Frequently asked questions

What is a straddle on BIIB?: A straddle on BIIB is the straddle strategy applied to BIIB (stock). The strategy is structurally neutral / high-volatility (long premium): A long straddle buys an ATM call and an ATM put at the same strike, profiting from a large move in either direction; max loss equals the combined debit when the underlying pins to the strike at expiration. With BIIB stock trading near $193.94, 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 straddle max profit and max loss calculated?: Upside max profit is unbounded; downside max profit is bounded at the strike minus the combined call plus put debit (reached at zero). Max loss equals the combined debit times 100 (reached when the underlying pins to the strike). Two breakevens at strike plus debit and strike minus debit. For the BIIB straddle priced from the end-of-day chain at a 30-day expiry (ATM IV 31.56%), the computed maximum profit is unbounded per contract and the computed maximum loss is -$1,361.95 per contract. Live intraday quotes will differ as the chain moves through the trading session.
What is the breakeven for a BIIB straddle?: The breakeven for the BIIB straddle priced on this page is roughly $181.30 and $208.70 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 9.05%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
When should you consider a straddle on BIIB?: Straddles on BIIB are pure-volatility plays that profit from large moves in either direction; traders typically buy BIIB straddles ahead of earnings, FDA decisions, or other catalysts where the realized move is expected to exceed the implied move priced into the chain.
How does current BIIB implied volatility affect this straddle?: BIIB ATM IV is at 31.56% with IV rank near 15.29%, which is on the low end of its 1-year range. Premium-buying structures (long call, long put, debit spreads) are relatively cheap in this regime; premium-selling structures collect less credit per unit risk.