SPRO Covered Call Strategy
SPRO (Spero Therapeutics, Inc.), in the Healthcare sector, (Biotechnology industry), listed on NASDAQ.
Spero Therapeutics, Inc., a clinical-stage biopharmaceutical company, focuses on identifying, developing, and commercializing treatments for multi-drug resistant (MDR) bacterial infections and rare diseases in the United States. The company's product candidates include tebipenem pivoxil hydrobromide (HBr), an oral carbapenem-class antibiotic to treat complicated urinary tract infections, including pyelonephritis for adults; SPR206, a direct acting IV-administered agent to treat MDR Gram-negative bacterial infections in the hospital; and SPR720, an oral antibiotic for the treatment of non-tuberculous mycobacterial pulmonary disease. It has license agreement with Meiji Seika Pharma Co., Ltd. to support the development of tebipenem HBr; license agreement with Everest Medicines to develop, manufacture, and commercialize SPR206 in Greater China, South Korea, and Southeast Asian countries; collaboration agreement with Bill & Melinda Gates Medical Research Institute to develop SPR720 for the treatment of lung infections caused by Mycobacterium tuberculosis; and license agreement with Vertex Pharmaceuticals Incorporated for patents relating to SPR720, as well as SPR719, an active metabolite. The company was founded in 2013 and is headquartered in Cambridge, Massachusetts.
SPRO (Spero Therapeutics, Inc.) trades in the Healthcare sector, specifically Biotechnology, with a market capitalization of approximately $141.3M, a trailing P/E of 6.23, a beta of 1.43 versus the broader market, a 52-week range of 0.628-3.22, average daily share volume of 391K, a public-listing history dating back to 2017, approximately 32 full-time employees. These structural characteristics shape how SPRO stock options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.
A beta of 1.43 indicates SPRO has historically moved more than the broader market, amplifying both the directional payoff and the realized volatility relative to an index-equivalent position. The trailing P/E of 6.23 is on the value side, where IV often compresses outside event windows because forward growth expectations are already discounted into the share price.
What is a covered call on SPRO?
A covered call pairs long stock with a short out-of-the-money call, collecting premium and capping upside above the short strike in exchange for income.
Current SPRO snapshot
As of May 15, 2026, spot at $2.79, ATM IV 64.50%, IV rank 9.48%, expected move 18.49%. The covered call on SPRO 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 34-day expiry.
Why this covered call structure on SPRO specifically: SPRO IV at 64.50% is on the cheap side of its 1-year range, which means a premium-selling SPRO covered call collects less credit per unit of strike-width risk, with a market-implied 1-standard-deviation move of approximately 18.49% (roughly $0.52 on the underlying). The 34-day window matched to the front-month expiry keeps theta exposure bounded while still capturing the post-snapshot move; longer-dated SPRO expiries trade a higher absolute premium for lower per-day decay. Position sizing on SPRO should anchor to the underlying notional of $2.79 per share and to the trader's directional view on SPRO stock.
SPRO covered call setup
The SPRO covered call below is built from the end-of-day chain, with each option leg priced at the bid/ask midpoint of its listed strike. With SPRO near $2.79, the first option leg uses a $2.93 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed SPRO chain at a 34-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 SPRO shares for the stock leg in covered calls and collars).
| Action | Type | Strike / Basis | Premium (est) |
|---|---|---|---|
| Buy 100 shares | Stock | $2.79 | long |
| Sell 1 | Call | $2.93 | N/A |
SPRO covered call risk and reward
- Net Premium / Debit
- N/A
- Max Profit (per contract)
- Unbounded
- Max Loss (per contract)
- Unbounded
- Breakeven(s)
- None on modeled curve
- Risk / Reward Ratio
- N/A
Max profit equals short-strike minus cost basis plus premium times 100; max loss is cost basis minus premium (at zero). Breakeven is cost basis minus premium.
SPRO covered call payoff curve
Modeled P&L at expiration across a range of underlying prices for the covered call on SPRO. 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.
When traders use covered call on SPRO
Covered calls on SPRO are an income strategy run on existing SPRO stock positions; traders typically sell calls at 25-35 delta with 30-45 days to expiration to balance premium against upside cap.
SPRO thesis for this covered call
The market-implied 1-standard-deviation range for SPRO extends from approximately $2.27 on the downside to $3.31 on the upside. A SPRO covered call collects premium on an existing long SPRO position, trading off upside above the short call strike for immediate income; the short strike selection should reflect the trader's view on whether SPRO will breach that level within the expiration window. Current SPRO IV rank near 9.48% 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 SPRO at 64.50%. As a Healthcare name, SPRO options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to SPRO-specific events.
SPRO covered call positions are structurally neutral to slightly bullish; 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. SPRO positions also carry Healthcare sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move SPRO alongside the broader basket even when SPRO-specific fundamentals are unchanged. Short-premium structures like a covered call on SPRO carry tail risk when realized volatility exceeds the implied move; review historical SPRO earnings reactions and macro stress periods before sizing. Always rebuild the position from current SPRO chain quotes before placing a trade.
Frequently asked questions
- What is a covered call on SPRO?
- A covered call on SPRO is the covered call strategy applied to SPRO (stock). The strategy is structurally neutral to slightly bullish: A covered call pairs long stock with a short out-of-the-money call, collecting premium and capping upside above the short strike in exchange for income. With SPRO stock trading near $2.79, the strikes shown on this page are snapped to the nearest listed SPRO chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
- How are SPRO covered call max profit and max loss calculated?
- Max profit equals short-strike minus cost basis plus premium times 100; max loss is cost basis minus premium (at zero). Breakeven is cost basis minus premium. For the SPRO covered call priced from the end-of-day chain at a 30-day expiry (ATM IV 64.50%), the computed maximum profit is unbounded per contract and the computed maximum loss is unbounded per contract. Live intraday quotes will differ as the chain moves through the trading session.
- What is the breakeven for a SPRO covered call?
- The breakeven for the SPRO covered call priced on this page is no defined breakeven on the modeled curve 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 SPRO market-implied 1-standard-deviation expected move is approximately 18.49%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
- When should you consider a covered call on SPRO?
- Covered calls on SPRO are an income strategy run on existing SPRO stock positions; traders typically sell calls at 25-35 delta with 30-45 days to expiration to balance premium against upside cap.
- How does current SPRO implied volatility affect this covered call?
- SPRO ATM IV is at 64.50% with IV rank near 9.48%, 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.