BSX wheel: cash-secured put & covered-call yields
Boston Scientific Corp. · Healthcare · $45.05 close on Oct 19, 2026
What the Oct 19, 2026 close says about BSX
At 47.9% implied volatility, the options market is pricing a one-standard-deviation move of about $6.39 (14.2%) in BSX by Nov 20, 2026, 32 days out.
Selling the $42.50 put (−0.31Δ) for $1.40 means assignment would leave a cost basis of $41.10, 8.8% below the $45.05 close.
The 60-day 0.30Δ put pays 1.4× the premium of the 32-day one for 1.9× the time — more premium per day on the 32-day contract ($0.044 vs $0.033).
At 0.30Δ on the Nov 20 expiry the put yields 3.29% on its strike and the call 2.22% on spot: puts pay 1.5× what calls do on BSX this session.
Moving down to the $40.50 put (−0.22Δ) buys 4.4% more room below spot and keeps 57% of the 0.30Δ premium.
Open interest in the stored window totals 117,809 contracts; the largest single line is the $40 put expiring Dec 18 with 46,124 (39.2% of the window).
By options volume BSX ranks #77 of 608 names in our universe.
The builder re-quotes every leg from the live chain when it opens; tracking is free to start.
Cash-secured puts on BSX
| Target | Strike | Δ | Last trade | Premium / contract | Cash secured | Period yield | Annualized | Breakeven | OI | Volume |
|---|---|---|---|---|---|---|---|---|---|---|
| 0.30Δ | $42.50 | −0.31 | $1.40 Oct 19 | $140.00 | $4,250 | 3.29% | 37.6% | $41.10 | 0 | 2 |
| 0.20Δ | $40.50 | −0.22 | $0.80 Oct 19 | $80.00 | $4,050 | 1.98% | 22.5% | $39.70 | 0 | 2 |
Snapshot #4183 · session 2026-10-19 · captured 22:11 UTC · 15-min delayed · yield = premium ÷ strike · annualized = yield × 365 ÷ 32
| Target | Strike | Δ | Last trade | Premium / contract | Cash secured | Period yield | Annualized | Breakeven | OI | Volume |
|---|---|---|---|---|---|---|---|---|---|---|
| 0.30Δ | $42.50 | −0.33 | $1.98 Oct 19 | $198.00 | $4,250 | 4.66% | 28.3% | $40.52 | 6,145 | 12 |
| 0.20Δ | $40 | −0.21 | $1.10 Oct 19 | $110.00 | $4,000 | 2.75% | 16.7% | $38.90 | 46,124 | 22 |
Snapshot #4183 · session 2026-10-19 · captured 22:11 UTC · 15-min delayed · yield = premium ÷ strike · annualized = yield × 365 ÷ 60
Covered calls on BSX
| Target | Strike | Δ | Last trade | Premium / contract | Yield on spot | Annualized | If called | If called, ann. | OI | Volume |
|---|---|---|---|---|---|---|---|---|---|---|
| 0.30Δ | $49 | 0.30 | $1.00 Oct 19 | $100.00 | 2.22% | 25.3% | 10.99% | 125.3% | 0 | 6 |
| 0.20Δ | $51 | 0.21 | $0.68 Oct 19 | $68.00 | 1.51% | 17.2% | 14.72% | 167.9% | 0 | 28 |
Snapshot #4183 · session 2026-10-19 · captured 22:11 UTC · 15-min delayed · yield = premium ÷ spot · if called = (premium + strike − spot) ÷ spot · annualized × 365 ÷ 32
| Target | Strike | Δ | Last trade | Premium / contract | Yield on spot | Annualized | If called | If called, ann. | OI | Volume |
|---|---|---|---|---|---|---|---|---|---|---|
| 0.30Δ | $50 | 0.32 | $1.45 Oct 19 | $145.00 | 3.22% | 19.6% | 14.21% | 86.4% | 25,446 | 307 |
| 0.20Δ | $55 | 0.15 | $0.56 Oct 19 | $56.00 | 1.24% | 7.6% | 23.33% | 141.9% | 5,865 | 129 |
Snapshot #4183 · session 2026-10-19 · captured 22:11 UTC · 15-min delayed · yield = premium ÷ spot · if called = (premium + strike − spot) ÷ spot · annualized × 365 ÷ 60
BSX volatility, dividends and liquidity
- Implied volatility (ATM, ≈30 days)
- 47.9%session 2026-10-19
- IV rank / IV percentile
- Unavailable1
- Next earnings
- Unavailable2
- Next ex-dividend
- None announcedchecked Oct 19, 2026
- Open interest, stored window
- 117,809 contractssession 2026-10-19
- Largest open-interest line
- $40 put · Dec 18 · 46,124
- Bid/ask spread
- Unavailable3
- Options liquidity rank
- #77 of 608 optionable names by options volume
How these numbers are made
One end-of-day snapshot per session from a 15-minute-delayed feed. A premium is a contract’s last trade, used only if it printed that session, sits above intrinsic value and is in order with its neighbours; deltas are the feed’s own. Expiries are the first at least 30 and 60 days out, and nothing under 30 days is annualized. Not investment advice. Full methodology.
- We are building our own daily implied-volatility history (1 of 252 sessions so far); IV rank and percentile need a full year of it.
- Our data provider does not license announced earnings dates, and we do not publish estimates.
- Our data feed carries last trades, not live bid/ask quotes, so we cannot show a spread.