SPX closed Wednesday at $7,498.96, recovering from Tuesday's morning dip to $7,443 with a +0.6% rebound that left the 20-day return mildly positive (+0.5%) and breadth steady at 75% of large-caps above their 50-day moving average. The setup reads as a mid-vol continuation: VIX 17.76 in the middle of its 52-week range, term structure in mild backwardation (VIX/VIX3M ratio 0.865), and the next major catalyst — the FOMC meeting on July 28–29 — sits five trading days out, outside the five-calendar-day event window but close enough to warrant sizing discipline. The trade is a credit spread that gets paid to wait while the bull thesis either re-asserts itself or fails.
The trade. Sell the SPX $7,200 put / buy the $7,180 put, expiring Friday morning, Aug 21, 2026 (AM-settled standard monthly SPX). Net credit $3.60 per share, or $360 per contract at mid. Realistic fill on a 1-contract order is closer to $3.00 per share, $300 per contract (selling the bid, buying the ask). Max profit $360 (full credit retained if SPX closes at or above $7,200 at settlement). Max loss $1,640 (if SPX closes at or below $7,180). Breakeven $7,196.40 — SPX can fall 303 points (4.0%) from the Wednesday close before the position starts losing money. Probability of profit ~80% based on the 0.20-delta short strike. Strike notation for broker chains: $7200 / $7180.
Why a 20-wide spread instead of 10-wide. The standard 10-point bull put spread at this delta would carry roughly $35 of mid credit in the live Aug 21 chain — too thin to clear a $1,000 max-loss cap at usable economics. The 20-point version captures $360 of credit because the live chain's volatility skew prices closer-to-the-money puts meaningfully richer than OTM puts: the 7,200 put costs $49.35 mid while the 7,180 put costs $45.75, leaving $3.60 of spread width per share. The 20-wide structure also moves the long strike further OTM, where bid-ask friction is slightly tighter (the 7,180 put has 74 contracts of intraday volume vs. 17 on the 7,200 short). Net effect: credit rises from $35 to $360 while max loss only grows from $965 to $1,640. The reward-to-risk ratio on the 20-wide structure is roughly 1 : 4.6 ($360 max profit vs. $1,640 max loss), which is the cleanest placement the live chain offers today.
Why this structure class. A bull put spread on SPX collects premium up front, caps the downside, and lets time decay do the work while the underlying trend holds. The 30-day expiry is far enough out that theta bleed is moderate rather than aggressive, and the short strike at $7,200 sits 4.0% below spot — comfortably inside the range the bull regime has defended for the past three weeks. SPX is cash-settled European-style; the short put carries no early-assignment risk on ex-dividend dates or in fast-market scenarios, which is the institutional default for index-level short-premium structures.
Expected Move (1 Standard Deviation)
Using VIX 17.76 as the IV estimate, the 1σ expected moves for SPX are:
| Window | Points | Percent |
|---|---|---|
| 1 day | ±70 | ±0.93% |
| 1 week (5 sessions) | ±156 | ±2.08% |
| 30 days (to Aug 21) | ±382 | ±5.09% |
| 60 days | ±540 | ±7.20% |
| 90 days | ±661 | ±8.81% |
| 1 year (252 sessions) | ±1,106 | ±14.74% |
The 30-day 1σ move is ±382 points. The short strike at $7,200 is 299 points below spot — roughly 0.78σ below current. For a short strike at 0.20 delta, an expected-move position at 0.78σ below current is the canonical "collect premium inside the trend" placement: the strike sits inside one standard deviation of the expected move, which means the chain's implied probability of finishing above the strike at expiry is ~80%. The breakeven at $7,196.40 sits 303 points below spot, just inside the 30-day 1σ lower band; a move that puts SPX through breakeven is a regime-confirming break, not a routine fluctuation.
Market context
| Driver | Reading | Source |
|---|---|---|
| SPX spot | $7,498.96 | Wednesday close (yfinance) |
| SPX 5d return | −0.59% | Computed from closes |
| SPX 20d return | +0.51% | Computed from closes |
| SPY vs MA50 | $747.41 vs $744.04 (above) | yfinance |
| SPY vs MA200 | $747.41 vs $694.69 (well above) | yfinance |
| VIX | 17.76 | yfinance |
| VIX3M | 20.54 | yfinance |
| Term ratio (VIX / VIX3M) | 0.865 | Mild backwardation |
| IV-rank proxy (SPY) | 33.3 | Computed vs 252d range |
| IV-rank proxy (QQQ) | 56.1 | Computed vs 252d range |
| Breadth — % above 50d MA | 75% | Computed vs SPY/QQQ/IWM/DIA |
| 2s10s Treasury spread | 0 bps | Treasury.gov — flat, not inverted |
| DXY (UUP proxy) | $28.45 | +0.7% 5d, +0.0% 20d |
| Copper/gold ratio | 0.00158 | Neutral |
| FOMC | Jul 28–29 (5 calendar days) | Federal Reserve calendar |
The bull regime is intact on every metric that matters: SPY sits above both the 50-day and 200-day moving averages, breadth is healthy at 75% above the 50-day, the 20-day return is positive, and the VIX term structure is mildly backwardated rather than elevated. None of the macro caution triggers are present — the 2s10s spread is flat at 0 bps rather than inverted, the DXY is roughly flat rather than rallying, and the copper/gold ratio is neutral rather than signaling slowdown. The single notable cross-current is QQQ's IV-rank at 56.1, which is moderately elevated versus SPY's 33.3 — that gap reflects the tech-led rotation pressure visible in XLK's −2.1% 20-day return, but it does not yet threaten the broader bull thesis.
| Sector | 5d Return | 20d Return | Read |
|---|---|---|---|
| XLE (Energy) | +4.78% | +8.70% | Energy bid extends — possible Iran/oil premium |
| XLV (Health Care) | +0.72% | +4.76% | Defensive leadership intact |
| XLF (Financials) | −0.90% | +4.03% | Mild steepener trade |
| XLU (Utilities) | +1.57% | +1.91% | Defensive wobble |
| XLP (Consumer Staples) | +1.09% | +0.79% | Defensive bid |
| IWM | −0.67% | −0.52% | Small-caps flat — neutral |
| XLY (Consumer Discretionary) | −2.55% | +0.23% | Cyclical drag |
| XLI (Industrials) | −0.67% | +0.39% | Slowdown concern |
| XLB (Materials) | +0.63% | −0.10% | Industrial flat |
| XLK (Technology) | −0.72% | −2.13% | Rate-sensitivity pain — worst sector over 20d |
Tech (XLK) remains the dominant signal: −2.1% over 20 sessions against an essentially flat SPY tape is the classic late-cycle rotation signature. Defensive leadership (XLE, XLV, XLU) extends while cyclicals (XLY, XLB, XLI) lag. QQQ is down 1.2% over 20 sessions — a milder drawdown than Tuesday's reading, consistent with rate-sensitivity pressure in long-duration tech names. The pattern is consistent with a bull regime in distribution rather than acceleration: trend intact, but leadership narrowing. That context supports a credit spread over a long-vol expression — the structure collects premium while the tape works through the leadership question.
Structure details
| P&L field | Value | Math |
|---|---|---|
| Short $7,200 put (mid) | $49.35 | bid $49.10, ask $49.60, vol 17 |
| Long $7,180 put (mid) | $45.75 | bid $45.40, ask $46.10, vol 74 |
| Net credit (mid) | $3.60 per share | $49.35 − $45.75 = $3.60 |
| Per-contract credit (×100) | $360.00 | $3.60 × 100 |
| Max profit | $360.00 | Full credit — collected if SPX closes ≥ $7,200 at expiry |
| Max loss | $1,640.00 | ($20 width − $3.60 credit) × 100 = $16.40 × 100 |
| Breakeven | $7,196.40 | $7,200 short strike − $3.60 credit per share |
| POP estimate | ~80% | 1 − 0.20 delta for the short strike |
| Required move against | 4.04% | From $7,499 to $7,196 — within 30-day 0.79σ range |
| Risk-reward | 1 : 4.6 | $360 max profit vs $1,640 max loss |
| Reward-to-risk | 0.22:1 | Smaller reward, defined risk |
| Implied volatility (live chain) | Short $7,200 put | Long $7,180 put |
|---|---|---|
| IV | 18.5% | 18.7% |
| Source | yfinance SPX Aug 21 2026 chain at 06:35 ET | yfinance SPX Aug 21 2026 chain at 06:35 ET |
| Greek (per leg, BS at spot) | Short $7,200 put | Long $7,180 put | Net |
|---|---|---|---|
| Delta | −0.20 | −0.17 | −0.03 net short delta |
| Theta (per day) | +0.06 | +0.05 | +0.11 per day (net positive — selling time) |
| Vega (per 1 vol pt) | −0.22 | −0.19 | −0.03 per vol point (mild net short vega) |
The trade is net short delta at −0.03 (mildly bullish positioning — collects premium if SPX stays flat or rises). It is net long theta at +$11 per day (time decay works in the position's favor across both legs). Vega is mildly negative at −0.03 per vol point — a 1-point VIX drop from 17.76 to 16.76 lifts the mark by roughly $3; a 1-point VIX rise costs roughly $3. The vega exposure is the secondary risk; delta and theta are the structural edge.
Alternatives considered
| Rejected | Reason |
|---|---|
| 10-wide 7200/7190 | Live chain credit too thin ($35/contract) — below the $150 minimum for a 10-wide structure |
| 10-wide 7195/7185 | Same problem — live mid credit only $0.35/share = $35/contract; reward-to-risk 1:27 |
| 15-wide 7200/7185 | Mid credit $220/contract — viable but tighter than 20-wide; max loss $1,280 |
| 25-wide 7200/7175 | Mid credit $445/contract, max loss $2,055 — better R:R but max loss above the $2,000 line |
| Iron condor on SPX | No range confirmation — breadth is healthy, not narrowing |
| Bear call vertical on SPX | No bear case — SPY above both MAs, breadth intact |
| Bull call vertical on SPX | Mid-vol favors credit over debit |
| Put spread insurance (tail hedge) | VIX 17.76 is mid-range, not complacency; no cheap tail to buy |
| SPY instead of SPX | SPY is American-style; short put carries early-assignment risk |
| XSP (1/10 of SPX) | Lower priority — SPX is executable at the chosen strike |
| Sep 18 monthly expiry | One-month window is the target; longer adds gamma risk |
10-wide 7200/7190. Live yfinance chain at the chosen strikes shows short 7200 mid $49.35 and long 7190 mid $48.30, leaving only $1.05 per share = $105 per contract — below the $150 minimum threshold for a 10-wide structure. Reward-to-risk of 1:8.5 is acceptable but the absolute credit is too thin to clear standard position-sizing discipline.
10-wide 7195/7185. Same problem at a slightly lower strike: short 7195 mid $47.50 and long 7185 mid $47.15 leave $0.35 per share = $35 per contract. The 7185 put is closer to spot than the 7195 in delta-adjusted terms — only 0.05 of mid delta separates them — which is why the spread credit collapses. Not tradeable.
15-wide 7200/7185. Mid credit of $2.20 per share = $220 per contract. Max loss $1,280. Viable alternative; less reward than the 20-wide but tighter risk. Useful for accounts that want to keep max loss below $1,500.
25-wide 7200/7175. Mid credit of $4.45 per share = $445 per contract. Max loss $2,055. Reward-to-risk 1:4.6 — same as the 20-wide. Useful for accounts with explicit premium-selling mandates willing to take the larger defined risk.
Iron condor on SPX. No range confirmation — breadth is healthy at 75%, not narrowing. Condors perform best when the tape is range-bound for the full duration; a bull regime with mid-vol favors a directional credit spread over a market-neutral structure.
Bear call vertical on SPX. No bear case — SPY is above both MAs, 20d return is positive, breadth is intact. Selling upside premium requires a resistance level or a regime break that isn't present.
Bull call vertical on SPX. Mid-vol favors credit over debit. The same bullish thesis expressed as a long call vertical would cost $5–6 per share (~$500–600 per contract) for similar upside exposure; the credit spread collects premium up front and pays out if the trend holds or reverses modestly.
Put spread insurance (tail hedge). Complacency regime signature — VIX <14 — is not present. VIX at 17.76 is mid-range; buying tail protection is appropriate when premium is cheap, not when it is mid-range.
SPY instead of SPX. SPY is American-style; the short put carries early-assignment risk on ex-dividend dates and in fast markets. SPX is cash-settled European-style — the institutional default for index-level short-premium structures.
XSP (1/10 of SPX). XSP options trade 1/10 the notional of SPX; same European-style cash settlement. The math scales 10:1, but SPX is the executable primary chain at the chosen strike today.
Sep 18 monthly expiry. The structure target is a one-month window; longer duration adds theta bleed and gamma risk for the same short-strike placement. Sep 18 also crosses the Sep FOMC meeting — a known catalyst inside the trade window.
Position sizing
- Trade size: 1 contract of the bull put spread. Max risk $1,640 per contract, above the $1,000 default target but well under the $5,000 cap. The 20-wide structure was selected specifically because the live chain skew made the 10-wide credit too thin to clear a $1,000 max-loss target at usable economics.
- Why 1 contract: the 20-wide structure pushes the absolute max loss above the $1,000 default. Higher-conviction accounts may still run 1 contract ($1,640 max risk); that remains under the $5,000 cap. Going to 2 contracts ($3,280 max risk) approaches the cap and should only be considered for accounts with explicit premium-selling mandates.
- Sizing math: $3.60 credit per share × 100 SPX multiplier = $360 per contract max profit; ($20 width − $3.60 credit) × 100 = $16.40 × 100 = $1,640 per contract max loss. Account risk budget: keep this trade at or below ~1.3% of net liquidating value at the max-loss level.
- Liquidity check: short 7200 put has 17 contracts of intraday volume on the Aug 21 monthly chain; long 7180 put has 74. Both bid-ask spreads are tight (0.5 points, ~1% of mid) — SPX sits in Tier 1 (millions of contracts/day, tightest spreads) on the option-volume ranking. No liquidity concerns.
Risks to the trade
- Sharp drawdown into FOMC. The Federal Reserve's July 28–29 meeting sits 5 calendar days from today and falls inside the trade window (the trade expires Aug 21). A hawkish FOMC surprise — higher rates, tighter forward guidance, or a delayed-cut signal — could pressure equities broadly and put the short strike at risk. Mitigation: the trade is sized at 1 contract with $1,640 max loss; the structure gives back the full $1,640 only on a sustained move through $7,180, which would require a multi-day drawdown well beyond the routine pre-FOMC volatility. A standard pre-FOMC wobble of −1% to −2% lands SPX at $7,424 to $7,349, still well above the breakeven at $7,196.40.
- Vol expansion. The position is mildly short vega. A VIX spike from 17.76 to 25 — typical post-FOMC path if the meeting lands hot — would mark the position down by roughly $30 per contract on the vol move alone, before any directional impact. Mitigation: the theta capture of ~$11/day offsets the daily bleed from a vol spike; the structural edge is theta, not vega, so this is the trade's secondary risk rather than primary.
- Regime break. A confirmed bear regime — SPY closing below MA200 at $694.69 with breadth flipping below 40% — would invalidate the bull thesis. The continuation trade would not have been selected in a bear regime, so this risk is a regime change rather than a routine fluctuation. Mitigation: the trade has a 5-day window before FOMC and a defined exit plan (see Position Management); if breadth breaks before expiry, close at the market rather than hold into a regime-confirming move.
- Chop with elevated vol. The trade's worst case is SPX grinding sideways in a tight range with VIX elevated (15–20). Theta continues to work, but the credit capture is slowed by negative gamma on the short strike. Mitigation: the 30-day window is short enough that even modest time decay produces $360 capture; a chop regime is not the loss case, only a slower-payoff case.
- AM-settlement timing risk. Standard monthly SPX settles on the Friday morning opening print. The last trade day for the Aug 21 expiry is Thursday, August 20. After Thursday's close, the position cannot be managed; overnight news from Thursday 4:00 PM ET through Friday 9:30 AM ET lands directly in the settlement print. Mitigation: for a credit spread with a $7,196.40 breakeven and SPX at $7,499, the overnight gap risk cuts both ways — a gap down that touches the short strike would assign the position but not break the spread, while a gap up is a tailwind. Position management should target closure by Wednesday August 19 (two days before last trade) for accounts uncomfortable with the overnight window.
Position management
| Trigger | Action | Rationale |
|---|---|---|
| Profit-take at 50% | Close at $1.80 debit (50% captured) | A 50% gain on a short-premium structure is a strong realization. Remaining credit still has optionality, but the bulk of the edge has been captured. |
| Stop-loss at 2× credit | Close if debit rises to $7.20/share ($720 to close) | A move from $3.60 credit to $7.20 debit is a regime-confirming shift. Holding through it exposes the position to full max loss without a corresponding thesis update. |
| Delta stop | Close if short put delta rises above 0.35 | Delta expansion is the early signal of a regime break before the credit-to-debit move is material. A 0.35 delta on the short strike is consistent with the strike moving toward the spot price. |
| Time stop at 7 days remaining | Close on Aug 14 unless stops hit | Gamma accelerates into the final two weeks. Closing one week before expiry removes the gamma tail. |
| FOMC adjustment (Jul 28–29) | Hold through FOMC unless delta stop triggers | The structure's short strike at $7,200 is well below spot; a standard pre-FOMC wobble does not threaten the position. The breakeven buffer still has $303 of room. |
| Roll down-and-out | Roll down 5 and out to Sep 18 if short strike tested | Rolling preserves the credit capture if SPX stabilizes near the strike; the new short strike collects fresh premium and adds runway. |
What to watch today
- Breadth reading. Today reads 75% above 50d MA. A close below 60% would be the first warning that the bull regime is narrowing; below 40% is the regime-break threshold and would prompt closing the position ahead of the FOMC window.
- VIX term structure. Currently 0.865 (mild backwardation). A flip into deeper backwardation (ratio >1.05) signals stress and would mark the position down on the vega tail. A move back into contango (ratio <0.80) signals complacency and would be a tailwind for the short-premium capture.
- XLK relative to MA200. Tech is the leading indicator. QQQ at $705.35 vs MA200 at $641.06 is still comfortable; a break of QQQ below $680 (still 6.1% above MA200) would signal a regime shift toward confirmed bear and would invalidate the bull-put-spread thesis.
- FOMC setup news flow. The Jul 28–29 meeting enters the five-calendar-day event window today. From this date forward, the structure transitions from a pure continuation trade into an event trade; the position management plan above addresses the FOMC path explicitly.
- 2s10s Treasury spread. Currently flat at 0 bps. A move into inversion (negative) would layer macro caution on top of the leadership rotation; a steepener back to +25 bps would re-affirm the bull case.
Disclosures
Not investment advice. Educational content only. Options trading involves substantial risk of loss, including the full amount of premium paid for long-option structures or the full width of spreads for short-option structures. Past performance is not indicative of future results.
Live chain source. Strikes and mid premiums were pulled from the live yfinance SPX option chain at 06:35 ET on July 23, 2026. The Aug 21 2026 monthly chain returned short put 7200 mid $49.35 (bid $49.10, ask $49.60, IV 18.5%, volume 17) and long put 7180 mid $45.75 (bid $45.40, ask $46.10, IV 18.7%, volume 74). Total live spread credit was $3.60 per share or $360 per contract at mid; realistic fill on a 1-contract order is closer to $3.00 per share or $300 per contract (selling at the bid, buying at the ask). BSM flat-IV estimate using VIX 17.76% produced a credit of $3.00 per share — within 17% of the live mid; live values are used throughout this article. The 20-wide structure was selected over the standard 10-wide placement because live chain skew made the 10-wide credit too thin ($35/contract) to clear standard position-sizing discipline. Strike selection was driven by the live chain, not by OptionStrat; build the structure in your broker and confirm premiums before placing any orders.
Build your own structure. OptionsStrat affiliate link lets you model the bull put spread and see the full risk curve, including vega exposure and time-decay curves that don't appear in a simple P&L table. Verify all strikes and premium with your broker before placing any orders.
Settlement note. Standard monthly SPX options are AM-settled — they expire on the Friday opening print, not the close. The last trade day for the Aug 21 expiry is Thursday, August 20, 2026. After Thursday's close, the position cannot be managed; overnight Thursday news lands directly in the settlement print.