XSP Iron Condor — July 10, 2026: Post-CPI Pin the Strike, Ride Theta Into Friday

Reasoning

CPI came in at 2.7% YoY (vs. 2.8% expected), with Core CPI at 3.0% (vs. 3.1% expected). Both were a touch soft. The market initially sold off (ES −0.4% in the first 5 minutes) on the "soft CPI = growth scare" read, then reversed and rallied as the soft print was reframed as "disinflation continues, Fed has room."

Pre-CPI, XSP IV was bid at 15.2 (rank 78). At 10:18 AM, IV had come in to 13.8 (rank 65). The crush was real but not finished — typically post-CPI vol decay plays out over 2–3 days for a soft-print scenario.

The 558/553 short put is roughly 1.0% below spot. The 568/573 short call is roughly 1.7% above spot. The structure is asymmetric on purpose: the call side is wider because the post-CPI rally had further to run if yields dropped (and yields did drop, with the 10Y falling 7bps on the print).

Premium collected of $1.85 against a max risk of $3.15 is a 37% credit-to-width ratio — typical for 7DTE in a moderately elevated IV regime. The probability of profit (POP) at entry was 68% per the OptionsStrat calculator.

Position Payoff at Expiration

The P/L diagram for an iron condor is two stacked short verticals. The trade has a flat profit region (both wings untouched), a sloped-loss region on each wing (where one short strike is tested but the long wing still caps the loss), and a flat max-loss region on each wing (where the long wing has capped the loss).

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Key levels for this trade:

• Lower profit boundary — XSP at expiration above 558 (the short put strike). The put side of the condor expires worthless; the call side is in the profit zone.
• Upper profit boundary — XSP at expiration below 568 (the short call strike). The call side expires worthless; the put side is in the profit zone.
• Max profit zone — XSP at expiration between 558 and 568. The full $1.85/condor credit × 10 condors = $1,850 is realized.
• Lower breakeven — XSP at 556.15 (short put strike 558 minus credit $1.85). Below this point, the put side starts losing dollar-for-dollar with the underlying.
• Upper breakeven — XSP at 569.85 (short call strike 568 plus credit $1.85). Above this point, the call side starts losing dollar-for-dollar with the underlying.
• Max loss (downside) — XSP at expiration below 553 (the long put strike). The put-side loss is capped at $5 width minus the put-side credit; combined with the call-side full credit, total loss = $3.15/condor × 10 condors × 10 multiplier = $315/condor = $3,150.
• Max loss (upside) — XSP at expiration above 573 (the long call strike). Symmetric structure on the upside; same $3,150 max loss.

Greeks Snapshot (Black-Scholes)

Numbers computed at entry spot 565.5 (10:18 AM ET print), 7 DTE, IV=13.8% (entry chain IV), r=4.5%, no dividend yield. Per-condor = per-share × 10 (XSP multiplier).

Why This Structure

The iron condor on XSP at 7DTE was the right structure for the post-CPI window because:

• The view was range-bound with elevated IV. Pre-CPI IV at rank 78 was elevated but post-CPI crush was expected to play out over 2-3 days. Selling premium in a defined-risk structure lets the trade collect the rich premium while the IV crush accelerates the decay.
• The structure expresses the view with defined risk. The wings cap the loss at $3.15/condor regardless of how far XSP moves. A naked short strangle would have collected more premium but had unbounded risk.
• XSP is the right index at this notional. SPX 7DTE condors have a $100 multiplier; a single 5-point wing is $500 of risk. XSP's $10 multiplier gives a $50 wing, which fits the 0.10% NLV cap at the book's current size.
• The asymmetric width matches the post-CPI direction. Putting more distance on the call side (1.7% above spot vs 1.0% below for the put side) gives the structure room for a continuation rally if the disinflation read pushes yields lower. A symmetric condor would have capped the call-side premium.

Thesis

• Why post-CPI? Binary-event vol crush is a known, repeatable phenomenon. The IV-rank filter (>=50) at entry tells us the premium is rich enough to sell; the post-event window gives us 2-3 days of accelerated theta decay as IV normalizes.
• Why 7DTE? The theta curve peaks around 14-21 DTE for a 0.15 delta short strike, but post-event IV decay plays out over 2-3 days. A 7DTE condor captures most of the crush before the gamma-acceleration risk of the final 3 days. A 14DTE would have given up too much premium to time decay while waiting for the crush to finish.
• Why the 558/568 strikes? Roughly 1.0% below and 1.7% above spot, which sits inside the 30-day 1σ expected move (about 2.5% one-way for XSP at IV 13.8) while keeping the credit-to-width ratio at the workable 30-40% threshold. A 0.5% OTM strike would have improved POP but cut the credit below 25% of width.
• Why the asymmetric 5-point wings? The put-side wing (553 long) caps downside risk at 5 points; the call-side wing (573 long) gives 5 points of upside room. The asymmetry in distance from spot (1.0% vs 1.7%) compensates for the post-CPI directional bias to the upside if yields dropped.
• Why 10 contracts? Max-loss cap is 0.06% NLV per condor (well below the 0.10% cap for defined-risk multi-leg structures); 10 condors × $3.15 max risk × 10 multiplier = $315/condor = $3,150 total max risk. Sizing is the defense against an unmodeled gap.

Risk

Management Plan

• Day 1 (entry through close): hold. Position is working; theta is the main driver. Watch for any sign of an overnight gap or a follow-through move from the post-CPI reaction.
• Day 2: if premium has decayed 40%+ and XSP is inside the body (between 558 and 568), take partial profits or close the full position at 50% of credit. The post-event vol crush typically peaks on day 2; further decay slows materially.
• Day 3-5: if still open, the trade is in the gamma-acceleration zone. Watch for any test of the short strikes; if either short strike is tested intraday, evaluate closing the threatened wing and letting the other side run, or rolling the threatened wing out in time for a net credit.
• Day 6-7 (final 24 hours): prefer the close. The theta curve flattens; only directional risk remains. Closing at any positive P&L is acceptable.

The realized exit was the 50% profit target on day 2, which is consistent with the playbook.

Intraday Management

• Day 1 (July 10): XSP closed at 565.3, just above the short call strike. Condor value at close: $1.20 (35% decay).
• Day 2 (July 11): XSP closed at 563.8. Condor value: $0.85 (54% decay). Took the 50% profit target and closed the position.
• Closed: $0.85 buyback, locking in $1.00 of profit per condor ($1.85 − $0.85) on $3.15 of risk = 31.7% return on risked capital in 2 days.

Outcome

A textbook post-event trade. The setup works because the vol crush is a known, measurable phenomenon after binary events; the IV-rank filter (>50) tells you the premium is worth selling; the asymmetric width on the call side gives you room for a continued rally without the short strike going ITM at expiration.

Lessons

• The asymmetric width (5-point call side vs 5-point put side, but different distances from spot) was the right call. A symmetric condor at 558/553 and 563/568 would have capped the call-side premium at $0.65 (because the 563 short call was right at the money pre-CPI, and the rally would have moved it ITM within hours). The wider 568/573 captured the post-CPI rally while keeping the structure defined-risk.
• The 50% profit target fired on day 2, which is faster than the typical 4–5 days for a 7DTE condor. The IV crush accelerated the decay. Faster decay means accepting smaller profit-per-day but capturing more of the crush.
• I sized to a 0.06% NLV max risk per condor, which is below the playbook's 0.10% cap for defined-risk multi-leg structures. The smaller size gave me room to add a second structure later in the week if the setup repeated.