■ put-side pain■ call-side painTotal payout option writers would owe at each settle price (both sides, all open interest, ×100 shares) — low settles hurt put writers, high settles hurt call writers. The minimum — 295 — is the max pain price.
Open interest by strike · Fri, Jul 31
■ calls (up)■ puts (down)IWM open contracts per strike for Fri, Jul 31.
Open-interest change — building vs unwinding
Needs two observed snapshot days for this expiration — the comparison appears automatically once the next weekday snapshot lands. We diff real observations only; nothing is estimated.
Volume by strike · Fri, Jul 31
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Jul 31
— call IV— put IVATM ≈ 26.3% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Jul 31
Net dealer gamma per strike, in dollars per 1% move, assuming the standard convention (dealers long calls, short puts) — an assumption, not an observation. Above the amber flip level hedging tends to dampen moves; below it, to amplify them.
Greeks by strike · Fri, Jul 31
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.78
-0.40
287.5
0.0367
0.08
-0.40
-0.22
0.77
-0.41
288
0.0387
0.08
-0.42
-0.23
0.73
-0.45
289
0.0427
0.09
-0.45
-0.27
0.69
-0.48
290
0.0466
0.10
-0.48
-0.31
0.64
-0.50
291
0.0503
0.10
-0.50
-0.36
0.59
-0.51
292
0.0535
0.10
-0.51
-0.41
0.57
-0.51
292.5
0.0550
0.10
-0.52
-0.44
0.54
-0.51
293
0.0562
0.11
-0.52
-0.47
0.48
-0.50
294
0.0580
0.11
-0.51
-0.52
0.42
-0.47
295
0.0586
0.10
-0.48
-0.58
0.36
-0.43
296
0.0578
0.10
-0.44
-0.65
0.30
-0.39
297
0.0553
0.09
-0.39
-0.71
0.27
-0.36
297.5
0.0534
0.09
-0.36
-0.74
0.24
-0.33
298
0.0511
0.08
-0.33
-0.77
0.19
-0.26
299
0.0453
0.07
-0.27
-0.82
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 51 are in the CSV. Δ per $1 of underlying · Θ per day · vega per IV point.
Stacked — layer the expirations
Call open interest per strike, stacked across the checked expirations — each color is one expiry. Strikes are pruned to the liquid center of each chain.
Max pain history
History starts accruing now: first snapshot taken 2026-07-28. We chart only days we actually observed — check back as the record builds. The measured hit-rate across all tickers lives on the accuracy ledger.
Max pain is arithmetic, not prophecy: the settle price that would minimize what option writers pay out at expiration, computed from open interest alone. Prices sometimes gravitate toward heavy strikes into expiry — dealer hedging is a real flow — but the evidence that max pain predicts settlement better than chance is mixed, and we are not going to pretend otherwise. Use it as a map of where positioning is stacked, next to the fundamentals and the earnings calendar, not as a target.
Data: Cboe delayed public feed (~15 minutes), refreshed here about every 15 minutes. Open interest itself updates once daily, before the open. Educational information, not investment advice.