■ 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 — 290 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)IWM open contracts per strike for Fri, Sep 18.
Open-interest change · 2026-09-10 → 2026-09-11
Net contracts opened (up, green) or closed (down, red) per strike since the previous snapshot — where the walls are building and where they’re unwinding. Biggest moves: 290 −46K · 280 +20K · 278 +10K · 297 +8K
Volume by strike · Fri, Sep 18
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Sep 18
— call IV— put IVATM ≈ 17.8% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Sep 18
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, Sep 18
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.83
-0.19
282
0.0355
0.10
-0.18
-0.22
0.80
-0.20
283
0.0402
0.11
-0.19
-0.25
0.76
-0.21
284
0.0448
0.12
-0.20
-0.29
0.72
-0.23
285
0.0494
0.13
-0.21
-0.33
0.67
-0.24
286
0.0536
0.14
-0.22
-0.37
0.62
-0.24
287
0.0572
0.15
-0.22
-0.42
0.56
-0.24
288
0.0598
0.15
-0.22
-0.47
0.50
-0.23
289
0.0612
0.16
-0.21
-0.53
0.44
-0.22
290
0.0610
0.15
-0.20
-0.59
0.38
-0.20
291
0.0591
0.15
-0.19
-0.65
0.32
-0.18
292
0.0558
0.14
-0.17
-0.70
0.26
-0.16
293
0.0511
0.13
-0.15
-0.76
0.21
-0.14
294
0.0456
0.12
-0.13
-0.81
0.17
-0.12
295
0.0395
0.10
-0.11
-0.85
0.13
-0.10
296
0.0334
0.09
-0.09
-0.89
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 60 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 — nearest expiry vs price
— max pain (nearest expiry)- - delayed closeOne point per snapshot day since 2026-07-28; unobserved days are gaps, not guesses.
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.