■ 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 — 286 — is the max pain price.
Open interest by strike · Mon, Sep 21
■ calls (up)■ puts (down)IWM open contracts per strike for Mon, Sep 21.
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: 294 +1K · 300 +538 · 225 +486 · 295 +406
Volume by strike · Mon, Sep 21
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Mon, Sep 21
— call IV— put IVATM ≈ 16.5% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Mon, Sep 21
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 · Mon, Sep 21
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.78
-0.17
282.5
0.0382
0.14
-0.15
-0.25
0.77
-0.17
283
0.0399
0.14
-0.15
-0.27
0.73
-0.18
284
0.0434
0.16
-0.16
-0.30
0.69
-0.18
285
0.0465
0.16
-0.16
-0.34
0.65
-0.18
286
0.0494
0.18
-0.17
-0.38
0.60
-0.18
287
0.0516
0.18
-0.17
-0.42
0.55
-0.18
288
0.0532
0.19
-0.17
-0.47
0.49
-0.17
289
0.0538
0.19
-0.17
-0.52
0.44
-0.16
290
0.0536
0.19
-0.16
-0.58
0.39
-0.15
291
0.0524
0.18
-0.15
-0.63
0.33
-0.14
292
0.0501
0.17
-0.14
-0.69
0.28
-0.13
293
0.0469
0.16
-0.13
-0.74
0.23
-0.11
294
0.0430
0.15
-0.12
-0.79
0.19
-0.10
295
0.0385
0.13
-0.10
-0.83
0.15
-0.08
296
0.0336
0.12
-0.08
-0.87
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 39 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.