■ 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 — 525 — is the max pain price.
Open interest by strike · Fri, Oct 30
■ calls (up)■ puts (down)MSFT open contracts per strike for Fri, Oct 30.
Open-interest change · 2026-10-28 → 2026-10-29
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. Only strikes observed on both days are compared; 8 strikes were in only one day’s snapshot (each keeps its largest strikes) and are left out. Biggest moves: 440 +12K · 580 +6K · 480 +4K · 490 +4K
Volume by strike · Fri, Oct 30
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 30
— call IV— put IVATM ≈ 37.8% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 30
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, Oct 30
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.94
-0.31
512.5
0.0104
0.04
-0.32
-0.06
0.91
-0.46
515
0.0138
0.04
-0.46
-0.09
0.88
-0.69
517.5
0.0181
0.06
-0.69
-0.12
0.83
-1.02
520
0.0230
0.07
-1.03
-0.17
0.77
-1.50
522.5
0.0280
0.09
-1.51
-0.23
0.69
-2.16
525
0.0325
0.10
-2.16
-0.31
0.61
-3.00
527.5
0.0358
0.11
-3.00
-0.39
0.51
-3.58
530
0.0373
0.11
-3.58
-0.49
0.42
-3.15
532.5
0.0369
0.11
-3.16
-0.58
0.33
-2.27
535
0.0344
0.10
-2.27
-0.67
0.25
-1.54
537.5
0.0304
0.09
-1.55
-0.75
0.18
-1.01
540
0.0252
0.07
-1.03
-0.82
0.13
-0.65
542.5
0.0198
0.06
-0.69
-0.88
0.09
-0.41
545
0.0149
0.04
-0.47
-0.92
0.04
-0.17
550
0.0077
0.02
-0.28
-0.97
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.