■ 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 — 200 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)NVDA open contracts per strike for Fri, Aug 21.
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, Aug 21
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Aug 21
— call IV— put IVATM ≈ 41.1% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Aug 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 · Fri, Aug 21
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.90
-0.09
170
0.0073
0.09
-0.09
-0.10
0.86
-0.10
175
0.0095
0.11
-0.11
-0.14
0.81
-0.13
180
0.0121
0.14
-0.13
-0.20
0.74
-0.15
185
0.0147
0.17
-0.15
-0.26
0.70
-0.16
187.5
0.0159
0.18
-0.16
-0.30
0.66
-0.16
190
0.0170
0.19
-0.17
-0.34
0.57
-0.17
195
0.0187
0.20
-0.17
-0.43
0.52
-0.17
197.5
0.0192
0.20
-0.17
-0.48
0.47
-0.17
200
0.0193
0.20
-0.17
-0.53
0.43
-0.17
202.5
0.0192
0.20
-0.17
-0.58
0.38
-0.16
205
0.0188
0.19
-0.16
-0.63
0.33
-0.15
207.5
0.0181
0.18
-0.15
-0.67
0.29
-0.14
210
0.0172
0.17
-0.14
-0.72
0.25
-0.13
212.5
0.0160
0.16
-0.13
-0.76
0.21
-0.12
215
0.0148
0.15
-0.12
-0.80
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
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.