■ 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 — 160 — is the max pain price.
Open interest by strike · Fri, Jul 31
■ calls (up)■ puts (down)COIN 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 ≈ 133.9% · 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
0.83
-0.85
150
0.0119
0.04
-0.85
-0.17
0.80
-0.98
152.5
0.0134
0.04
-0.98
-0.20
0.76
-1.10
155
0.0149
0.05
-1.11
-0.24
0.72
-1.22
157.5
0.0163
0.05
-1.22
-0.28
0.68
-1.32
160
0.0174
0.06
-1.32
-0.32
0.63
-1.40
162.5
0.0183
0.06
-1.40
-0.37
0.58
-1.45
165
0.0190
0.06
-1.46
-0.42
0.54
-1.48
167.5
0.0194
0.06
-1.48
-0.47
0.49
-1.48
170
0.0195
0.06
-1.48
-0.52
0.44
-1.45
172.5
0.0193
0.06
-1.45
-0.56
0.39
-1.40
175
0.0189
0.06
-1.40
-0.61
0.35
-1.32
177.5
0.0182
0.06
-1.33
-0.65
0.30
-1.23
180
0.0173
0.05
-1.24
-0.70
0.27
-1.13
182.5
0.0163
0.05
-1.14
-0.74
0.23
-1.03
185
0.0150
0.05
-1.03
-0.77
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 59 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.