■ 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 — 125 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)SHOP open contracts per strike for Fri, Sep 18.
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, Sep 18
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Sep 18
— call IV— put IVATM ≈ 42.6% · 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
0.70
-0.12
143
0.0210
0.13
-0.13
-0.30
0.68
-0.13
144
0.0217
0.14
-0.13
-0.32
0.66
-0.13
145
0.0224
0.14
-0.13
-0.34
0.64
-0.13
146
0.0230
0.14
-0.14
-0.37
0.61
-0.14
147
0.0235
0.14
-0.14
-0.39
0.59
-0.14
148
0.0239
0.15
-0.14
-0.41
0.56
-0.14
149
0.0243
0.15
-0.14
-0.44
0.54
-0.14
150
0.0245
0.15
-0.14
-0.46
0.48
-0.14
152.5
0.0246
0.15
-0.14
-0.53
0.42
-0.14
155
0.0241
0.15
-0.14
-0.59
0.36
-0.13
157.5
0.0230
0.14
-0.13
-0.64
0.31
-0.13
160
0.0216
0.13
-0.13
-0.69
0.26
-0.12
162.5
0.0199
0.12
-0.12
-0.74
0.22
-0.10
165
0.0180
0.11
-0.11
-0.79
0.18
-0.09
167.5
0.0161
0.10
-0.10
-0.82
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 54 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 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.