■ 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, Oct 16
■ calls (up)■ puts (down)VST open contracts per strike for Fri, Oct 16.
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, Oct 16
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 16
— call IV— put IVATM ≈ 45.1% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 16
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 16
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.95
-0.02
110
0.0039
0.07
-0.03
-0.05
0.92
-0.03
115
0.0054
0.09
-0.03
-0.08
0.89
-0.04
120
0.0072
0.12
-0.04
-0.12
0.84
-0.05
125
0.0092
0.14
-0.05
-0.16
0.79
-0.06
130
0.0112
0.17
-0.06
-0.22
0.72
-0.07
135
0.0130
0.20
-0.07
-0.29
0.65
-0.08
140
0.0144
0.22
-0.08
-0.36
0.57
-0.08
145
0.0152
0.23
-0.09
-0.44
0.50
-0.09
150
0.0154
0.24
-0.09
-0.51
0.42
-0.08
155
0.0151
0.23
-0.09
-0.59
0.36
-0.08
160
0.0143
0.22
-0.08
-0.66
0.30
-0.07
165
0.0131
0.20
-0.07
-0.72
0.24
-0.07
170
0.0118
0.19
-0.07
-0.77
0.20
-0.06
175
0.0104
0.17
-0.06
-0.82
0.17
-0.06
180
0.0091
0.15
-0.06
-0.86
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 33 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.