Event risk before this expiration:FOMC decision Wed, Oct 28 · Jobs report Fri, Nov 6 · CPI release Tue, Nov 10 · Jobs report Fri, Dec 4 · FOMC decision Wed, Dec 9 · CPI release Thu, Dec 10 — macro releases historically overwhelm pinning effects; max pain reads weakest in event weeks.
■ 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 — 145 — is the max pain price.
Open interest by strike · Fri, Feb 19
■ calls (up)■ puts (down)CHRW open contracts per strike for Fri, Feb 19.
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, Feb 19
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Feb 19
— call IV— put IVATM ≈ 41.4% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Feb 19
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, Feb 19
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.89
-0.03
105
0.0050
0.15
-0.03
-0.11
0.86
-0.03
110
0.0061
0.18
-0.04
-0.14
0.82
-0.04
115
0.0073
0.20
-0.04
-0.18
0.78
-0.04
120
0.0085
0.23
-0.04
-0.22
0.73
-0.04
125
0.0097
0.26
-0.05
-0.27
0.68
-0.05
130
0.0108
0.28
-0.05
-0.33
0.62
-0.05
135
0.0117
0.30
-0.05
-0.39
0.56
-0.05
140
0.0123
0.31
-0.06
-0.45
0.50
-0.05
145
0.0126
0.31
-0.06
-0.51
0.44
-0.05
150
0.0125
0.31
-0.05
-0.57
0.38
-0.05
155
0.0121
0.30
-0.05
-0.63
0.33
-0.05
160
0.0115
0.28
-0.05
-0.69
0.28
-0.04
165
0.0107
0.27
-0.04
-0.74
0.24
-0.04
170
0.0099
0.25
-0.04
-0.78
0.21
-0.04
175
0.0089
0.23
-0.04
-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 34 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.