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 — 335 — is the max pain price.
Open interest by strike · Fri, Feb 19
■ calls (up)■ puts (down)CB 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 ≈ 21.3% · 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
0.84
-0.04
320
0.0052
0.50
-0.05
-0.17
0.81
-0.05
325
0.0059
0.55
-0.05
-0.19
0.78
-0.05
330
0.0065
0.59
-0.06
-0.22
0.75
-0.06
335
0.0072
0.64
-0.06
-0.26
0.71
-0.06
340
0.0078
0.69
-0.07
-0.30
0.67
-0.06
345
0.0084
0.73
-0.07
-0.34
0.63
-0.07
350
0.0090
0.76
-0.07
-0.39
0.58
-0.07
355
0.0094
0.78
-0.07
-0.43
0.54
-0.07
360
0.0097
0.80
-0.07
-0.49
0.49
-0.07
365
0.0098
0.80
-0.07
-0.54
0.44
-0.07
370
0.0098
0.79
-0.07
-0.59
0.35
-0.06
380
0.0093
0.74
-0.07
-0.69
0.31
-0.06
385
0.0088
0.71
-0.06
-0.74
0.27
-0.06
390
0.0083
0.67
-0.06
-0.78
0.20
-0.05
400
0.0070
0.57
-0.05
-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 42 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.