Event risk before this expiration: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 — 640 — is the max pain price.
Open interest by strike · Fri, Feb 19
■ calls (up)■ puts (down)CASY 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 ≈ 36.7% · 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
0.77
-0.15
590
0.0021
1.12
-0.18
-0.23
0.75
-0.16
600
0.0022
1.19
-0.19
-0.25
0.73
-0.17
610
0.0024
1.24
-0.20
-0.28
0.70
-0.18
620
0.0025
1.30
-0.21
-0.30
0.67
-0.19
630
0.0026
1.35
-0.21
-0.33
0.65
-0.20
640
0.0027
1.39
-0.22
-0.36
0.59
-0.21
660
0.0028
1.45
-0.23
-0.41
0.53
-0.22
680
0.0029
1.48
-0.23
-0.47
0.48
-0.22
700
0.0029
1.49
-0.22
-0.53
0.42
-0.22
720
0.0029
1.46
-0.22
-0.59
0.37
-0.21
740
0.0028
1.41
-0.20
-0.65
0.34
-0.21
750
0.0027
1.38
-0.20
-0.67
0.32
-0.20
760
0.0026
1.34
-0.19
-0.70
0.30
-0.20
770
0.0026
1.30
-0.18
-0.72
0.28
-0.19
780
0.0025
1.25
-0.17
-0.75
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 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.