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 — 70 — is the max pain price.
Open interest by strike · Fri, Mar 19
■ calls (up)■ puts (down)WMB open contracts per strike for Fri, Mar 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, Mar 19
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Mar 19
— call IV— put IVATM ≈ 29.7% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Mar 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, Mar 19
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.99
—
40
0.0008
0.01
-0.00
-0.01
0.99
—
45
0.0019
0.01
-0.00
-0.02
0.97
-0.00
50
0.0040
0.03
-0.00
-0.03
0.94
-0.00
55
0.0076
0.05
-0.01
-0.07
0.88
-0.01
60
0.0132
0.09
-0.01
-0.13
0.79
-0.01
65
0.0201
0.13
-0.01
-0.22
0.67
-0.02
70
0.0265
0.17
-0.02
-0.34
0.53
-0.02
75
0.0296
0.18
-0.02
-0.48
0.39
-0.02
80
0.0286
0.17
-0.02
-0.63
0.27
-0.01
85
0.0246
0.15
-0.01
-0.75
0.18
-0.01
90
0.0192
0.12
-0.01
-0.84
0.11
-0.01
95
0.0141
0.09
-0.01
-0.91
0.08
-0.01
100
0.0102
0.07
-0.00
-0.94
0.04
-0.01
110
0.0058
0.04
-0.00
-0.98
0.04
-0.00
115
0.0046
0.04
-0.01
-0.99
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. 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.