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 — 95 — is the max pain price.
Open interest by strike · Fri, Feb 19
■ calls (up)■ puts (down)ZM 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 ≈ 42.8% · 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
-0.03
77.5
0.0097
0.13
-0.03
-0.16
0.81
-0.03
80
0.0109
0.15
-0.03
-0.19
0.78
-0.03
82.5
0.0121
0.16
-0.03
-0.22
0.75
-0.03
85
0.0132
0.18
-0.03
-0.26
0.71
-0.04
87.5
0.0142
0.19
-0.04
-0.30
0.67
-0.04
90
0.0150
0.20
-0.04
-0.34
0.63
-0.04
92.5
0.0157
0.21
-0.04
-0.38
0.59
-0.04
95
0.0162
0.21
-0.04
-0.42
0.55
-0.04
97.5
0.0165
0.22
-0.04
-0.46
0.51
-0.04
100
0.0167
0.22
-0.04
-0.51
0.43
-0.04
105
0.0164
0.21
-0.04
-0.59
0.36
-0.04
110
0.0156
0.20
-0.04
-0.66
0.29
-0.04
115
0.0144
0.19
-0.04
-0.73
0.24
-0.03
120
0.0129
0.17
-0.04
-0.79
0.19
-0.03
125
0.0114
0.15
-0.03
-0.84
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 29 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.