■ 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 — 330 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)MAR open contracts per strike for Fri, Sep 18.
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, Sep 18
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Sep 18
— call IV— put IVATM ≈ 23.5% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Sep 18
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, Sep 18
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.96
-0.05
290
0.0019
0.09
-0.05
-0.04
0.95
-0.05
300
0.0026
0.11
-0.06
-0.05
0.94
-0.06
310
0.0036
0.13
-0.06
-0.06
0.91
-0.07
320
0.0054
0.17
-0.07
-0.09
0.86
-0.09
330
0.0083
0.24
-0.10
-0.14
0.76
-0.12
340
0.0119
0.33
-0.13
-0.24
0.63
-0.15
350
0.0150
0.40
-0.15
-0.38
0.47
-0.15
360
0.0161
0.42
-0.16
-0.54
0.32
-0.13
370
0.0146
0.38
-0.14
-0.70
0.19
-0.10
380
0.0112
0.29
-0.11
-0.83
0.11
-0.07
390
0.0076
0.20
-0.07
-0.92
0.06
-0.04
400
0.0047
0.13
-0.04
-0.97
0.04
-0.03
410
0.0030
0.09
-0.01
-0.99
0.03
-0.03
420
0.0021
0.07
-0.01
-0.99
0.02
-0.03
430
0.0016
0.06
-0.00
-0.99
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 46 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.