■ 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 — 280 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)ONTO 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 ≈ 60.5% · 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
0.99
-0.03
210
0.0005
0.01
-0.03
-0.01
0.99
-0.06
220
0.0010
0.01
-0.06
-0.01
0.97
-0.11
230
0.0020
0.02
-0.11
-0.03
0.95
-0.20
240
0.0037
0.04
-0.20
-0.05
0.90
-0.33
250
0.0065
0.07
-0.33
-0.10
0.82
-0.49
260
0.0102
0.10
-0.49
-0.18
0.69
-0.64
270
0.0140
0.14
-0.64
-0.31
0.54
-0.72
280
0.0162
0.15
-0.72
-0.46
0.38
-0.68
290
0.0156
0.15
-0.69
-0.62
0.25
-0.56
300
0.0128
0.12
-0.56
-0.76
0.15
-0.41
310
0.0093
0.09
-0.41
-0.85
0.09
-0.28
320
0.0062
0.06
-0.28
-0.92
0.05
-0.18
330
0.0039
0.04
-0.18
-0.95
0.03
-0.11
340
0.0024
0.03
-0.11
-0.97
0.02
-0.07
350
0.0015
0.02
-0.07
-0.98
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 53 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.