■ 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 — 200 — is the max pain price.
Open interest by strike · Fri, Dec 18
■ calls (up)■ puts (down)MATX open contracts per strike for Fri, Dec 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, Dec 18
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Dec 18
— call IV— put IVATM ≈ 35.5% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Dec 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, Dec 18
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.88
-0.04
170
0.0036
0.26
-0.04
-0.12
0.83
-0.05
180
0.0046
0.31
-0.05
-0.16
0.81
-0.05
185
0.0052
0.34
-0.05
-0.18
0.78
-0.05
190
0.0058
0.37
-0.06
-0.21
0.75
-0.06
195
0.0064
0.40
-0.06
-0.24
0.72
-0.06
200
0.0071
0.43
-0.06
-0.28
0.64
-0.07
210
0.0081
0.47
-0.07
-0.36
0.55
-0.07
220
0.0088
0.50
-0.07
-0.45
0.47
-0.07
230
0.0090
0.50
-0.07
-0.54
0.38
-0.07
240
0.0086
0.48
-0.07
-0.62
0.31
-0.06
250
0.0079
0.45
-0.06
-0.70
0.17
-0.05
280
0.0052
0.32
-0.04
-0.85
0.14
-0.04
290
0.0044
0.28
-0.04
-0.89
0.11
-0.04
300
0.0038
0.24
-0.04
-0.92
0.09
-0.03
310
0.0032
0.21
-0.03
-0.94
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 22 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.