■ 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 — 745 — is the max pain price.
Open interest by strike · Fri, Dec 17
■ calls (up)■ puts (down)MDY open contracts per strike for Fri, Dec 17.
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 17
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Dec 17
— call IV— put IVATM ≈ 19.3% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Dec 17
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 17
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.74
-0.04
660
0.0019
2.65
-0.06
-0.28
0.73
-0.04
665
0.0019
2.69
-0.06
-0.29
0.72
-0.04
670
0.0020
2.71
-0.06
-0.30
0.71
-0.05
675
0.0020
2.78
-0.06
-0.31
0.70
-0.05
680
0.0021
2.84
-0.06
-0.32
0.67
-0.05
695
0.0022
2.94
-0.06
-0.36
0.66
-0.05
700
0.0023
2.97
-0.06
-0.37
0.60
-0.05
725
0.0025
3.14
-0.07
-0.44
0.59
-0.05
730
0.0025
3.15
-0.07
-0.46
0.58
-0.05
735
0.0026
3.17
-0.07
-0.47
0.57
-0.05
740
0.0026
3.20
-0.07
-0.49
0.55
-0.05
745
0.0026
3.21
-0.07
-0.50
0.48
-0.05
775
0.0027
3.23
-0.07
-0.61
0.41
-0.05
800
0.0027
3.16
-0.07
-0.70
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 14 strikes around the money — all 35 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.