■ 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 — 670 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)MDY 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 ≈ 14.3% · 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
0.88
-0.12
675
0.0052
0.44
-0.13
-0.13
0.86
-0.13
680
0.0060
0.47
-0.14
-0.15
0.83
-0.14
685
0.0070
0.55
-0.15
-0.18
0.76
-0.16
695
0.0091
0.65
-0.17
-0.25
0.72
-0.17
700
0.0103
0.72
-0.18
-0.30
0.67
-0.18
705
0.0115
0.78
-0.18
-0.35
0.61
-0.18
710
0.0125
0.81
-0.19
-0.41
0.55
-0.18
715
0.0133
0.83
-0.18
-0.47
0.48
-0.18
720
0.0137
0.84
-0.18
-0.54
0.41
-0.17
725
0.0137
0.82
-0.17
-0.61
0.35
-0.16
730
0.0131
0.78
-0.16
-0.67
0.28
-0.15
735
0.0121
0.72
-0.14
-0.73
0.23
-0.13
740
0.0108
0.65
-0.13
-0.79
0.18
-0.12
745
0.0093
0.56
-0.11
-0.84
0.14
-0.10
750
0.0079
0.48
-0.10
-0.88
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 34 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.