Event risk before this expiration:FOMC decision Wed, Oct 28 · Jobs report Fri, Nov 6 · CPI release Tue, Nov 10 · Jobs report Fri, Dec 4 · FOMC decision Wed, Dec 9 · CPI release Thu, Dec 10 — macro releases historically overwhelm pinning effects; max pain reads weakest in event weeks.
■ 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 — 660 — is the max pain price.
Open interest by strike · Fri, Jan 15
■ calls (up)■ puts (down)MEDP open contracts per strike for Fri, Jan 15.
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, Jan 15
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Jan 15
— call IV— put IVATM ≈ 33.4% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Jan 15
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, Jan 15
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.85
-0.16
580
0.0020
0.75
-0.17
-0.15
0.83
-0.17
590
0.0022
0.82
-0.18
-0.17
0.80
-0.18
600
0.0024
0.89
-0.20
-0.20
0.78
-0.20
610
0.0026
0.95
-0.21
-0.23
0.75
-0.21
620
0.0028
1.02
-0.22
-0.25
0.69
-0.23
640
0.0032
1.13
-0.24
-0.32
0.62
-0.25
660
0.0035
1.22
-0.26
-0.39
0.54
-0.26
680
0.0037
1.26
-0.26
-0.46
0.47
-0.26
700
0.0038
1.27
-0.26
-0.54
0.40
-0.25
720
0.0037
1.23
-0.25
-0.62
0.33
-0.23
740
0.0035
1.16
-0.24
-0.69
0.27
-0.21
760
0.0032
1.06
-0.22
-0.75
0.22
-0.19
780
0.0028
0.94
-0.20
-0.81
0.17
-0.16
800
0.0024
0.82
-0.17
-0.86
0.14
-0.14
820
0.0021
0.70
-0.15
-0.90
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.