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 — 22.28 — is the max pain price.
Open interest by strike · Fri, Jan 15
■ calls (up)■ puts (down)HST 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 ≈ 38.5% · 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
0.98
-0.00
12.13
0.0043
0.01
-0.00
-0.02
0.98
-0.00
14.13
0.0072
0.01
-0.00
-0.03
0.96
-0.00
16.13
0.0123
0.01
-0.00
-0.04
0.95
-0.00
17.28
0.0170
0.01
-0.00
-0.06
0.92
-0.00
19.13
0.0295
0.02
-0.01
-0.09
0.86
-0.01
21.13
0.0552
0.03
-0.01
-0.15
0.80
-0.01
22.28
0.0784
0.03
-0.01
-0.22
0.62
-0.01
24.13
0.1179
0.04
-0.01
-0.40
0.38
-0.01
26.13
0.1153
0.04
-0.01
-0.63
0.28
-0.01
27.28
0.0962
0.04
-0.01
-0.73
0.18
-0.01
29.13
0.0668
0.03
-0.01
-0.83
0.14
-0.01
30.28
0.0531
0.03
-0.01
-0.86
0.07
-0.00
34.13
0.0266
0.02
-0.01
-0.94
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 13 strikes around the money — all 15 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.