■ 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 — 290 — is the max pain price.
Open interest by strike · Fri, Jan 15
■ calls (up)■ puts (down)GPI 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 ≈ 46.7% · 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
0.90
-0.04
180
0.0019
0.30
-0.05
-0.10
0.89
-0.04
185
0.0021
0.32
-0.05
-0.11
0.87
-0.05
190
0.0023
0.35
-0.06
-0.12
0.81
-0.06
210
0.0032
0.46
-0.07
-0.19
0.73
-0.08
230
0.0040
0.56
-0.09
-0.27
0.68
-0.08
240
0.0044
0.60
-0.09
-0.32
0.64
-0.09
250
0.0047
0.64
-0.09
-0.36
0.58
-0.09
260
0.0050
0.66
-0.10
-0.42
0.53
-0.09
270
0.0052
0.68
-0.10
-0.47
0.48
-0.09
280
0.0052
0.68
-0.10
-0.52
0.43
-0.09
290
0.0052
0.67
-0.09
-0.57
0.39
-0.09
300
0.0051
0.65
-0.09
-0.62
0.34
-0.09
310
0.0049
0.63
-0.08
-0.67
0.30
-0.08
320
0.0047
0.59
-0.08
-0.71
0.23
-0.07
340
0.0041
0.52
-0.07
-0.79
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 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.