■ 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 — 10 — is the max pain price.
Open interest by strike · Fri, Jan 21
■ calls (up)■ puts (down)OMER open contracts per strike for Fri, Jan 21.
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 21
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Jan 21
— call IV— put IVATM ≈ 81.6% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Jan 21
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 21
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.97
-0.00
3
0.0021
0.01
-0.00
-0.03
0.95
-0.00
4
0.0032
0.02
-0.00
-0.04
0.94
-0.00
5
0.0044
0.02
-0.00
-0.05
0.91
-0.00
7
0.0071
0.03
-0.00
-0.08
0.86
-0.00
10
0.0120
0.04
-0.00
-0.14
0.82
-0.00
12
0.0154
0.05
-0.00
-0.18
0.75
-0.00
15
0.0196
0.07
-0.01
-0.25
0.70
-0.00
17
0.0216
0.07
-0.01
-0.30
0.64
-0.01
20
0.0235
0.08
-0.01
-0.37
0.60
-0.01
22
0.0242
0.08
-0.01
-0.42
0.55
-0.01
25
0.0246
0.08
-0.01
-0.47
0.52
-0.01
27
0.0245
0.08
-0.01
-0.51
0.47
-0.01
30
0.0242
0.08
-0.01
-0.56
0.42
-0.01
35
0.0234
0.08
-0.01
-0.63
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 14 strikes around the money — all 16 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.