■ 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 — 12 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)SLS open contracts per strike for Fri, Aug 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, Aug 21
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Aug 21
— call IV— put IVATM ≈ 103.8% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Aug 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, Aug 21
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.96
-0.01
9.5
0.0411
0.00
-0.01
-0.05
0.94
-0.02
10
0.0606
0.00
-0.02
-0.07
0.91
-0.03
10.5
0.0878
0.00
-0.03
-0.10
0.86
-0.03
11
0.1232
0.00
-0.03
-0.15
0.79
-0.04
11.5
0.1641
0.01
-0.04
-0.22
0.69
-0.05
12
0.2014
0.01
-0.05
-0.31
0.58
-0.05
12.5
0.2232
0.01
-0.05
-0.42
0.47
-0.05
13
0.2225
0.01
-0.05
-0.53
0.37
-0.05
13.5
0.2041
0.01
-0.05
-0.63
0.29
-0.05
14
0.1774
0.01
-0.05
-0.71
0.23
-0.04
14.5
0.1499
0.01
-0.04
-0.77
0.18
-0.04
15
0.1250
0.01
-0.04
-0.81
0.15
-0.04
15.5
0.1039
0.00
-0.04
-0.85
0.12
-0.03
16
0.0866
0.00
-0.03
-0.88
0.10
-0.03
16.5
0.0724
0.00
-0.03
-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 43 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.