Event risk before this expiration:Jobs report Fri, Aug 7 · CPI release Wed, Aug 12 — 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 — 13 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)RUN 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 ≈ 102.7% · 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
0.99
-0.00
5
0.0098
0.00
-0.00
-0.01
0.97
-0.01
6
0.0256
0.00
-0.01
-0.03
0.92
-0.01
7
0.0570
0.00
-0.01
-0.08
0.83
-0.01
8
0.1026
0.01
-0.01
-0.18
0.76
-0.02
8.5
0.1259
0.01
-0.02
-0.24
0.69
-0.02
9
0.1453
0.01
-0.02
-0.32
0.61
-0.02
9.5
0.1585
0.01
-0.02
-0.40
0.52
-0.02
10
0.1642
0.01
-0.02
-0.48
0.45
-0.02
10.5
0.1627
0.01
-0.02
-0.56
0.37
-0.02
11
0.1553
0.01
-0.02
-0.63
0.31
-0.02
11.5
0.1438
0.01
-0.02
-0.69
0.26
-0.02
12
0.1299
0.01
-0.02
-0.75
0.21
-0.02
12.5
0.1151
0.01
-0.02
-0.80
0.17
-0.01
13
0.1004
0.01
-0.01
-0.84
0.14
-0.01
13.5
0.0866
0.01
-0.01
-0.87
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 39 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.