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 — 21 — is the max pain price.
Open interest by strike · Fri, Aug 28
■ calls (up)■ puts (down)RIOT open contracts per strike for Fri, Aug 28.
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 28
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Aug 28
— call IV— put IVATM ≈ 108.1% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Aug 28
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 28
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.94
-0.01
13
0.0191
0.01
-0.01
-0.07
0.91
-0.02
14
0.0259
0.01
-0.02
-0.09
0.87
-0.02
15
0.0338
0.01
-0.02
-0.13
0.82
-0.03
16
0.0422
0.01
-0.03
-0.18
0.77
-0.03
17
0.0502
0.02
-0.03
-0.23
0.71
-0.04
18
0.0570
0.02
-0.04
-0.29
0.64
-0.04
19
0.0622
0.02
-0.04
-0.36
0.58
-0.04
20
0.0655
0.02
-0.04
-0.42
0.51
-0.04
21
0.0670
0.02
-0.04
-0.49
0.45
-0.04
22
0.0666
0.02
-0.04
-0.55
0.39
-0.04
23
0.0647
0.02
-0.04
-0.61
0.34
-0.04
24
0.0615
0.02
-0.04
-0.67
0.29
-0.04
25
0.0574
0.02
-0.04
-0.72
0.24
-0.03
26
0.0527
0.02
-0.03
-0.76
0.21
-0.03
27
0.0478
0.02
-0.03
-0.80
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 27 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.