■ 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 — 55 — is the max pain price.
Open interest by strike · Fri, Aug 21
■ calls (up)■ puts (down)FBTC 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 ≈ 24.1% · 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
0.90
-0.04
51
0.0565
0.01
-0.04
-0.10
0.88
-0.04
51.5
0.0687
0.01
-0.04
-0.12
0.85
-0.04
52
0.0837
0.02
-0.04
-0.15
0.82
-0.05
52.5
0.1019
0.02
-0.05
-0.18
0.77
-0.05
53
0.1234
0.02
-0.05
-0.23
0.71
-0.06
53.5
0.1474
0.03
-0.06
-0.29
0.64
-0.06
54
0.1713
0.03
-0.06
-0.36
0.56
-0.06
54.5
0.1899
0.03
-0.06
-0.45
0.46
-0.06
55
0.1966
0.03
-0.06
-0.55
0.36
-0.06
55.5
0.1875
0.03
-0.06
-0.64
0.28
-0.05
56
0.1657
0.03
-0.05
-0.73
0.21
-0.04
56.5
0.1384
0.02
-0.04
-0.80
0.16
-0.04
57
0.1120
0.02
-0.04
-0.85
0.12
-0.03
57.5
0.0894
0.02
-0.03
-0.89
0.09
-0.03
58
0.0711
0.01
-0.03
-0.91
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 38 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.