Event risk before this expiration:FOMC decision Wed, Sep 16 · Jobs report Fri, Oct 2 — 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 — 95 — is the max pain price.
Open interest by strike · Fri, Oct 2
■ calls (up)■ puts (down)BIDU open contracts per strike for Fri, Oct 2.
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, Oct 2
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Oct 2
— call IV— put IVATM ≈ 38.7% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Oct 2
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, Oct 2
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.81
-0.05
85
0.0327
0.06
-0.06
-0.19
0.77
-0.06
86
0.0361
0.07
-0.06
-0.23
0.73
-0.07
87
0.0392
0.07
-0.07
-0.27
0.69
-0.07
88
0.0418
0.08
-0.07
-0.32
0.64
-0.08
89
0.0438
0.08
-0.08
-0.36
0.60
-0.08
90
0.0452
0.09
-0.08
-0.41
0.55
-0.08
91
0.0460
0.09
-0.08
-0.45
0.50
-0.08
92
0.0461
0.09
-0.08
-0.50
0.46
-0.08
93
0.0456
0.09
-0.08
-0.55
0.41
-0.08
94
0.0445
0.09
-0.08
-0.59
0.37
-0.08
95
0.0430
0.08
-0.08
-0.63
0.34
-0.08
96
0.0410
0.08
-0.08
-0.67
0.30
-0.07
97
0.0388
0.08
-0.07
-0.71
0.27
-0.07
98
0.0363
0.07
-0.07
-0.74
0.24
-0.07
99
0.0338
0.07
-0.07
-0.77
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 48 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.