■ 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 — 100 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)BIDU open contracts per strike for Fri, Sep 18.
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, Sep 18
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Sep 18
— call IV— put IVATM ≈ 34.8% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Sep 18
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, Sep 18
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.85
-0.07
87
0.0512
0.03
-0.07
-0.15
0.83
-0.08
87.5
0.0577
0.03
-0.08
-0.17
0.80
-0.09
88
0.0640
0.04
-0.09
-0.21
0.76
-0.10
88.5
0.0700
0.04
-0.10
-0.24
0.72
-0.11
89
0.0755
0.04
-0.11
-0.28
0.64
-0.12
90
0.0841
0.05
-0.12
-0.36
0.55
-0.13
91
0.0884
0.05
-0.13
-0.45
0.47
-0.13
92
0.0879
0.05
-0.13
-0.54
0.38
-0.13
93
0.0831
0.05
-0.13
-0.62
0.31
-0.12
94
0.0754
0.04
-0.12
-0.70
0.24
-0.11
95
0.0659
0.04
-0.11
-0.76
0.19
-0.09
96
0.0559
0.04
-0.10
-0.82
0.15
-0.08
97
0.0464
0.03
-0.08
-0.86
0.12
-0.07
98
0.0380
0.03
-0.07
-0.89
0.09
-0.06
99
0.0309
0.02
-0.06
-0.92
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 60 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.