■ 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, Sep 25
■ calls (up)■ puts (down)BIDU open contracts per strike for Fri, Sep 25.
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 25
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Sep 25
— call IV— put IVATM ≈ 41.2% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Sep 25
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 25
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.86
-0.05
85
0.0339
0.04
-0.05
-0.14
0.82
-0.06
86
0.0399
0.05
-0.06
-0.18
0.77
-0.07
87
0.0456
0.05
-0.07
-0.23
0.72
-0.08
88
0.0505
0.06
-0.08
-0.28
0.67
-0.09
89
0.0544
0.07
-0.09
-0.34
0.61
-0.09
90
0.0571
0.07
-0.09
-0.39
0.55
-0.10
91
0.0585
0.07
-0.10
-0.45
0.49
-0.10
92
0.0586
0.07
-0.10
-0.51
0.44
-0.10
93
0.0574
0.07
-0.10
-0.57
0.38
-0.10
94
0.0551
0.07
-0.10
-0.62
0.33
-0.09
95
0.0520
0.07
-0.09
-0.67
0.29
-0.09
96
0.0482
0.06
-0.09
-0.72
0.24
-0.08
97
0.0441
0.06
-0.08
-0.76
0.21
-0.07
98
0.0398
0.05
-0.07
-0.80
0.18
-0.07
99
0.0355
0.05
-0.07
-0.83
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 54 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.