■ 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 — 20 — is the max pain price.
Open interest by strike · Fri, Jan 15
■ calls (up)■ puts (down)BILI open contracts per strike for Fri, Jan 15.
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, Jan 15
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Jan 15
— call IV— put IVATM ≈ 52.4% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Jan 15
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, Jan 15
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.97
-0.00
8
0.0076
0.01
-0.00
-0.03
0.95
-0.00
10
0.0153
0.01
-0.00
-0.05
0.89
-0.00
12
0.0292
0.02
-0.00
-0.11
0.85
-0.01
13
0.0377
0.03
-0.01
-0.15
0.80
-0.01
14
0.0460
0.03
-0.01
-0.20
0.74
-0.01
15
0.0534
0.04
-0.01
-0.26
0.68
-0.01
16
0.0592
0.04
-0.01
-0.33
0.61
-0.01
17
0.0632
0.04
-0.01
-0.39
0.55
-0.01
18
0.0653
0.04
-0.01
-0.46
0.49
-0.01
19
0.0655
0.04
-0.01
-0.52
0.43
-0.01
20
0.0642
0.04
-0.01
-0.58
0.38
-0.01
21
0.0617
0.04
-0.01
-0.64
0.33
-0.01
22
0.0584
0.04
-0.01
-0.69
0.29
-0.01
23
0.0546
0.04
-0.01
-0.73
0.26
-0.01
24
0.0507
0.04
-0.01
-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 31 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.