■ 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 — 19 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)RIOT 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 ≈ 103.0% · 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
0.90
-0.01
13
0.0210
0.01
-0.01
-0.10
0.87
-0.02
14
0.0261
0.02
-0.02
-0.13
0.83
-0.02
15
0.0314
0.02
-0.02
-0.17
0.79
-0.02
16
0.0366
0.02
-0.02
-0.21
0.74
-0.03
17
0.0414
0.02
-0.03
-0.26
0.69
-0.03
18
0.0454
0.03
-0.03
-0.31
0.64
-0.03
19
0.0486
0.03
-0.03
-0.36
0.59
-0.03
20
0.0508
0.03
-0.03
-0.41
0.54
-0.03
21
0.0521
0.03
-0.03
-0.46
0.49
-0.03
22
0.0524
0.03
-0.03
-0.51
0.45
-0.03
23
0.0520
0.03
-0.03
-0.56
0.40
-0.03
24
0.0509
0.03
-0.03
-0.60
0.36
-0.03
25
0.0492
0.03
-0.03
-0.65
0.32
-0.03
26
0.0471
0.03
-0.03
-0.68
0.29
-0.03
27
0.0447
0.03
-0.03
-0.72
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 45 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.