■ 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 — 110 — is the max pain price.
Open interest by strike · Fri, Dec 17
■ calls (up)■ puts (down)SIMO open contracts per strike for Fri, Dec 17.
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, Dec 17
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Dec 17
— call IV— put IVATM ≈ 91.6% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Dec 17
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, Dec 17
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.81
-0.06
200
0.0009
0.85
-0.08
-0.19
0.80
-0.07
210
0.0010
0.88
-0.08
-0.21
0.78
-0.07
220
0.0010
0.92
-0.08
-0.22
0.77
-0.07
230
0.0010
0.94
-0.09
-0.23
0.76
-0.08
240
0.0011
0.97
-0.09
-0.25
0.75
-0.08
250
0.0011
1.00
-0.09
-0.26
0.73
-0.08
260
0.0011
1.02
-0.09
-0.27
0.72
-0.09
270
0.0012
1.04
-0.09
-0.28
0.71
-0.09
280
0.0012
1.07
-0.09
-0.30
0.69
-0.09
300
0.0012
1.10
-0.10
-0.32
0.68
-0.09
310
0.0012
1.12
-0.10
-0.33
0.65
-0.10
330
0.0013
1.15
-0.10
-0.36
0.64
-0.10
340
0.0013
1.16
-0.10
-0.37
0.63
-0.10
350
0.0013
1.17
-0.10
-0.38
0.62
-0.10
360
0.0013
1.18
-0.10
-0.39
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 29 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.