■ 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 — 175 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)SIMO 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 ≈ 79.0% · 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
0.92
-0.15
200
0.0023
0.13
-0.16
-0.08
0.89
-0.19
210
0.0029
0.16
-0.20
-0.12
0.85
-0.23
220
0.0036
0.19
-0.24
-0.15
0.80
-0.28
230
0.0043
0.23
-0.28
-0.20
0.75
-0.32
240
0.0049
0.26
-0.32
-0.25
0.69
-0.35
250
0.0054
0.28
-0.36
-0.31
0.63
-0.38
260
0.0058
0.30
-0.38
-0.37
0.57
-0.39
270
0.0061
0.32
-0.40
-0.43
0.51
-0.40
280
0.0062
0.32
-0.41
-0.49
0.45
-0.40
290
0.0061
0.32
-0.40
-0.55
0.40
-0.39
300
0.0059
0.31
-0.39
-0.61
0.35
-0.38
310
0.0056
0.30
-0.38
-0.66
0.30
-0.36
320
0.0053
0.28
-0.36
-0.70
0.26
-0.34
330
0.0049
0.26
-0.34
-0.74
0.23
-0.31
340
0.0045
0.24
-0.31
-0.78
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.