■ 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 — 150 — is the max pain price.
Open interest by strike · Fri, Sep 18
■ calls (up)■ puts (down)MTRN 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 ≈ 56.5% · 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
-0.09
230
0.0025
0.16
-0.10
-0.08
0.88
-0.12
240
0.0033
0.20
-0.13
-0.12
0.84
-0.15
250
0.0041
0.25
-0.16
-0.16
0.79
-0.18
260
0.0049
0.30
-0.19
-0.21
0.73
-0.21
270
0.0057
0.34
-0.22
-0.27
0.67
-0.23
280
0.0063
0.38
-0.24
-0.34
0.60
-0.25
290
0.0067
0.40
-0.25
-0.40
0.53
-0.26
300
0.0069
0.41
-0.26
-0.47
0.40
-0.25
320
0.0066
0.40
-0.25
-0.60
0.34
-0.24
330
0.0063
0.38
-0.24
-0.66
0.29
-0.22
340
0.0058
0.35
-0.22
-0.72
0.24
-0.20
350
0.0053
0.32
-0.20
-0.77
0.20
-0.18
360
0.0048
0.29
-0.18
-0.81
0.17
-0.16
370
0.0042
0.26
-0.16
-0.84
0.09
-0.11
400
0.0027
0.17
-0.10
-0.92
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 39 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.