■ 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 — 380 — is the max pain price.
Open interest by strike · Tue, Oct 13
■ calls (up)■ puts (down)GLD open contracts per strike for Tue, Oct 13.
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 · Tue, Oct 13
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Tue, Oct 13
— call IV— put IVATM ≈ 18.1% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Tue, Oct 13
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 · Tue, Oct 13
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.77
-0.23
370
0.0330
0.15
-0.23
-0.23
0.70
-0.26
372
0.0385
0.17
-0.27
-0.30
0.67
-0.28
373
0.0408
0.18
-0.28
-0.34
0.62
-0.29
374
0.0427
0.18
-0.29
-0.38
0.58
-0.30
375
0.0441
0.19
-0.30
-0.42
0.54
-0.30
376
0.0450
0.19
-0.30
-0.47
0.49
-0.30
377
0.0453
0.19
-0.30
-0.51
0.45
-0.30
378
0.0450
0.19
-0.30
-0.56
0.40
-0.29
379
0.0441
0.19
-0.29
-0.60
0.36
-0.28
380
0.0426
0.18
-0.28
-0.65
0.32
-0.27
381
0.0406
0.17
-0.27
-0.69
0.28
-0.25
382
0.0382
0.16
-0.25
-0.73
0.24
-0.23
383
0.0354
0.15
-0.24
-0.76
0.21
-0.21
384
0.0325
0.14
-0.22
-0.80
0.18
-0.20
385
0.0295
0.13
-0.21
-0.82
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 52 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.