■ 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 — 750 — is the max pain price.
Open interest by strike · Fri, Dec 18
■ calls (up)■ puts (down)ARGX open contracts per strike for Fri, Dec 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, Dec 18
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Dec 18
— call IV— put IVATM ≈ 37.5% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Dec 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, Dec 18
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.74
-0.28
900
0.0014
1.90
-0.30
-0.27
0.72
-0.29
910
0.0015
1.95
-0.31
-0.28
0.70
-0.30
920
0.0015
2.00
-0.32
-0.30
0.69
-0.30
930
0.0016
2.05
-0.32
-0.32
0.67
-0.31
940
0.0016
2.10
-0.33
-0.34
0.64
-0.32
960
0.0017
2.17
-0.34
-0.37
0.60
-0.33
980
0.0018
2.24
-0.35
-0.41
0.57
-0.34
1000
0.0018
2.28
-0.35
-0.44
0.53
-0.34
1020
0.0018
2.31
-0.35
-0.48
0.49
-0.34
1040
0.0018
2.31
-0.35
-0.52
0.46
-0.34
1060
0.0018
2.30
-0.35
-0.56
0.43
-0.34
1080
0.0018
2.27
-0.35
-0.59
0.39
-0.33
1100
0.0018
2.23
-0.34
-0.63
0.36
-0.32
1120
0.0017
2.17
-0.33
-0.66
0.33
-0.31
1140
0.0017
2.10
-0.32
-0.69
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 42 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.