■ 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 — 180 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)CAMT open contracts per strike for Fri, Nov 20.
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, Nov 20
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Nov 20
— call IV— put IVATM ≈ 76.7% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Nov 20
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, Nov 20
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.77
-0.09
140
0.0041
0.27
-0.10
-0.23
0.74
-0.10
145
0.0044
0.29
-0.11
-0.25
0.72
-0.11
150
0.0047
0.30
-0.12
-0.28
0.69
-0.11
155
0.0049
0.32
-0.12
-0.30
0.66
-0.12
160
0.0051
0.33
-0.12
-0.33
0.64
-0.12
165
0.0053
0.34
-0.13
-0.36
0.61
-0.13
170
0.0054
0.35
-0.13
-0.39
0.58
-0.13
175
0.0055
0.35
-0.13
-0.42
0.55
-0.13
180
0.0056
0.36
-0.13
-0.45
0.53
-0.13
185
0.0057
0.36
-0.13
-0.47
0.50
-0.13
190
0.0057
0.36
-0.13
-0.50
0.47
-0.13
195
0.0057
0.36
-0.13
-0.53
0.45
-0.13
200
0.0057
0.36
-0.13
-0.55
0.40
-0.13
210
0.0055
0.35
-0.12
-0.60
0.36
-0.13
220
0.0053
0.34
-0.12
-0.65
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 40 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.