Event risk before this expiration:FOMC decision Wed, Oct 28 · Jobs report Fri, Nov 6 · CPI release Tue, Nov 10 — macro releases historically overwhelm pinning effects; max pain reads weakest in event weeks.
■ 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 — 240 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)DDOG 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 ≈ 85.8% · 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
0.84
-0.30
230
0.0037
0.18
-0.31
-0.16
0.82
-0.33
235
0.0040
0.19
-0.33
-0.18
0.80
-0.35
240
0.0044
0.21
-0.36
-0.20
0.74
-0.40
250
0.0050
0.24
-0.41
-0.26
0.69
-0.45
260
0.0056
0.26
-0.45
-0.31
0.62
-0.47
270
0.0060
0.28
-0.48
-0.38
0.59
-0.48
275
0.0061
0.29
-0.49
-0.41
0.56
-0.49
280
0.0062
0.29
-0.49
-0.44
0.50
-0.50
290
0.0063
0.29
-0.50
-0.50
0.44
-0.49
300
0.0063
0.29
-0.49
-0.56
0.38
-0.47
310
0.0061
0.28
-0.47
-0.62
0.33
-0.44
320
0.0058
0.27
-0.44
-0.68
0.27
-0.40
330
0.0054
0.25
-0.40
-0.73
0.23
-0.36
340
0.0050
0.22
-0.36
-0.77
0.19
-0.32
350
0.0044
0.20
-0.32
-0.81
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 43 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.