HowThe settle strike with the smallest total payout to option holders for the 2026-11-20 expiration, over 115 strikes carrying 15,406 open contracts. Open interest is published once a day, before the open, so it describes the previous session.
SourcePut open interest divided by call open interest
As ofCboe delayed snapshot Nov 8, 7:31 PM ET
How6,848 put contracts / 8,558 call contracts = 0.80 for the 2026-11-20 expiration. Open interest is published once a day, before the open, so it describes the previous session.
SourceNet gamma exposure from Cboe greeks and open interest
As ofCboe delayed snapshot Nov 8, 7:31 PM ET
HowOver every strike with open interest for the 2026-11-20 expiration: (call gamma × call OI minus put gamma × put OI) × 100 × spot² × 1%, summed. Calls count as positive and puts as negative, a convention about who holds the other side, not a measurement.
Event risk before this expiration: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 — 565 — is the max pain price.
Open interest by strike · Fri, Nov 20
■ calls (up)■ puts (down)LMT open contracts per strike for Fri, Nov 20. Showing the 60 largest of 115 strikes by open interest, 92.1% of the total.
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 ≈ 29.8% · 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
0.83
-0.33
535
0.0069
0.28
-0.33
-0.17
0.79
-0.37
540
0.0078
0.32
-0.37
-0.21
0.75
-0.41
545
0.0088
0.35
-0.41
-0.25
0.71
-0.44
550
0.0097
0.38
-0.44
-0.29
0.66
-0.46
555
0.0105
0.41
-0.47
-0.34
0.60
-0.48
560
0.0112
0.43
-0.48
-0.40
0.55
-0.49
565
0.0116
0.44
-0.49
-0.46
0.49
-0.49
570
0.0117
0.44
-0.49
-0.52
0.43
-0.48
575
0.0116
0.44
-0.49
-0.57
0.38
-0.47
580
0.0111
0.42
-0.47
-0.63
0.32
-0.44
585
0.0105
0.40
-0.45
-0.68
0.28
-0.41
590
0.0097
0.37
-0.42
-0.73
0.23
-0.38
595
0.0088
0.34
-0.39
-0.77
0.20
-0.34
600
0.0079
0.31
-0.35
-0.81
0.16
-0.30
605
0.0070
0.28
-0.31
-0.85
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 60 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.
Max pain, walls and gamma print only when an expiration holds at least 100 open contracts across 5 strikes, and max pain also needs to stay within 5% of spot when its single heaviest strike is removed. Below that the expiration reads as thin rather than printing a level one trade could move.
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.