HowThe settle strike with the smallest total payout to option holders for the 2026-11-27 expiration, over 68 strikes carrying 6,566 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 10, 4:57 PM ET
How2,326 put contracts / 4,240 call contracts = 0.55 for the 2026-11-27 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 10, 4:57 PM ET
HowOver every strike with open interest for the 2026-11-27 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.
■ 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 — 670 — is the max pain price.
Open interest by strike · Fri, Nov 27
■ calls (up)■ puts (down)VOO open contracts per strike for Fri, Nov 27. Showing the 42 largest of 68 strikes by open interest, 98.4% 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 27
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Nov 27
— call IV— put IVATM ≈ 15.0% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Nov 27
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 27
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.84
-0.22
660
0.0075
0.36
-0.23
-0.16
0.81
-0.24
665
0.0088
0.41
-0.24
-0.19
0.77
-0.25
670
0.0104
0.45
-0.26
-0.23
0.73
-0.27
675
0.0122
0.49
-0.27
-0.27
0.67
-0.27
680
0.0141
0.54
-0.28
-0.33
0.64
-0.28
682.5
0.0150
0.56
-0.28
-0.36
0.60
-0.28
685
0.0160
0.57
-0.28
-0.40
0.52
-0.27
690
0.0176
0.59
-0.27
-0.48
0.43
-0.25
695
0.0184
0.58
-0.25
-0.58
0.38
-0.23
697.5
0.0184
0.57
-0.24
-0.63
0.33
-0.22
700
0.0181
0.54
-0.22
-0.68
0.28
-0.20
702.5
0.0173
0.51
-0.20
-0.73
0.24
-0.17
705
0.0162
0.47
-0.18
-0.78
0.20
-0.15
707.5
0.0147
0.42
-0.16
-0.82
0.16
-0.13
710
0.0130
0.37
-0.14
-0.86
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.
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.