HowThe settle strike with the smallest total payout to option holders for the 2027-04-16 expiration, over 21 strikes carrying 462 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, 6:03 PM ET
How209 put contracts / 253 call contracts = 0.83 for the 2027-04-16 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, 6:03 PM ET
HowOver every strike with open interest for the 2027-04-16 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:Jobs report Fri, Dec 4 · FOMC decision Wed, Dec 9 · CPI release Thu, Dec 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 — 220 — is the max pain price.
Open interest by strike · Fri, Apr 16
■ calls (up)■ puts (down)MRSH open contracts per strike for Fri, Apr 16.
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, Apr 16
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Apr 16
— call IV— put IVATM ≈ 23.7% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Apr 16
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, Apr 16
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.89
-0.01
170
0.0049
0.26
-0.02
-0.12
0.86
-0.02
175
0.0059
0.29
-0.03
-0.14
0.83
-0.02
180
0.0069
0.34
-0.03
-0.17
0.80
-0.03
185
0.0081
0.39
-0.03
-0.21
0.75
-0.03
190
0.0092
0.43
-0.03
-0.26
0.70
-0.03
195
0.0103
0.46
-0.04
-0.31
0.65
-0.04
200
0.0113
0.50
-0.04
-0.36
0.53
-0.04
210
0.0126
0.53
-0.04
-0.48
0.41
-0.04
220
0.0125
0.52
-0.04
-0.61
0.30
-0.03
230
0.0112
0.47
-0.03
-0.73
0.21
-0.03
240
0.0092
0.39
-0.03
-0.83
0.14
-0.02
250
0.0072
0.31
-0.02
-0.92
0.10
-0.02
260
0.0054
0.24
-0.03
-0.98
0.07
-0.01
270
0.0040
0.18
-0.05
-1.00
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 14 strikes around the money — all 21 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.