HowThe settle strike with the smallest total payout to option holders for the 2027-04-16 expiration, over 44 strikes carrying 3,281 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
How650 put contracts / 2,631 call contracts = 0.25 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 — 380 — is the max pain price.
Open interest by strike · Fri, Apr 16
■ calls (up)■ puts (down)MPC 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 ≈ 48.0% · 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
0.79
-0.09
320
0.0023
0.73
-0.11
-0.21
0.76
-0.10
330
0.0025
0.79
-0.12
-0.24
0.73
-0.11
340
0.0026
0.83
-0.13
-0.27
0.70
-0.12
350
0.0028
0.88
-0.13
-0.30
0.67
-0.13
360
0.0029
0.92
-0.14
-0.33
0.64
-0.13
370
0.0030
0.95
-0.14
-0.36
0.61
-0.14
380
0.0031
0.97
-0.14
-0.40
0.58
-0.14
390
0.0032
0.99
-0.14
-0.43
0.54
-0.14
400
0.0032
1.00
-0.14
-0.46
0.51
-0.14
410
0.0033
1.01
-0.14
-0.49
0.48
-0.14
420
0.0033
1.01
-0.14
-0.53
0.45
-0.14
430
0.0033
1.00
-0.14
-0.56
0.42
-0.14
440
0.0032
0.99
-0.14
-0.59
0.40
-0.14
450
0.0032
0.98
-0.13
-0.62
0.37
-0.14
460
0.0031
0.96
-0.13
-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 44 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.