HowThe settle strike with the smallest total payout to option holders for the 2027-03-19 expiration, over 65 strikes carrying 40,495 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 11, 12:28 AM ET
How26,228 put contracts / 14,267 call contracts = 1.84 for the 2027-03-19 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 11, 12:28 AM ET
HowOver every strike with open interest for the 2027-03-19 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 — 280 — is the max pain price.
Open interest by strike · Fri, Mar 19
■ calls (up)■ puts (down)COHR open contracts per strike for Fri, Mar 19. Showing the 53 largest of 65 strikes by open interest, 98.7% 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, Mar 19
■ calls (up)■ puts (down)Today's traded contracts per strike (delayed).
Implied volatility by strike · Fri, Mar 19
— call IV— put IVATM ≈ 79.2% · Quoted strikes only; illiquid wings with junk fits are dropped, not smoothed.
Gamma exposure by strike · Fri, Mar 19
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, Mar 19
Call Δ
Call Θ
Strike
Γ
Vega
Put Θ
Put Δ
0.76
-0.12
175
0.0030
0.40
-0.13
-0.24
0.74
-0.12
180
0.0031
0.41
-0.13
-0.26
0.72
-0.13
185
0.0032
0.43
-0.13
-0.28
0.70
-0.13
190
0.0034
0.44
-0.14
-0.30
0.68
-0.14
195
0.0035
0.46
-0.14
-0.32
0.67
-0.14
200
0.0036
0.47
-0.14
-0.34
0.63
-0.14
210
0.0037
0.48
-0.15
-0.38
0.59
-0.15
220
0.0038
0.50
-0.15
-0.42
0.55
-0.15
230
0.0039
0.51
-0.15
-0.46
0.51
-0.15
240
0.0040
0.51
-0.15
-0.49
0.48
-0.15
250
0.0040
0.51
-0.15
-0.53
0.44
-0.15
260
0.0040
0.50
-0.15
-0.56
0.41
-0.15
270
0.0039
0.50
-0.15
-0.60
0.38
-0.14
280
0.0038
0.49
-0.14
-0.63
0.35
-0.14
290
0.0037
0.47
-0.14
-0.66
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 53 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.