SourcePut open interest divided by call open interest
As ofCboe delayed snapshot Nov 6, 7:20 PM ET
How7,716 put contracts / 45,239 call contracts = 0.17 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 6, 7:20 PM 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.
Max pain is not shown: without its single heaviest strike it moves 34% of spot, more than the 5% we allow, so one strike decides it. Walls and gamma still print.
Event risk before this expiration:CPI release Tue, Nov 10 · 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.
Max pain is not shown: without its single heaviest strike it moves 34% of spot, more than the 5% we allow, so one strike decides it. Walls and gamma still print.
Open interest by strike · Fri, Mar 19
■ calls (up)■ puts (down)NRG open contracts per strike for Fri, Mar 19.
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 ≈ 57.5% · 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
0.93
-0.02
55
0.0041
0.07
-0.02
-0.07
0.90
-0.02
60
0.0056
0.10
-0.02
-0.11
0.86
-0.03
65
0.0072
0.12
-0.03
-0.15
0.81
-0.03
70
0.0088
0.15
-0.03
-0.20
0.75
-0.04
75
0.0104
0.17
-0.04
-0.25
0.69
-0.04
80
0.0117
0.19
-0.04
-0.32
0.63
-0.04
85
0.0128
0.20
-0.04
-0.38
0.56
-0.04
90
0.0134
0.21
-0.04
-0.45
0.49
-0.04
95
0.0137
0.21
-0.04
-0.51
0.43
-0.04
100
0.0136
0.21
-0.04
-0.58
0.37
-0.04
105
0.0131
0.20
-0.04
-0.64
0.32
-0.04
110
0.0124
0.19
-0.04
-0.69
0.27
-0.04
115
0.0116
0.18
-0.04
-0.74
0.23
-0.03
120
0.0106
0.16
-0.04
-0.79
0.20
-0.03
125
0.0096
0.15
-0.03
-0.83
Quoted contract greeks from the delayed feed (not modeled here); the highlighted row is nearest to spot. Showing 15 strikes around the money — all 36 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.