VIX· CBOE Volatility Index
Open interest · contracts by strike
Spot
17.1
Max Pain
18
Call OI
644,223
Put OI
1,228,921
P/C ratio
1.91
Open interest by strike (contracts)
Call OIPut OISpot / max pain
Max pain 18
Spot 17.1
19.5
24,760
23,880
19
153,863
119,820
18.5
63,606
73,331
18
172,048
128,224
Call OI
17.5
98,220
66,310
17
200,392
107,987
16.5
109,012
60,784
16
222,000
49,843
Put OI
15.5
104,682
15
80,338
Open interest by strike with the max-pain level marked, per expiry — heuristics over CBOE delayed chains, same strike band as the GEX profile.
History
VIX open interest, night by night.
Total call and put contracts held on each recorded session — the level the strike profile above is a snapshot of.
11 Jun → 14 Sep
OI totals over time
Contracts outstanding, summed over the whole captured chain — every listed expiry and strike, wider than the strike band and single expiry shown in the profile above.
call OI, contractsput OI, contracts
One reading per session, captured nightly after the close, 11 Jun → 14 Sep, over CBOE delayed (~15-min) chains, computed across the full listed chain. Gaps are weekends, holidays and sessions a capture missed; any reading can be absent on a session that was captured, and the series is broken rather than drawn through it.