Tapeab.io
Options/OI/BLK

BLK· BlackRock

Open interest · contracts by strike
as of 2026-11-05
Gamma (GEX) Full dossier

For the 6 Nov 2026 expiry, BLK's max pain is 1,162.5 against a spot of 1,170.67, 0.7% below it. Put open interest is 1.94 times call open interest across the shown strikes (787 puts, 405 calls). The largest call position is at 1,170 and the largest put position at 1,125. Max pain is a heuristic for where option holders lose most at expiry, not a price target.

Spot
1,170.7
Max Pain
1,162.5
Call OI
405
Put OI
787
P/C ratio
1.94

Open interest by strike (contracts)

Call OIPut OISpot / max pain
Max pain 1,162.5
Spot 1,170.7
1,340
23
1,330
21
1,310
1,290
1,270
10
1,250
24
1,230
26
52
1,220
1,210
40
1,200
17
33
1,190
17
29
1,180
10
12
1,170
53
Call OI
1,162.5
45
25
Max pain
1,157.5
47
1,152.5
14
1,147.5
1,142.5
20
1,137.5
19
25
1,132.5
52
1,125
239
Put OI
1,115
125
1,105
46
1,095
10
1,085
10
1,075
13
1,060
21
1,040
1,020
1,000
20
10

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

BLK 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.

10 Jun → 5 Nov
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, 10 Jun → 5 Nov, 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.