NBIS
Open interest · contracts by strike
Spot
212.2
Max Pain
220
Call OI
43,420
Put OI
60,731
P/C ratio
1.40
Open interest by strike (contracts)
Call OIPut OISpot / max pain
Max pain 220
Spot 212.2
242.5
779
447
240
9,902
6,572
Put OI
237.5
424
235
1,378
4,266
232.5
475
466
230
4,738
5,488
227.5
528
3,130
225
2,297
716
222.5
640
409
220
6,949
2,684
Max pain
217.5
414
215
1,150
693
212.5
970
210
9,753
1,917
207.5
422
205
1,899
1,150
202.5
432
200
8,166
7,601
Call OI
197.5
735
1,841
195
1,546
891
192.5
190
3,695
2,953
187.5
185
2,980
1,251
182.5
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
NBIS 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.
18 Aug → 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, 18 Aug → 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.