COST· Costco
Open interest · contracts by strike
Spot
918.9
Max Pain
925
Call OI
6,688
Put OI
10,190
P/C ratio
1.52
Open interest by strike (contracts)
Call OIPut OISpot / max pain
Max pain 925
Spot 918.9
1,040
1,186
Call OI
1,015
485
1,005
339
995
296
985
978
975
330
967.5
60
962.5
957.5
85
952.5
64
947.5
187
942.5
108
937.5
68
79
930
747
721
925
599
608
Max pain
920
1,481
462
Put OI
915
476
239
905
863
251
895
988
885
875
62
875
1,351
865
551
855
298
845
928
835
106
825
159
815
196
805
156
795
104
785
86
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
COST 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 → 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, 10 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.