SMH
Open interest · contracts by strike
Spot
541.5
Max Pain
560
Call OI
2,032
Put OI
2,642
P/C ratio
1.30
Open interest by strike (contracts)
Call OIPut OISpot / max pain
Max pain 560
Spot 541.5
622.5
620
615
610
605
600
595
60
590
80
585
45
580
122
575
125
570
288
205
565
498
322
560
200
Max pain
555
88
68
550
176
869
Call OI
545
483
38
540
57
535
530
92
525
620
Put OI
520
43
515
505
495
485
475
465
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
SMH 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.
23 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, 23 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.