ISRG· Intuitive Surgical
Open interest · contracts by strike
Spot
377.9
Max Pain
370
Call OI
7,424
Put OI
9,812
P/C ratio
1.32
Open interest by strike (contracts)
Call OIPut OISpot / max pain
Max pain 370
Spot 377.9
430
223
425
192
420
254
774
415
160
410
385
405
190
402.5
105
400
180
1,127
Call OI
397.5
395
119
392.5
390
280
490
387.5
385
207
382.5
380
458
379
377.5
436
375
327
423
372.5
108
370
806
465
Max pain
367.5
365
506
248
362.5
360
372
155
357.5
355
204
110
352.5
350
2,448
222
Put OI
347.5
345
681
342.5
340
813
252
337.5
335
639
359
332.5
330
897
327.5
325
317
322.5
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
ISRG 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.