Castleark Management’s Intuitive Surgical ISRG Stock Holding History

Castleark Management’s Portfolio ISRG Stock Details ISRG Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$553K	Hold	1,200	–	–	0.02%	249
2025 Q4	$680K	Hold	1,200	–	–	0.02%	242
2025 Q3	$537K	Sell	1,200 -90,499	-99%	-$43.4M	0.02%	242
2025 Q2	$49.8M	Sell	91,699 -23,726	-21%	-$12.4M	1.5%	18
2025 Q1	$57.2M	Buy	115,425 +24,956	+28%	+$13.8M	1.98%	14
2024 Q4	$47.2M	Buy	90,469 +2,990	+3%	+$1.56M	1.65%	16
2024 Q3	$43M	Sell	87,479 -25,717	-23%	-$12M	1.75%	15
2024 Q2	$50.4M	Buy	113,196 +1,430	+1%	+$570K	2.06%	12
2024 Q1	$44.6M	Buy	111,766 +12,622	+13%	+$4.77M	1.86%	13
2023 Q4	$33.4M	Sell	99,144 -2,836	-3%	-$845K	1.48%	16
2023 Q3	$29.8M	Buy	101,980 +8,210	+9%	+$2.56M	1.52%	18
2023 Q2	$32.1M	Buy	93,770 +35,580	+61%	+$10.8M	1.45%	19
2023 Q1	$14.9M	Sell	58,190 -860	-1%	-$212K	0.73%	31
2022 Q4	$15.7M	Buy	59,050 +57,850	+4,821%	+$14.1M	0.82%	29
2022 Q3	$225K	Hold	1,200	–	–	0.01%	252
2022 Q2	$241K	Hold	1,200	–	–	0.01%	257
2022 Q1	$362K	Hold	1,200	–	–	0.02%	262
2021 Q4	$431K	Hold	1,200	–	–	0.02%	270
2021 Q3	$398K	Hold	1,200	–	–	0.02%	266
2021 Q2	$368K	Hold	1,200	–	–	0.01%	272
2021 Q1	$296K	Hold	1,200	–	–	0.01%	283
2020 Q4	$327K	Sell	1,200 -600	-33%	-$149K	0.01%	296
2020 Q3	$426K	Hold	1,800	–	–	0.02%	281
2020 Q2	$342K	Hold	1,800	–	–	0.01%	281
2020 Q1	$297K	Hold	1,800	–	–	0.02%	261
2019 Q4	$355K	Hold	1,800	–	–	0.01%	297
2019 Q3	$324K	Sell	1,800 -10,470	-85%	-$1.81M	0.01%	310
2019 Q2	$2.15M	Sell	12,270 -51,270	-81%	-$8.78M	0.08%	214
2019 Q1	$12.1M	Hold	63,540	–	–	0.45%	57
2018 Q4	$10.1M	Hold	63,540	–	–	0.43%	64
2018 Q3	$12.2M	Hold	63,540	–	–	0.35%	97
2018 Q2	$10.1M	Hold	63,540	–	–	0.31%	107
2018 Q1	$8.74M	Hold	63,540	–	–	0.28%	114
2017 Q4	$7.73M	Sell	63,540 -360	-0.6%	-$45.1K	0.23%	138
2017 Q3	$7.43M	Hold	63,900	–	–	0.23%	147
2017 Q2	$6.64M	Hold	63,900	–	–	0.22%	154
2017 Q1	$5.44M	Sell	63,900 -11,250	-15%	-$889K	0.17%	179
2016 Q4	$5.29M	Hold	75,150	–	–	0.17%	182
2016 Q3	$6.05M	Hold	75,150	–	–	0.18%	161
2016 Q2	$5.52M	Hold	75,150	–	–	0.18%	159
2016 Q1	$5.02M	Hold	75,150	–	–	0.16%	169
2015 Q4	$4.56M	Sell	75,150 -10,260	-12%	-$576K	0.14%	174
2015 Q3	$4.36M	Hold	85,410	–	–	0.14%	178
2015 Q2	$4.6M	Hold	85,410	–	–	0.12%	197
2015 Q1	$4.79M	Hold	85,410	–	–	0.12%	197
2014 Q4	$5.02M	Sell	85,410 -2,340	-3%	-$130K	0.13%	164
2014 Q3	$4.27M	Hold	87,750	–	–	0.12%	179
2014 Q2	$4.01M	Hold	87,750	–	–	0.11%	183
2014 Q1	$4.27M	Sell	87,750 -3,690	-4%	-$174K	0.12%	179
2013 Q4	$3.9M	Buy	91,440 +6,030	+7%	+$254K	0.11%	170
2013 Q3	$4.38M	Sell	85,410 -881,190	-91%	-$38.9M	0.12%	180
2013 Q2	$54.4M	Buy	+966,600	New	+$53.2M	1.8%	24

Other funds holding ISRG

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Castleark Management's ISRG Position: Q1 2026 in Review

Castleark Management held its Intuitive Surgical (ISRG) position steady in Q1 2026 at 1,200 shares worth $553K. The position accounts for 0.02% of the portfolio, ranked #249.

Castleark Management first reported a position in ISRG in Q2 2013 and has held it in 52 quarters since. The position peaked at $57.2M in Q1 2025. 2,303 funds tracked by Wall St. Rank hold ISRG as of Q1 2026.

Castleark Management held 1,200 shares of Intuitive Surgical worth $553K as of Q1 2026.
Castleark Management left its Intuitive Surgical share count unchanged in Q1 2026.
Intuitive Surgical made up 0.02% of Castleark Management's portfolio in Q1 2026, its #249 holding.
Castleark Management first reported a position in Intuitive Surgical in Q2 2013 and has held it in 52 quarters since.
Castleark Management's Intuitive Surgical position peaked at $57.2M in Q1 2025.
2,303 funds tracked by Wall St. Rank held Intuitive Surgical as of Q1 2026.

Based on Castleark Management's 13F filing for Q1 2026, filed 15 May 2026.