Great Lakes Advisors’s Boston Scientific BSX Stock Holding History

Great Lakes Advisors’s Portfolio BSX Stock Details BSX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$11.9M	Sell	279,760 -1,599,012	-85%	-$86.8M	0.09%	136
2026 Q1	$118M	Buy	1,878,772 +101,996	+6%	+$8.16M	0.98%	34
2025 Q4	$169M	Sell	1,776,776 -57,625	-3%	-$5.65M	1.38%	13
2025 Q3	$179M	Sell	1,834,401 -25,464	-1%	-$2.64M	1.49%	10
2025 Q2	$200M	Sell	1,859,865 -208,338	-10%	-$21.1M	1.67%	5
2025 Q1	$209M	Sell	2,068,203 -143,586	-6%	-$14.5M	1.87%	2
2024 Q4	$198M	Sell	2,211,789 -65,630	-3%	-$5.78M	1.69%	3
2024 Q3	$191M	Sell	2,277,419 -27,451	-1%	-$2.16M	1.6%	5
2024 Q2	$177M	Sell	2,304,870 -89,294	-4%	-$6.54M	1.57%	4
2024 Q1	$164M	Sell	2,394,164 -206,994	-8%	-$13.3M	1.39%	6
2023 Q4	$150M	Sell	2,601,158 -652,914	-20%	-$34.9M	1.43%	5
2023 Q3	$172M	Buy	3,254,072 +621,619	+24%	+$32.6M	1.56%	5
2023 Q2	$142M	Sell	2,632,453 -526,269	-17%	-$27.5M	1.42%	5
2023 Q1	$158M	Buy	3,158,722 +2,003,259	+173%	+$94.4M	1.44%	7
2022 Q4	$6.73M	Sell	1,155,463 -44,077	-4%	-$1.91M	0.39%	76
2022 Q3	$46.5M	Sell	1,199,540 -35,720	-3%	-$1.43M	1.01%	21
2022 Q2	$46M	Buy	1,235,260 +187,804	+18%	+$7.64M	0.91%	24
2022 Q1	$46.4M	Buy	1,047,456 +19,666	+2%	+$852K	0.76%	32
2021 Q4	$43.7M	Buy	1,027,790 +28,812	+3%	+$1.21M	0.66%	36
2021 Q3	$43.3M	Sell	998,978 -2,299	-0.2%	-$102K	0.68%	36
2021 Q2	$42.8M	Buy	1,001,277 +102,748	+11%	+$4.32M	0.65%	37
2021 Q1	$34.7M	Buy	898,529 +15,749	+2%	+$596K	0.56%	39
2020 Q4	$31.7M	Buy	882,780 +43,588	+5%	+$1.57M	0.57%	43
2020 Q3	$32.1M	Buy	839,192 +389,862	+87%	+$15M	0.68%	36
2020 Q2	$15.8M	Sell	449,330 -19,245	-4%	-$693K	0.38%	82
2020 Q1	$15.3M	Sell	468,575 -6,485	-1%	-$253K	0.45%	59
2019 Q4	$21.5M	Buy	475,060 +3,244	+0.7%	+$136K	0.46%	50
2019 Q3	$19.2M	Buy	471,816 +454,918	+2,692%	+$19.3M	0.42%	54
2019 Q2	$726K	Sell	16,898 -18,823	-53%	-$724K	0.02%	418
2019 Q1	$1.37M	Buy	+35,721	New	+$1.36M	0.03%	377

Other funds holding BSX

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Great Lakes Advisors's BSX Position: Q2 2026 in Review

Great Lakes Advisors reduced its Boston Scientific (BSX) stake by 85% in Q2 2026, selling an estimated $86.8M and leaving 279,760 shares worth $11.9M. The position accounts for 0.09% of the portfolio, ranked #136.

Great Lakes Advisors first reported a position in BSX in Q1 2019 and has held it in 30 quarters since. The position peaked at $209M in Q1 2025. 1,477 funds tracked by Wall St. Rank hold BSX as of Q2 2026.

Great Lakes Advisors held 279,760 shares of Boston Scientific worth $11.9M as of Q2 2026.
Great Lakes Advisors sold 1,599,012 Boston Scientific shares in Q2 2026, an estimated $86.8M.
Boston Scientific made up 0.09% of Great Lakes Advisors's portfolio in Q2 2026, its #136 holding.
Great Lakes Advisors first reported a position in Boston Scientific in Q1 2019 and has held it in 30 quarters since.
Great Lakes Advisors's Boston Scientific position peaked at $209M in Q1 2025.
1,477 funds tracked by Wall St. Rank held Boston Scientific as of Q2 2026.

Based on Great Lakes Advisors's 13F filing for Q2 2026, filed 10 Aug 2026.