Primecap Management CO Boston Scientific Corp Transaction History

Primecap Management CO

$126 Billion
Q3 2025

A detailed history of Primecap Management CO transactions in Boston Scientific Corp stock. As of the latest transaction made, Primecap Management CO holds 33,102,094 shares of BSX stock, worth $3.4 Billion. This represents 2.56% of its overall portfolio holdings.

Number of Shares

33,102,094

Previous 34,662,722 4.5%

Holding current value

$3.4 Billion

Previous $3.72 Billion 13.2%

% of portfolio

2.56%

Previous 3.04%

33 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 10, 2025	SELL	$97.03 - $108.14 $151 Million - $169 Million	-1,560,628 Reduced 4.5%	33,102,094 $3.23 Billion
Q2 2025 Aug 11, 2025	SELL	$89.7 - $107.41 $165 Million - $197 Million	-1,834,224 Reduced 5.03%	34,662,722 $3.72 Billion
Q1 2025 May 09, 2025	SELL	$89.38 - $106.18 $38.7 Million - $45.9 Million	-432,720 Reduced 1.17%	36,496,946 $3.68 Billion
Q4 2024 Feb 10, 2025	SELL	$83.62 - $91.5 $75 Million - $82.1 Million	-896,834 Reduced 2.37%	36,929,666 $3.3 Billion
Q3 2024 Nov 08, 2024	SELL	$72.96 - $84.0 $9.67 Million - $11.1 Million	-132,561 Reduced 0.35%	37,826,500 $3.17 Billion

Q2 2024 Aug 09, 2024	BUY	$67.33 - $77.71 $767,292 - $885,583	11,396 Added 0.03%	37,959,061 $2.92 Billion
Q1 2024 May 13, 2024	BUY	$57.6 - $68.62 $2.42 Million - $2.88 Million	42,006 Added 0.11%	37,947,665 $2.6 Billion
Q4 2023 Feb 09, 2024	BUY	$48.64 - $57.81 $26.8 Million - $31.8 Million	550,490 Added 1.47%	37,905,659 $2.19 Billion
Q3 2023 Nov 13, 2023	SELL	$50.19 - $54.68 $3.7 Million - $4.04 Million	-73,810 Reduced 0.2%	37,355,169 $1.97 Billion
Q2 2023 Aug 11, 2023	SELL	$49.72 - $54.64 $44.7 Million - $49.1 Million	-899,250 Reduced 2.35%	37,428,979 $2.02 Billion
Q1 2023 May 15, 2023	BUY	$45.09 - $50.03 $30.5 Million - $33.8 Million	676,370 Added 1.8%	38,328,229 $1.92 Billion
Q4 2022 Feb 13, 2023	BUY	$39.56 - $47.22 $61,318 - $73,191	1,550 Added 0.0%	37,651,859 $1.74 Billion
Q3 2022 Nov 14, 2022	SELL	$36.71 - $109.66 $6.22 Million - $18.6 Million	-169,300 Reduced 0.45%	37,650,309 $1.46 Billion
Q2 2022 Aug 11, 2022	SELL	$35.24 - $47.1 $3.57 Million - $4.77 Million	-101,210 Reduced 0.27%	37,819,609 $1.41 Billion
Q1 2022 May 11, 2022	SELL	$40.9 - $45.1 $8.09 Million - $8.92 Million	-197,800 Reduced 0.52%	37,920,819 $1.68 Billion
Q4 2021 Feb 11, 2022	SELL	$38.07 - $44.87 $56.7 Million - $66.8 Million	-1,488,690 Reduced 3.76%	38,118,619 $1.62 Billion
Q3 2021 Nov 12, 2021	SELL	$41.23 - $45.88 $17 Million - $19 Million	-413,136 Reduced 1.03%	39,607,309 $1.72 Billion
Q2 2021 Aug 10, 2021	SELL	$38.58 - $44.24 $38.3 Million - $43.9 Million	-991,895 Reduced 2.42%	40,020,445 $1.71 Billion
Q1 2021 May 14, 2021	BUY	$35.27 - $39.67 $54.7 Million - $61.5 Million	1,551,355 Added 3.93%	41,012,340 $1.59 Billion
Q4 2020 Feb 08, 2021	SELL	$33.15 - $41.97 $33.7 Million - $42.7 Million	-1,017,930 Reduced 2.51%	39,460,985 $1.42 Billion
Q3 2020 Nov 13, 2020	SELL	$34.44 - $42.23 $41.4 Million - $50.8 Million	-1,202,990 Reduced 2.89%	40,478,915 $1.55 Billion
Q2 2020 Aug 13, 2020	SELL	$30.19 - $39.11 $19 Million - $24.6 Million	-630,120 Reduced 1.49%	41,681,905 $1.46 Billion
Q1 2020 May 14, 2020	SELL	$25.83 - $45.71 $58.5 Million - $104 Million	-2,265,600 Reduced 5.08%	42,312,025 $1.38 Billion
Q4 2019 Feb 14, 2020	SELL	$37.87 - $45.37 $3.12 Million - $3.74 Million	-82,400 Reduced 0.18%	44,577,625 $2.02 Billion
Q3 2019 Nov 13, 2019	SELL	$40.31 - $43.45 $19.5 Million - $21 Million	-483,952 Reduced 1.07%	44,660,025 $1.82 Billion
Q2 2019 Aug 14, 2019	BUY	$34.91 - $42.98 $3.11 Million - $3.83 Million	89,200 Added 0.2%	45,143,977 $1.94 Billion
Q1 2019 May 14, 2019	SELL	$32.91 - $40.75 $263,280 - $326,000	-8,000 Reduced 0.02%	45,054,777 $1.73 Billion
Q4 2018 Feb 12, 2019	BUY	$31.73 - $39.04 $9.36 Million - $11.5 Million	294,992 Added 0.66%	45,062,777 $1.59 Billion
Q3 2018 Nov 13, 2018	SELL	$32.83 - $38.63 $1.29 Million - $1.52 Million	-39,356 Reduced 0.09%	44,767,785 $1.72 Billion
Q2 2018 Aug 13, 2018	BUY	$26.84 - $34.32 $2.34 Million - $2.99 Million	87,100 Added 0.19%	44,807,141 $1.47 Billion
Q1 2018 May 14, 2018	BUY	$25.2 - $28.54 $21.2 Million - $24 Million	842,479 Added 1.92%	44,720,041 $1.22 Billion
Q4 2017 Feb 13, 2018	BUY	$24.79 - $29.8 $42.4 Million - $50.9 Million	1,709,295 Added 4.05%	43,877,562 $1.09 Billion
Q3 2017 Nov 13, 2017	BUY	$26.26 - $29.17 $1.11 Billion - $1.23 Billion	42,168,267	42,168,267 $1.23 Billion

Others Institutions Holding BSX

# of Institutions

1,950

Shares Held

1.26B

Call Options Held

10.9M

Put Options Held

8.94M

View Full List

About BOSTON SCIENTIFIC CORP

Ticker BSX
Exchange NYSE
Sector Healthcare
Industry Medical Devices
Shares Outstandng 1,431,609,984
Market Cap $147B
Description
Boston Scientific Corporation develops, manufactures, and markets medical devices for use in various interventional medical specialties worldwide. It operates through three segments: MedSurg, Rhythm and Neuro, and Cardiovascular. The company offers devices to diagnose and treat gastrointestinal and pulmonary conditions; devices to treat various ...

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Primecap Management CO Boston Scientific Corp Transaction History