Ken Griffin Boston Scientific Corp Transaction History

Citadel Advisors LLC

$618 Billion
Q3 2025

A detailed history of Ken Griffin (Citadel Advisors LLC) transactions in Boston Scientific Corp stock. As of the latest transaction made, Citadel Advisors LLC holds 8,906,245 shares of BSX stock, worth $915 Million. This represents 0.14% of its overall portfolio holdings.

Number of Shares

8,906,245

Previous 5,404,305 64.8%

Holding current value

$915 Million

Previous $580 Million 49.79%

% of portfolio

0.14%

Previous 0.11%

33 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	BUY	$97.03 - $108.14 $340 Million - $379 Million	3,501,940 Added 64.8%	8,906,245 $870 Million
Q2 2025 Aug 14, 2025	SELL	$89.7 - $107.41 $2.62 Million - $3.14 Million	-29,250 Reduced 0.54%	5,404,305 $580 Million
Q1 2025 May 15, 2025	BUY	$89.38 - $106.18 $44.9 Million - $53.3 Million	502,103 Added 10.18%	5,433,555 $548 Million
Q4 2024 Feb 14, 2025	SELL	$83.62 - $91.5 $407 Million - $445 Million	-4,861,651 Reduced 49.64%	4,931,452 $440 Million
Q3 2024 Nov 14, 2024	SELL	$72.96 - $84.0 $197 Million - $227 Million	-2,706,764 Reduced 21.65%	9,793,103 $821 Million

Q2 2024 Aug 14, 2024	BUY	$67.33 - $77.71 $251 Million - $290 Million	3,725,802 Added 42.46%	12,499,867 $963 Million
Q1 2024 May 15, 2024	SELL	$57.6 - $68.62 $12 Million - $14.2 Million	-207,469 Reduced 2.31%	8,774,065 $601 Million
Q4 2023 Feb 14, 2024	SELL	$48.64 - $57.81 $592 Million - $704 Million	-12,174,688 Reduced 57.55%	8,981,534 $519 Million
Q3 2023 Nov 14, 2023	BUY	$50.19 - $54.68 $286 Million - $312 Million	5,699,874 Added 36.88%	21,156,222 $1.12 Billion
Q2 2023 Aug 14, 2023	BUY	$49.72 - $54.64 $22.1 Million - $24.3 Million	444,201 Added 2.96%	15,456,348 $836 Million
Q1 2023 May 15, 2023	BUY	$45.09 - $50.03 $382 Million - $424 Million	8,477,836 Added 129.74%	15,012,147 $751 Million
Q4 2022 Feb 14, 2023	SELL	$39.56 - $47.22 $315 Million - $376 Million	-7,957,191 Reduced 54.91%	6,534,311 $302 Million
Q3 2022 Nov 14, 2022	BUY	$36.71 - $109.66 $72 Million - $215 Million	1,960,393 Added 15.64%	14,491,502 $561 Million
Q2 2022 Aug 15, 2022	SELL	$35.24 - $47.1 $14.5 Million - $19.4 Million	-412,621 Reduced 3.19%	12,531,109 $467 Million
Q1 2022 May 16, 2022	BUY	$40.9 - $45.1 $263 Million - $290 Million	6,424,582 Added 98.55%	12,943,730 $573 Million
Q4 2021 Feb 14, 2022	BUY	$38.07 - $44.87 $68 Million - $80.1 Million	1,785,342 Added 37.71%	6,519,148 $277 Million
Q3 2021 Nov 15, 2021	SELL	$41.23 - $45.88 $30.8 Million - $34.3 Million	-747,071 Reduced 13.63%	4,733,806 $205 Million
Q2 2021 Aug 16, 2021	BUY	$38.58 - $44.24 $179 Million - $206 Million	4,646,664 Added 557.01%	5,480,877 $234 Million
Q1 2021 May 17, 2021	SELL	$35.27 - $39.67 $151 Million - $170 Million	-4,295,293 Reduced 83.74%	834,213 $32.2 Million
Q4 2020 Feb 16, 2021	BUY	$33.15 - $41.97 $157 Million - $198 Million	4,723,216 Added 1162.52%	5,129,506 $184 Million
Q3 2020 Nov 16, 2020	BUY	$34.44 - $42.23 $11.1 Million - $13.6 Million	321,066 Added 376.73%	406,290 $15.5 Million
Q2 2020 Aug 14, 2020	SELL	$30.19 - $39.11 $258 Million - $335 Million	-8,558,697 Reduced 99.01%	85,224 $2.99 Million
Q1 2020 May 15, 2020	BUY	$25.83 - $45.71 $72.3 Million - $128 Million	2,799,798 Added 47.91%	8,643,921 $282 Million
Q4 2019 Feb 14, 2020	BUY	$37.87 - $45.37 $7.35 Million - $8.81 Million	194,161 Added 3.44%	5,844,123 $264 Million
Q3 2019 Nov 14, 2019	SELL	$40.31 - $43.45 $12 Million - $12.9 Million	-297,408 Reduced 5.0%	5,649,962 $230 Million
Q2 2019 Aug 14, 2019	BUY	$34.91 - $42.98 $178 Million - $219 Million	5,085,713 Added 590.22%	5,947,370 $256 Million
Q1 2019 May 15, 2019	SELL	$32.91 - $40.75 $103 Million - $127 Million	-3,125,638 Reduced 78.39%	861,657 $0
Q4 2018 Feb 14, 2019	SELL	$31.73 - $39.04 $133 Million - $163 Million	-4,179,487 Reduced 51.18%	3,987,295 $141 Million
Q3 2018 Nov 13, 2018	BUY	$32.83 - $38.63 $43.3 Million - $50.9 Million	1,318,868 Added 19.26%	8,166,782 $0
Q2 2018 Aug 10, 2018	BUY	$26.84 - $34.32 $125 Million - $160 Million	4,670,982 Added 214.57%	6,847,914 $0
Q1 2018 May 11, 2018	BUY	$25.2 - $28.54 $39.5 Million - $44.7 Million	1,567,167 Added 257.01%	2,176,932 $59.5 Million
Q4 2017 Feb 09, 2018	SELL	$24.79 - $29.8 $36.4 Million - $43.7 Million	-1,467,135 Reduced 70.64%	609,765 $15.1 Million
Q3 2017 Nov 09, 2017	BUY	$26.26 - $29.17 $54.5 Million - $60.6 Million	2,076,900	2,076,900 $60.6 Million

Others Institutions Holding BSX

# of Institutions

1,951

Shares Held

1.26B

Call Options Held

10.8M

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 ...

More about BSX

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