Robeco Institutional Asset Management B.V. Merck & Co., Inc. Transaction History

Robeco Institutional Asset Management B.V.

$66.7 Billion
Q3 2025

A detailed history of Robeco Institutional Asset Management B.V. transactions in Merck & Co., Inc. stock. As of the latest transaction made, Robeco Institutional Asset Management B.V. holds 3,006,132 shares of MRK stock, worth $263 Million. This represents 0.38% of its overall portfolio holdings.

Number of Shares

3,006,132

Previous 3,163,417 4.97%

Holding current value

$263 Million

Previous $250 Million 0.75%

% of portfolio

0.38%

Previous 0.42%

51 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Oct 22, 2025	SELL	$77.6 - $87.37 $12.2 Million - $13.7 Million	-157,285 Reduced 4.97%	3,006,132 $252 Million
Q2 2025 Jul 18, 2025	BUY	$73.47 - $87.12 $40.9 Million - $48.5 Million	556,891 Added 21.37%	3,163,417 $250 Million
Q1 2025 Apr 23, 2025	SELL	$83.01 - $101.02 $4.22 Million - $5.14 Million	-50,885 Reduced 1.91%	2,606,526 $234 Million
Q4 2024 Jan 22, 2025	SELL	$96.31 - $114.76 $52.6 Million - $62.7 Million	-546,267 Reduced 17.05%	2,657,411 $264 Million
Q3 2024 Oct 29, 2024	SELL	$111.15 - $128.97 $11.5 Million - $13.3 Million	-103,129 Reduced 3.12%	3,203,678 $364 Million
Q2 2024 Jul 22, 2024	BUY	$123.8 - $132.96 $46.8 Million - $50.3 Million	378,024 Added 12.91%	3,306,807 $409 Million
Q1 2024 Apr 24, 2024	SELL	$113.24 - $131.95 $1.73 Million - $2.01 Million	-15,248 Reduced 0.52%	2,928,783 $386 Million
Q4 2023 Feb 14, 2024	BUY	$100.18 - $109.02 $137 Million - $149 Million	1,363,305 Added 86.25%	2,944,031 $321 Million
Q4 2023 Feb 08, 2024	SELL	$100.18 - $109.02 $157 Million - $171 Million	-1,568,082 Reduced 49.8%	1,580,726 $2.94 Billion
Q3 2023 Oct 23, 2023	BUY	$102.95 - $114.33 $9.06 Million - $10.1 Million	87,972 Added 2.87%	3,148,808 $324 Million
Q2 2023 Jul 24, 2023	SELL	$108.61 - $118.38 $27.7 Million - $30.2 Million	-255,374 Reduced 7.7%	3,060,836 $353 Million
Q1 2023 May 03, 2023	SELL	$102.94 - $114.86 $31 Million - $34.6 Million	-301,558 Reduced 8.34%	3,316,210 $353 Million
Q4 2022 Feb 06, 2023	SELL	$87.44 - $112.11 $37.6 Million - $48.2 Million	-430,359 Reduced 10.63%	3,617,768 $401 Million
Q3 2022 Dec 01, 2022	SELL	$84.53 - $94.96 $4.35 Million - $4.89 Million	-51,494 Reduced 1.26%	4,048,127 $349 Million
Q3 2022 Oct 26, 2022	SELL	$84.53 - $94.96 $4.35 Million - $4.89 Million	-51,494 Reduced 1.26%	4,048,127 $349 Million
Q2 2022 Dec 01, 2022	BUY	$83.49 - $94.64 $25.5 Million - $28.9 Million	305,247 Added 8.04%	4,099,621 $374 Million
Q2 2022 Jul 27, 2022	BUY	$83.49 - $94.64 $25.5 Million - $28.9 Million	305,247 Added 8.04%	4,099,621 $374 Million
Q1 2022 Dec 01, 2022	SELL	$73.51 - $82.4 $97.7 Million - $110 Million	-1,329,017 Reduced 25.94%	3,794,374 $311 Million
Q1 2022 Apr 26, 2022	SELL	$73.51 - $82.4 $97.7 Million - $110 Million	-1,329,017 Reduced 25.94%	3,794,374 $311 Million
Q4 2021 Dec 01, 2022	BUY	$72.28 - $90.54 $57.2 Million - $71.6 Million	791,320 Added 18.27%	5,123,391 $393 Million
Q4 2021 Jan 31, 2022	BUY	$72.28 - $90.54 $57.2 Million - $71.6 Million	791,320 Added 18.27%	5,123,391 $393 Million
Q3 2021 Dec 01, 2022	SELL	$71.68 - $78.83 $7.5 Million - $8.24 Million	-104,587 Reduced 2.36%	4,332,071 $325 Million
Q3 2021 Oct 20, 2021	SELL	$71.68 - $78.83 $7.5 Million - $8.24 Million	-104,587 Reduced 2.36%	4,332,071 $325 Million
Q2 2021 Dec 01, 2022	SELL	$70.31 - $77.77 $4.54 Million - $5.02 Million	-64,548 Reduced 1.43%	4,436,658 $345 Million
Q2 2021 Jul 28, 2021	SELL	$70.31 - $77.77 $4.54 Million - $5.02 Million	-64,548 Reduced 1.43%	4,436,658 $345 Million
Q1 2021 Dec 01, 2022	BUY	$68.86 - $81.11 $31.2 Million - $36.7 Million	453,079 Added 11.19%	4,501,206 $347 Million
Q1 2021 Apr 23, 2021	BUY	$68.86 - $81.11 $21.9 Million - $25.8 Million	318,686 Added 7.62%	4,501,206 $347 Million
Q4 2020 Dec 01, 2022	BUY	$71.77 - $79.65 $9.65 Million - $10.7 Million	134,393 Added 3.32%	4,182,520 $342 Million
Q4 2020 Jan 28, 2021	BUY	$71.77 - $79.65 $47.5 Million - $52.7 Million	661,388 Added 18.78%	4,182,520 $342 Million
Q3 2020 Jan 19, 2021	SELL	$73.18 - $82.95 $492,501 - $558,253	-6,730 Reduced 0.19%	3,521,132 $292 Million
Q3 2020 Oct 29, 2020	BUY	$73.18 - $82.95 $6.21 Million - $7.04 Million	84,885 Added 2.47%	3,527,862 $293 Million
Q2 2020 Jan 19, 2021	SELL	$70.42 - $80.13 $653,920 - $744,087	-9,286 Reduced 0.27%	3,442,977 $266 Million
Q2 2020 Jul 20, 2020	SELL	$70.42 - $80.13 $42.3 Million - $48.1 Million	-600,633 Reduced 14.82%	3,452,263 $267 Million
Q1 2020 Jan 19, 2021	SELL	$63.36 - $87.82 $635,754 - $881,185	-10,034 Reduced 0.25%	4,052,896 $312 Million
Q1 2020 Apr 30, 2020	SELL	$63.36 - $87.82 $249,131 - $345,308	-3,932 Reduced 0.1%	4,062,930 $313 Million
Q4 2019 Feb 06, 2020	BUY	$77.58 - $87.54 $9.25 Million - $10.4 Million	119,207 Added 3.02%	4,066,862 $370 Million
Q3 2019 Oct 17, 2019	SELL	$76.08 - $82.93 $4.49 Million - $4.89 Million	-59,004 Reduced 1.47%	3,947,655 $332 Million
Q2 2019 Jul 19, 2019	BUY	$69.84 - $81.59 $12 Million - $14.1 Million	172,407 Added 4.5%	4,006,659 $336 Million
Q1 2019 May 02, 2019	BUY	$69.58 - $79.36 $49.4 Million - $56.3 Million	709,780 Added 22.72%	3,834,252 $319 Million
Q4 2018 Feb 08, 2019	BUY	$65.24 - $75.71 $44.4 Million - $51.5 Million	680,339 Added 27.84%	3,124,472 $239 Million
Q3 2018 Oct 31, 2018	BUY	$57.69 - $67.84 $218,760 - $257,249	3,792 Added 0.16%	2,444,133 $173 Million
Q3 2018 Oct 25, 2018	BUY	$57.69 - $67.84 $7.34 Million - $8.64 Million	127,285 Added 5.5%	2,440,341 $173 Million
Q2 2018 Aug 03, 2018	SELL	$50.83 - $59.72 $3.4 Million - $3.99 Million	-66,848 Reduced 2.81%	2,313,056 $140 Million
Q1 2018 May 07, 2018	BUY	$50.96 - $59.23 $4.15 Million - $4.83 Million	81,493 Added 3.55%	2,379,904 $130 Million
Q4 2017 Jan 19, 2021	SELL	$51.62 - $61.64 $671,989 - $802,429	-13,018 Reduced 0.56%	2,298,411 $129 Million
Q4 2017 Jan 25, 2018	BUY	$51.62 - $61.64 $15 Million - $17.9 Million	290,816 Added 14.39%	2,311,429 $130 Million
Q3 2017 Jan 19, 2021	SELL	$58.67 - $63.13 $1.46 Million - $1.57 Million	-24,918 Reduced 1.22%	2,020,613 $129 Million
Q3 2017 Oct 17, 2017	BUY	$58.67 - $63.13 $1.03 Million - $1.11 Million	17,573 Added 0.87%	2,045,531 $131 Million
Q2 2017 Jan 19, 2021	SELL	N/A	-23,275 Reduced 1.13%	2,027,958 $130 Million
Q2 2017 Aug 08, 2017	BUY	N/A	81,413 Added 4.13%	2,051,233 $131 Million
Q1 2017 Jan 19, 2021	BUY	N/A	1,969,820	1,969,820 $125 Million

Others Institutions Holding MRK

# of Institutions

3,853

Shares Held

1.96B

Call Options Held

29.2M

Put Options Held

29.9M

View Full List

About Merck & Co., Inc.

Ticker MRK
Exchange NYSE
Sector Healthcare
Industry Drug Manufacturers—General
Shares Outstandng 2,533,280,000
Market Cap $222B
Description
Merck & Co., Inc. operates as a healthcare company worldwide. It operates through two segments, Pharmaceutical and Animal Health. The Pharmaceutical segment offers human health pharmaceutical products in the areas of oncology, hospital acute care, immunology, neuroscience, virology, cardiovascular, and diabetes, as well as vaccine products, ...

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Robeco Institutional Asset Management B.V. Merck & Co., Inc. Transaction History