Robeco Institutional Asset Management B.V. Biogen 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 Biogen Inc. stock. As of the latest transaction made, Robeco Institutional Asset Management B.V. holds 671,054 shares of BIIB stock, worth $100 Million. This represents 0.14% of its overall portfolio holdings.

Number of Shares
671,054
Previous 448,757 49.54%
Holding current value
$100 Million
Previous $56.4 Million 66.79%
% of portfolio
0.14%
Previous 0.09%

Shares

52 transactions
Quarter Operation Price Per share shares change shares Held SEC Form
Q3 2025

Oct 22, 2025
BUY
$122.68 - $148.84 $27.3 Million - $33.1 Million
222,297 Added 49.54%
671,054 $94 Million
Q2 2025

Jul 18, 2025
SELL
$113.38 - $135.49 $541,049 - $646,558
-4,772 Reduced 1.05%
448,757 $56.4 Million
Q1 2025

Apr 23, 2025
BUY
$133.43 - $153.27 $6.04 Million - $6.94 Million
45,253 Added 11.08%
453,529 $62.1 Million
Q4 2024

Jan 22, 2025
BUY
$146.47 - $191.55 $19.6 Million - $25.6 Million
133,568 Added 48.62%
408,276 $62.4 Million
Q3 2024

Oct 29, 2024
BUY
$189.07 - $236.8 $11.3 Million - $14.2 Million
59,771 Added 27.81%
274,708 $53.2 Million
Q2 2024

Jul 22, 2024
SELL
$190.52 - $236.72 $3.16 Million - $3.92 Million
-16,579 Reduced 7.16%
214,937 $49.8 Million
Q1 2024

Apr 24, 2024
SELL
$212.02 - $267.71 $13.2 Million - $16.6 Million
-62,024 Reduced 21.13%
231,516 $49.9 Million
Q4 2023

Feb 14, 2024
BUY
$222.59 - $267.94 $29.4 Million - $35.4 Million
131,949 Added 81.66%
293,540 $76 Million
Q4 2023

Feb 08, 2024
SELL
$222.59 - $267.94 $40.1 Million - $48.3 Million
-180,219 Reduced 52.72%
161,591 $294 Million
Q3 2023

Oct 23, 2023
SELL
$253.3 - $285.89 $356,393 - $402,247
-1,407 Reduced 0.41%
341,810 $87.8 Million
Q2 2023

Jul 24, 2023
SELL
$275.25 - $318.06 $5.02 Million - $5.8 Million
-18,230 Reduced 5.04%
343,217 $97.8 Million
Q1 2023

May 03, 2023
BUY
$256.56 - $292.34 $12.4 Million - $14.1 Million
48,290 Added 15.42%
361,447 $100 Million
Q4 2022

Feb 06, 2023
BUY
$252.44 - $306.72 $1.35 Million - $1.64 Million
5,341 Added 1.74%
313,157 $86.7 Million
Q3 2022

Dec 01, 2022
BUY
$194.69 - $268.46 $24.6 Million - $33.9 Million
126,305 Added 69.59%
307,816 $82.2 Million
Q3 2022

Oct 26, 2022
BUY
$194.69 - $268.46 $24.6 Million - $33.9 Million
126,305 Added 69.59%
307,816 $82.2 Million
Q2 2022

Dec 01, 2022
BUY
$187.54 - $223.02 $734,219 - $873,123
3,915 Added 2.2%
181,511 $37 Million
Q2 2022

Jul 27, 2022
BUY
$187.54 - $223.02 $734,219 - $873,123
3,915 Added 2.2%
181,511 $37 Million
Q1 2022

Dec 01, 2022
SELL
$193.77 - $244.14 $2.65 Million - $3.34 Million
-13,669 Reduced 7.15%
177,596 $37.4 Million
Q1 2022

Apr 26, 2022
SELL
$193.77 - $244.14 $2.65 Million - $3.34 Million
-13,669 Reduced 7.15%
177,596 $37.4 Million
Q4 2021

Dec 01, 2022
BUY
$223.92 - $287.77 $4.28 Million - $5.5 Million
19,104 Added 11.1%
191,265 $45.9 Million
Q4 2021

Jan 31, 2022
BUY
$223.92 - $287.77 $4.28 Million - $5.5 Million
19,104 Added 11.1%
191,265 $45.9 Million
Q3 2021

Dec 01, 2022
BUY
$282.99 - $369.05 $2.18 Million - $2.85 Million
7,716 Added 4.69%
172,161 $48.7 Million
Q3 2021

Oct 20, 2021
BUY
$282.99 - $369.05 $2.18 Million - $2.85 Million
7,716 Added 4.69%
172,161 $48.7 Million
Q2 2021

Dec 01, 2022
SELL
$259.0 - $414.71 $28.8 Million - $46.1 Million
-111,144 Reduced 40.33%
164,445 $56.9 Million
Q2 2021

Jul 28, 2021
SELL
$259.0 - $414.71 $28.8 Million - $46.1 Million
-111,144 Reduced 40.33%
164,445 $56.9 Million
Q1 2021

Dec 01, 2022
SELL
$242.95 - $284.63 $7.83 Million - $9.17 Million
-32,227 Reduced 10.47%
275,589 $77.1 Million
Q1 2021

Apr 23, 2021
SELL
$242.95 - $284.63 $11.9 Million - $13.9 Million
-48,910 Reduced 15.07%
275,589 $77.1 Million
Q4 2020

Dec 01, 2022
BUY
$236.26 - $355.63 $3.94 Million - $5.93 Million
16,683 Added 5.42%
324,499 $79.5 Million
Q4 2020

Jan 28, 2021
SELL
$236.26 - $355.63 $56.4 Million - $84.8 Million
-238,567 Reduced 42.37%
324,499 $79.5 Million
Q3 2020

Oct 29, 2020
BUY
$264.77 - $305.71 $42.5 Million - $49 Million
160,408 Added 39.84%
563,066 $160 Million
Q2 2020

Jul 20, 2020
BUY
$258.66 - $342.55 $37 Million - $49.1 Million
143,210 Added 55.2%
402,658 $108 Million
Q1 2020

Apr 30, 2020
BUY
$268.85 - $341.04 $10.6 Million - $13.4 Million
39,407 Added 17.91%
259,448 $82.1 Million
Q4 2019

Jan 19, 2021
SELL
$220.06 - $304.07 $162,624 - $224,707
-739 Reduced 0.33%
220,041 $65.3 Million
Q4 2019

Feb 06, 2020
SELL
$220.06 - $304.07 $3.65 Million - $5.04 Million
-16,575 Reduced 6.98%
220,780 $65.5 Million
Q3 2019

Jan 19, 2021
SELL
$217.44 - $243.88 $530,771 - $595,311
-2,441 Reduced 1.02%
237,355 $55.3 Million
Q3 2019

Oct 17, 2019
SELL
$217.44 - $243.88 $13.8 Million - $15.5 Million
-63,635 Reduced 20.97%
239,796 $55.8 Million
Q2 2019

Jan 19, 2021
SELL
$219.29 - $241.72 $470,157 - $518,247
-2,144 Reduced 0.7%
303,431 $71 Million
Q2 2019

Jul 19, 2019
SELL
$219.29 - $241.72 $32 Million - $35.3 Million
-146,082 Reduced 32.34%
305,575 $71.5 Million
Q1 2019

Jan 19, 2021
SELL
$216.71 - $338.96 $434,936 - $680,292
-2,007 Reduced 0.44%
451,657 $107 Million
Q1 2019

May 02, 2019
BUY
$216.71 - $338.96 $17 Million - $26.7 Million
78,637 Added 20.97%
453,664 $107 Million
Q4 2018

Jan 19, 2021
SELL
$278.5 - $352.75 $257,612 - $326,293
-925 Reduced 0.25%
375,027 $113 Million
Q4 2018

Feb 08, 2019
BUY
$278.5 - $352.75 $3.18 Million - $4.03 Million
11,436 Added 3.14%
375,952 $113 Million
Q3 2018

Jan 19, 2021
SELL
$293.51 - $383.83 $214,262 - $280,195
-730 Reduced 0.2%
364,516 $129 Million
Q3 2018

Oct 31, 2018
BUY
$293.51 - $383.83 $140,004 - $183,086
477 Added 0.13%
365,246 $129 Million
Q3 2018

Oct 25, 2018
SELL
$293.51 - $383.83 $15.4 Million - $20.1 Million
-52,392 Reduced 12.56%
364,769 $129 Million
Q2 2018

Jan 19, 2021
SELL
$257.52 - $306.91 $337,351 - $402,052
-1,310 Reduced 0.31%
417,161 $121 Million
Q2 2018

Aug 03, 2018
SELL
$257.52 - $306.91 $3.18 Million - $3.8 Million
-12,367 Reduced 2.87%
418,471 $121 Million
Q1 2018

May 07, 2018
BUY
$260.13 - $367.91 $36.3 Million - $51.3 Million
139,562 Added 47.91%
430,838 $118 Million
Q4 2017

Jan 25, 2018
BUY
$307.64 - $344.58 $42.9 Million - $48.1 Million
139,529 Added 91.95%
291,276 $92.8 Million
Q3 2017

Oct 17, 2017
BUY
$281.15 - $329.69 $32,613 - $38,244
116 Added 0.08%
151,747 $47.5 Million
Q2 2017

Aug 08, 2017
SELL
N/A
-4,072 Reduced 2.62%
151,631 $41.1 Million
Q1 2017

Jan 19, 2021
BUY
N/A
155,703
155,703 $42.6 Million

Others Institutions Holding BIIB

# of Institutions
1,045
Shares Held
132M
Call Options Held
2.84M
Put Options Held
2.54M
View Full List

About BIOGEN INC.

BIIB Quotes by TradingView
  • Ticker BIIB
  • Exchange NASDAQ
  • Sector Healthcare
  • Industry Drug Manufacturers—General
  • Shares Outstandng 144,000,992
  • Market Cap $21.5B
  • Description
  • Biogen Inc. discovers, develops, manufactures, and delivers therapies for treating neurological and neurodegenerative diseases. The company offers TECFIDERA, VUMERITY, AVONEX, PLEGRIDY, TYSABRI, and FAMPYRA for multiple sclerosis (MS); SPINRAZA for spinal muscular atrophy; and FUMADERM to treat plaque psoriasis. It also provides BENEPALI, an eta...
More about BIIB
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