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Robeco Institutional Asset Management B.V.

Position in ALNY — Alnylam Pharmaceuticals, Inc.

CIK 1418773 ROTTERDAM, P7

Position in ALNY

as of Mar 31, 2026 · filed Apr 21, 2026
Position Value
$41,842,812
-$15,705,493 QoQ
Shares Held
126,463
-12.6% QoQ
Ownership
0.095%
of shares outstanding
% of Portfolio
0.06%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
24 quarters on record
Voting authority Sole 62.914844658121346.ToString("F0")% Shared 0.ToString("F0")% None 37.085155341878654.ToString("F0")%

Common Shares in ALNY Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Mar 31, 2026

Robeco Institutional Asset Management B.V. holds $889,404,646 across 13 Biotechnology names. ALNY ranks #6 (4.7% of the industry book) .

# Ticker Company Shares Value (USD) Open
6 ALNY
Alnylam Pharmaceuticals, Inc.
This page
126,463 $41,842,812

All Filings in ALNY

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24 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $41,842,812 126,463
2025-12-31 $57,548,305 144,721
2025-09-30 $51,561,744 113,074
2025-06-30 $31,424,641 96,368
2025-03-31 $27,941,939 103,481
2024-12-31 $23,529,588 99,994
2024-09-30 $20,233,407 73,568
2024-06-30 $12,069,810 49,670
2024-03-31 $4,310,138 28,840
2023-12-31 $4,619,680 24,135
2023-09-30 $1,423,175 8,036
2023-06-30 $5,155,541 27,143
2023-03-31 $10,568,482 52,758
2022-12-31 $12,354,710 51,987
2022-09-30 $7,878,097 39,359
2022-06-30 $351,644 2,411
2022-03-31 $488,237 2,990
2021-12-31 $6,613 39
2021-06-30 $610,611 3,602
2021-03-31 $1,243,883 8,810
2020-12-31 $1,852,592 14,254
2020-09-30 $5,074,596 34,853
2020-06-30 $8,943,918 60,387
2020-03-31 $273,975 2,517