Vault-13

ALNYLAM PHARMACEUTICALS INC ALNY 1 09.15.27

NOTE 1.000% 9/1 · US DOMESTIC · CUSIP 02043QAB3

48 institutional holders +1 vs Q1 2026
594,763594.8k shares reported held*
$430.5mreported value*
11 new 10 added 10 reduced 10 sold out net bought ≈ $12.1m (-13.9m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $723.78.

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

0255075Q3 23: 57Q4 23: 70Q1 24: 72Q2 24: 68Q3 24: 60Q4 24: 68Q1 25: 73Q2 25: 71Q3 25: 48Q4 25: 48Q1 26: 47Q2 26: 4848Q3 23Q2 24Q1 25Q4 25Q2 26
Numbers
QuarterHolders
Q3 202357
Q4 202370
Q1 202472
Q2 202468
Q3 202460
Q4 202468
Q1 202573
Q2 202571
Q3 202548
Q4 202548
Q1 202647
Q2 202648

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
50050Q3 24: 25 bought or addedQ3 24: 39 cut or sold outQ4 24: 24 bought or addedQ4 24: 31 cut or sold outQ4 24Q1 25: 32 bought or addedQ1 25: 30 cut or sold outQ2 25: 25 bought or addedQ2 25: 38 cut or sold outQ2 25Q3 25: 20 bought or addedQ3 25: 50 cut or sold outQ4 25: 20 bought or addedQ4 25: 21 cut or sold outQ4 25Q1 26: 22 bought or addedQ1 26: 21 cut or sold outQ2 26: 21 bought or addedQ2 26: 20 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 20242539
Q4 20242431
Q1 20253230
Q2 20252538
Q3 20252050
Q4 20252021
Q1 20262221
Q2 20262120

Biggest buyers

BNP PARIBAS FINANCIAL MARKETS Added +10,000,000+10.0m
BNP PARIBAS ASSET MANAGEMENT Holding S.A. New +9,550,000+9.6m
AMERIPRISE FINANCIAL INC New +8,900,000+8.9m
BANK OF AMERICA CORP /DE/ Added +7,844,000+7.8m
TORONTO DOMINION BANK New +6,500,000+6.5m
ZAZOVE ASSOCIATES LLC New +5,075,000+5.1m
STEELHEAD PARTNERS LLC Added +5,000,000+5.0m
SSI INVESTMENT MANAGEMENT LLC New +4,098,000+4.1m
Universal- Beteiligungs- und Servicegesellschaft mbH Added +2,290,000+2.3m
JPMORGAN CHASE & CO Added +2,136,000+2.1m

Biggest sellers

STATE STREET CORP Reduced -13,500,000-13.5m
BNP PARIBAS ASSET MANAGEMENT Holding S.A. Sold out -9,750,000-9.8m
CSS LLC/IL Reduced -9,500,000-9.5m
BlackRock, Inc. Reduced -8,600,000-8.6m
TWO SIGMA INVESTMENTS, LP Sold out -6,000,000-6.0m
SSI INVESTMENT MANAGEMENT LLC Sold out -4,098,000-4.1m
MORGAN STANLEY Reduced -1,400,000-1.4m
FMR LLC Reduced -1,330,000-1.3m
LORD, ABBETT & CO. LLC Sold out -1,204,000-1.2m
Invesco Ltd. Reduced -1,000,000-1.0m

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 STEELHEAD PARTNERS LLC 5.57% of their portfolio SEATTLE, WA 65,000,00065.0m $78.2m $78.2m 5.57% Added +5.0m +5,000,000
2 BNP PARIBAS FINANCIAL MARKETS 0.03% of their portfolio PARIS, I0 42,318,00042.3m $50.9m $50.9m 0.03% Added +10.0m +10,000,000
3 Alberta Investment Management Corp 0.17% of their portfolio EDMONTON, A0 25,000,00025.0m $30.1m $30.1m 0.17% Unchanged
4 DeepCurrents Investment Group LLC 0.99% of their portfolio NEW YORK, NY 24,000,00024.0m $28.9m $28.9m 0.99% Unchanged
5 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 18,750,00018.8m $22.5m $22.5m 0.00% Added +7.8m +7,844,000
6 FMR LLC 0.00% of their portfolio BOSTON, MA 17,114,00017.1m $20.6m $20.6m 0.00% Reduced -1.3m -1,330,000
7 MacKay Shields LLC 0.60% of their portfolio New York, NY 14,834,00014.8m $17.9m $17.9m 0.60% Reduced -10.0k -10,000
8 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.01% of their portfolio Toronto, A6 13,800,00013.8m $16.5m $16.5m 0.01% Unchanged
9 Universal- Beteiligungs- und Servicegesellschaft mbH 0.02% of their portfolio FRANKFURT AM MAIN, 2M 10,505,00010.5m $12.7m $12.7m 0.02% Added +2.3m +2,290,000
10 BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.01% of their portfolio Paris, I0 9,550,0009.6m $11.4m $11.4m 0.01% New
11 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 9,270,0009.3m $11.1m $11.1m 0.00% Reduced -13.5m -13,500,000
12 CSS LLC/IL 0.48% of their portfolio CHICAGO, IL 9,063,0009.1m $10.9m $10.9m 0.48% Reduced -9.5m -9,500,000
13 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 8,900,0008.9m $10.7m $10.7m 0.00% New
14 BlackRock, Inc. 0.00% of their portfolio New York, NY 8,000,0008.0m $9.6m $9.6m 0.00% Reduced -8.6m -8,600,000
15 TORONTO DOMINION BANK 0.01% of their portfolio TORONTO, ONTARIO, A6 6,500,0006.5m $7.8m $7.8m 0.01% New
16 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 6,349,0006.3m $7.6m $7.6m 0.00% Added +692.0k +692,000
17 ZAZOVE ASSOCIATES LLC 0.50% of their portfolio INCLINE VILLAGE, NV 5,075,0005.1m $6.1m $6.1m 0.50% New
18 Warberg Asset Management LLC 1.78% of their portfolio WINNETKA, IL 5,002,0005.0m $6.0m $6.0m 1.78% Unchanged
19 Amundi 0.00% of their portfolio Paris, I0 5,000,0005.0m $6.0m $6.0m 0.00% Unchanged
20 SSI INVESTMENT MANAGEMENT LLC 0.29% of their portfolio Los Angeles, CA 4,098,0004.1m $4.9m $4.9m 0.29% New
21 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 3,186,0003.2m $3.8m $3.8m 0.00% Added +2.1m +2,136,000
22 EFG International AG 0.07% of their portfolio Zurich, V8 3,000,0003.0m $3.6m $3.6m 0.07% Added +1.0m +1,000,000
23 FRANKLIN RESOURCES INC 0.00% of their portfolio San Mateo, CA 2,235,0002.2m $2.7m $2.7m 0.00% Unchanged
24 Union Bancaire Privee, UBP SA 0.02% of their portfolio GENEVA 1, V8 2,130,0002.1m $2.2m $2.2m 0.02% Added +150.0k +150,000
25 NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 0.00% of their portfolio PHILADELPHIA, PA 2,059,0002.1m $2.5m $2.5m 0.00% Reduced -31.0k -31,000
26 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 1,720,0001.7m $2.1m $2.1m 0.00% Reduced -1.4m -1,400,000
27 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 1,500,0001.5m $1.8m $1.8m 0.00% Reduced -1.0m -1,000,000
28 Capital World Investors 0.00% of their portfolio LOS ANGELES, CA 1,483,0001.5m $1.8m $1.8m 0.00% New
29 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 1,279,0001.3m $1.5m $1.5m 0.00% New
30 KIM, LLC 0.16% of their portfolio WICHITA, KS 1,000,0001.0m $1.2m $1.2m 0.16% Unchanged
31 AGF MANAGEMENT LTD 0.00% of their portfolio TORONTO, A6 950,000950.0k $1.1m $1.1m 0.00% Unchanged
32 ADVENT CAPITAL MANAGEMENT /DE/ 0.02% of their portfolio NEW YORK, NY 850,000850.0k $1.0m $1.0m 0.02% New
33 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 664,000664.0k $798.8k $798.8k 0.00% Reduced -246.0k -246,000
34 Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio ZURICH, V8 400,000400.0k $478.2k $478.2k 0.00% New
35 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 374,000374.0k $449.7k $449.7k 0.00% Unchanged
36 SEI INVESTMENTS CO 0.00% of their portfolio OAKS, PA 251,000251.0k $301.8k $301.8k 0.00% Unchanged
37 Central Pacific Bank - Trust Division 0.03% of their portfolio HONOLULU, HI 224,000224.0k $269.3k $269.3k 0.03% Unchanged
38 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 215,000215.0k $258.7k $258.7k 0.00% Unchanged
39 Virtus Fixed Income Advisers, LLC 0.12% of their portfolio HARTFORD, CT 161,000161.0k $193.6k $193.6k 0.12% New
40 OPPENHEIMER ASSET MANAGEMENT INC. 0.00% of their portfolio NEW YORK, NY 80,00080.0k $96.2k $96.2k 0.00% Reduced -1.0k -1,000
41 VIRTUS ADVISERS, LLC 0.02% of their portfolio HARTFORD, CT 36,00036.0k $43.3k $43.3k 0.02% Unchanged
42 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 31,00031.0k $36.9k $36.9k 0.00% New
43 BOUSSARD & GAVAUDAN GESTION SAS 1.50% of their portfolio PARIS, I0 24,76324.8k $29.7m $29.7m 1.50% First filing
44 STEPHENS INC /AR/ 0.00% of their portfolio LITTLE ROCK, AR 24,00024.0k $28.9k $28.9k 0.00% Unchanged
45 UBS Group AG 0.00% of their portfolio ZURICH, V8 23,00023.0k $27.7k $27.7k 0.00% Added +330 +330
46 Alken Asset Management Ltd 2.13% of their portfolio LONDON, X0 1,6001.6k $1.9m $1.9m 2.13% Added +600 +600
47 Steward Partners Investment Advisory, LLC 0.00% of their portfolio STAMFORD, CT 1,0001.0k $1.2k $1.2k 0.00% Unchanged
48 Erste Asset Management GmbH 0.00% of their portfolio VIENNA, C4 00 $0 $0 0.00% Unchanged