Vault-13

ALNYLAM PHARMACEUTICALS INC ALNY 1 09.15.27

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

48 institutional holders +0 vs Q3 2025
13,158,99713.2m shares reported held*
$1.2bnreported value*
12 new 8 added 10 reduced 11 sold out net sold ≈ $83.4m (+8.9m 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 ≈ $94.30.

Trends to Q4 2025

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: 4848Q3 23Q1 24Q3 24Q1 25Q3 25Q4 25
Numbers
QuarterHolders
Q3 202357
Q4 202370
Q1 202472
Q2 202468
Q3 202460
Q4 202468
Q1 202573
Q2 202571
Q3 202548
Q4 202548

Buyers vs sellers

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

Bought or addedCut or sold out
50050Q1 24: 32 bought or addedQ1 24: 35 cut or sold outQ2 24: 29 bought or addedQ2 24: 37 cut or sold outQ2 24Q3 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 25
Numbers
QuarterBought or addedCut or sold out
Q1 20243235
Q2 20242937
Q3 20242539
Q4 20242431
Q1 20253230
Q2 20252538
Q3 20252050
Q4 20252021

Biggest buyers

Amundi New +5,000,000+5.0m
BNP PARIBAS ASSET MANAGEMENT Holding S.A. New +4,750,000+4.8m
BlackRock, Inc. Added +3,050,000+3.0m
FMR LLC Added +2,800,000+2.8m
Invesco Ltd. New +2,500,000+2.5m
Warberg Asset Management LLC Added +2,002,000+2.0m
GOLDMAN SACHS GROUP INC New +1,419,000+1.4m
STATE STREET CORP Added +750,000+750.0k
Jefferies Financial Group Inc. New +620,000+620.0k
CITIGROUP INC New +619,000+619.0k

Biggest sellers

VOYA INVESTMENT MANAGEMENT LLC Reduced -30,200,000-30.2m
LMR Partners LLP Sold out -15,000,000-15.0m
Parallax Volatility Advisers, L.P. Sold out -11,184,000-11.2m
BNP PARIBAS FINANCIAL MARKETS Reduced -7,760,000-7.8m
JPMORGAN CHASE & CO Reduced -5,407,000-5.4m
WELLINGTON MANAGEMENT GROUP LLP Sold out -2,504,000-2.5m
MACQUARIE GROUP LTD Sold out -2,090,000-2.1m
LORD, ABBETT & CO. LLC Reduced -2,075,000-2.1m
GABELLI FUNDS LLC Sold out -2,000,000-2.0m
LAZARD ASSET MANAGEMENT LLC Sold out -980,000-980.0k

Holders, Q4 2025

#ManagerLocationShares Value% of their portfolioChangeShares change
1 VOYA INVESTMENT MANAGEMENT LLC 0.20% of their portfolio ATLANTA, GA 139,790,000139.8m $205.9m $205.9m 0.20% Reduced -30.2m -30,200,000
2 Alberta Investment Management Corp 0.22% of their portfolio EDMONTON, A0 25,000,00025.0m $36.9m $36.9m 0.22% Unchanged
3 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 21,920,00021.9m $32.3m $32.3m 0.00% Added +750.0k +750,000
4 FMR LLC 0.00% of their portfolio BOSTON, MA 19,494,00019.5m $28.7m $28.7m 0.00% Added +2.8m +2,800,000
5 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.02% of their portfolio Toronto, A6 18,800,00018.8m $27.7m $27.7m 0.02% Unchanged
6 BNP PARIBAS FINANCIAL MARKETS 0.02% of their portfolio PARIS, I0 17,318,00017.3m $25.5m $25.5m 0.02% Reduced -7.8m -7,760,000
7 MacKay Shields LLC 0.76% of their portfolio New York, NY 14,838,00014.8m $21.8m $21.8m 0.76% Reduced -350.0k -350,000
8 BlackRock, Inc. 0.00% of their portfolio New York, NY 13,050,00013.1m $19.2m $19.2m 0.00% Added +3.0m +3,050,000
9 LORD, ABBETT & CO. LLC 0.03% of their portfolio JERSEY CITY, NJ 7,737,0007.7m $11.4m $11.4m 0.03% Reduced -2.1m -2,075,000
10 Warberg Asset Management LLC 2.22% of their portfolio WINNETKA, IL 5,002,0005.0m $7.4m $7.4m 2.22% Added +2.0m +2,002,000
11 Amundi 0.20% of their portfolio Paris, I0 5,000,0005.0m $735.1m $735.1m 0.20% New
12 BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.01% of their portfolio Paris, I0 4,750,0004.8m $7.0m $7.0m 0.01% New
13 Universal- Beteiligungs- und Servicegesellschaft mbH 0.01% of their portfolio FRANKFURT AM MAIN, 2M 4,545,0004.5m $6.7m $6.7m 0.01% Added +10.0k +10,000
14 SSI INVESTMENT MANAGEMENT LLC 0.41% of their portfolio Los Angeles, CA 4,098,0004.1m $6.0m $6.0m 0.41% Unchanged
15 Nicholas Investment Partners, LP 0.34% of their portfolio RANCHO SANTA FE, CA 3,165,0003.2m $4.7m $4.7m 0.34% Unchanged
16 STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio MADISON, WI 3,000,0003.0m $4.4m $4.4m 0.01% Unchanged
17 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 2,500,0002.5m $3.7m $3.7m 0.00% New
18 FRANKLIN RESOURCES INC 0.00% of their portfolio San Mateo, CA 2,235,0002.2m $3.3m $3.3m 0.00% Reduced -664.0k -664,000
19 WESTWOOD HOLDINGS GROUP INC 0.02% of their portfolio DALLAS, TX 2,100,0002.1m $2.1m $2.1m 0.02% Unchanged
20 NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 0.00% of their portfolio PHILADELPHIA, PA 2,090,0002.1m $3.1m $3.1m 0.00% First filing
21 Union Bancaire Privee, UBP SA 0.03% of their portfolio GENEVA 1, V8 1,980,0002.0m $2.5m $2.5m 0.03% Reduced -50.0k -50,000
22 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 1,428,0001.4m $2.1m $2.1m 0.00% Added +485.0k +485,000
23 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 1,419,0001.4m $2.1m $2.1m 0.00% New
24 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 1,203,0001.2m $1.8m $1.8m 0.00% Reduced -5.4m -5,407,000
25 AGF MANAGEMENT LTD 0.01% of their portfolio TORONTO, A6 950,000950.0k $1.4m $1.4m 0.01% Unchanged
26 Jefferies Financial Group Inc. 0.01% of their portfolio NEW YORK, NY 620,000620.0k $913.9k $913.9k 0.01% New
27 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 619,000619.0k $910.1k $910.1k 0.00% New
28 Calamos Advisors LLC 0.00% of their portfolio NAPERVILLE, IL 372,000372.0k $548.6k $548.6k 0.00% Added +7.0k +7,000
29 SEI INVESTMENTS CO 0.00% of their portfolio OAKS, PA 251,000251.0k $369.0k $369.0k 0.00% Unchanged
30 Central Pacific Bank - Trust Division 0.04% of their portfolio HONOLULU, HI 224,000224.0k $329.3k $329.3k 0.04% Unchanged
31 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 120,000120.0k $176.4k $176.4k 0.00% New
32 OPPENHEIMER ASSET MANAGEMENT INC. 0.00% of their portfolio NEW YORK, NY 82,00082.0k $120.6k $120.6k 0.00% Reduced -1.0k -1,000
33 Calamos Wealth Management LLC 0.00% of their portfolio NAPERVILLE, IL 66,00066.0k $97.3k $97.3k 0.00% Unchanged
34 VIRTUS ADVISERS, LLC 0.03% of their portfolio HARTFORD, CT 36,00036.0k $52.9k $52.9k 0.03% Reduced -11.0k -11,000
35 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 27,00027.0k $39.7k $39.7k 0.00% New
36 STEPHENS INC /AR/ 0.00% of their portfolio LITTLE ROCK, AR 24,00024.0k $35.3k $35.3k 0.00% Unchanged
37 Boussard & Gavaudan Investment Management LLP 2.34% of their portfolio London, X0 20,95421.0k $30.9m $30.9m 2.34% Added +7.9k +7,881
38 Balboa Wealth Partners 0.00% of their portfolio SCOTTSDALE, AZ 15,00015.0k $22.1k $22.1k 0.00% Unchanged
39 MML INVESTORS SERVICES, LLC 0.00% of their portfolio SPRINGFIELD, MA 10,00010.0k $14.7k $14.7k 0.00% New
40 NewEdge Advisors, LLC 0.00% of their portfolio NEW ORLEANS, LA 10,00010.0k $14.7k $14.7k 0.00% New
41 LOOMIS SAYLES & CO L P 0.00% of their portfolio BOSTON, MA 9,0439.0k $3.6m $3.6m 0.00% New
42 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 5,0005.0k $7.4k $7.4k 0.00% Reduced -75.0k -75,000
43 US BANCORP \DE\ 0.00% of their portfolio MINNEAPOLIS, MN 2,0002.0k $2.9k $2.9k 0.00% Unchanged
44 Steward Partners Investment Advisory, LLC 0.00% of their portfolio STAMFORD, CT 2,0002.0k $2.9k $2.9k 0.00% Unchanged
45 CoreCap Advisors, LLC 0.00% of their portfolio SOUTHFIELD, MI 2,0002.0k $2.9k $2.9k 0.00% New
46 Alken Asset Management Ltd 0.02% of their portfolio LONDON, X0 1,0001.0k $1.5k $1.5k 0.02% Unchanged
47 UBS Group AG 0.00% of their portfolio ZURICH, V8 670670 $985 $985 0.00% Unchanged
48 Erste Asset Management GmbH 0.00% of their portfolio VIENNA, C4 00 $0 $0 0.00% Unchanged