13FBOX
ALNYLAM PHARMACEUTICALS INC · 13F Institutional Holdings
Options Calculator Rankings
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ALNYLAM PHARMACEUTICALS INC

ALNY
Institutions
46
Combined AUM (Q2 2026)
$398.8M
Combined Shares (Q2 2026)
332.0M
Overall Trend
Increase
All institutions combined
Basis: holder count and combined value / shares merge all share classes of the same company (e.g. Class A / C); each institution is counted once, and value & shares are the sum across classes.
📥 Inflow (Q1 2026→Q2 2026)
+65.1M
21 institutions added · 11 new buys
Est. buy amount
📤 Outflow (Q1 2026→Q2 2026)
-42.2M
18 institutions reduced · 9 exits
Est. sell amount
⚖️ Net Share Change
+22.9M
Net Buy
💰 Est. Net Value
≈ —
est. price
Latest AUM (Q2 2026)
$398.8M
Institutions
46
New Buys
11
Adds
10
Reduces
9
Exits
9
Unchanged
16
Ownership TrendPortfolio %Prev Q %RankQ2 2026 ValueQ2 2026 SharesPrev Q ValuePrev Q SharesShares ChangeAction
STEELHEAD PARTNERS LLC
5.57%5.54%#1$78.2M65.0M$77.1M60.0M+5.0M+8.33%Add
BNP PARIBAS FINANCIAL MARKETS
0.02%0.02%#14$50.9M42.3M$41.4M32.3M+10.0M+30.94%Add
Alberta Investment Management Corp
0.17%0.19%#7$30.1M25.0M$32.1M25.0M00.00%Unchanged
DeepCurrents Investment Group LLC
0.99%1.17%#3$28.9M24.0M$30.9M24.0M00.00%Unchanged
BANK OF AMERICA CORP /DE/
<0.01%<0.01%#27$22.5M18.8M$14.0M10.9M+7.8M+71.92%Add
FMR LLC
<0.01%<0.01%#30$20.6M17.1M$23.6M18.4M-1.3M-7.21%Reduce
MACKAY SHIELDS LLC
0.03%0.03%#12$17.9M14.8M$19.1M14.8M-10,000-0.07%Reduce
MANUFACTURERS LIFE INSURANCE COMPANY, THE
0.01%0.02%#18$16.5M13.8M$17.8M13.8M00.00%Unchanged
Universal- Beteiligungs- und Servicegesellschaft mbH
0.02%0.02%#16$12.7M10.5M$10.6M8.2M+2.3M+27.88%Add
BNP Paribas Asset Management Holding S.A.
0.01%#19$11.4M9.6M$00+9.6MNew Buy
STATE STREET CORP
<0.01%<0.01%#32$11.1M9.3M$29.3M22.8M-13.5M-59.29%Reduce
CSS LLC/IL
0.43%1.14%#5$10.9M9.1M$23.9M18.6M-9.5M-51.18%Reduce
AMERIPRISE FINANCIAL INC
<0.01%#25$10.7M8.9M$00+8.9MNew Buy
BlackRock, Inc.
<0.01%<0.01%#39$9.6M8.0M$21.3M16.6M-8.6M-51.81%Reduce
TORONTO DOMINION BANK
0.01%#21$7.8M6.5M$00+6.5MNew Buy
CITIGROUP INC
<0.01%<0.01%#24$7.6M6.3M$7.2M5.7M+692,000+12.23%Add
ZAZOVE ASSOCIATES LLC
0.47%#4$6.1M5.1M$00+5.1MNew Buy
Amundi
<0.01%<0.01%#26$6.0M5.0M$6.4M5.0M00.00%Unchanged
Warberg Asset Management LLC
1.09%1.07%#2$6.0M5.0M$6.4M5.0M00.00%Unchanged
SSI INVESTMENT MANAGEMENT LLC
0.29%0.36%#6$4.9M4.1M$5.3M4.1M00.00%Unchanged
JPMORGAN CHASE & CO
<0.01%<0.01%#37$3.8M3.2M$1.3M1.1M+2.1M+203.43%Add
EFG International AG
0.07%0.05%#10$3.6M3.0M$2.6M2.0M+1.0M+50.00%Add
FRANKLIN RESOURCES INC
<0.01%<0.01%#31$2.7M2.2M$2.9M2.2M00.00%Unchanged
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.
<0.01%<0.01%#23$2.5M2.1M$2.7M2.1M-31,000-1.48%Reduce
Union Bancaire Privee, UBP SA
0.03%0.03%#11$2.2M2.1M$2.2M2.0M+150,000+7.58%Add
MORGAN STANLEY
<0.01%#41$2.1M1.7M$00+1.7MNew Buy
Invesco Ltd.
<0.01%<0.01%#38$1.8M1.5M$3.2M2.5M-1.0M-40.00%Reduce
Capital World Investors
<0.01%#36$1.8M1.5M$00+1.5MNew Buy
BARCLAYS PLC
<0.01%#34$1.5M1.3M$00+1.3MNew Buy
KIM, LLC
0.12%0.13%#9$1.2M1.0M$1.3M1.0M00.00%Unchanged
AGF MANAGEMENT LTD
<0.01%0.01%#22$1.1M950,000$1.2M950,00000.00%Unchanged
ADVENT CAPITAL MANAGEMENT /DE/
0.02%#15$1.0M850,000$00+850,000New Buy
WELLS FARGO & COMPANY/MN
<0.01%<0.01%#40$798,825664,000$1.2M910,000-246,000-27.03%Reduce
Zurcher Kantonalbank (Zurich Cantonalbank)
<0.01%#29$478,160400,000$00+400,000New Buy
GOLDMAN SACHS GROUP INC
<0.01%<0.01%#43$449,678374,000$479,281374,00000.00%Unchanged
SEI INVESTMENTS CO
<0.01%<0.01%#35$301,789251,000$321,657251,00000.00%Unchanged
Central Pacific Bank - Trust Division
0.03%0.04%#13$269,326224,000$287,056224,00000.00%Unchanged
Bank of New York Mellon Corp
<0.01%<0.01%#42$258,656215,000$276,679215,00000.00%Unchanged
Virtus Fixed Income Advisers, LLC
0.12%#8$193,578161,000$00+161,000New Buy
OPPENHEIMER ASSET MANAGEMENT INC.
<0.01%<0.01%#28$96,18880,000$103,80281,000-1,000-1.23%Reduce
VIRTUS ADVISERS, LLC
0.02%0.02%#17$43,28536,000$46,13436,00000.00%Unchanged
LPL Financial LLC
<0.01%#44$36,94531,000$00+31,000New Buy
STEPHENS INC /AR/
<0.01%<0.01%#33$28,85624,000$30,75624,00000.00%Unchanged
UBS Group AG
<0.01%<0.01%#46$27,65423,000$29,05222,670+330+1.46%Add
Alken Asset Management Ltd
0.01%0.01%#20$1,9091,600$1,2791,000+600+60.00%Add
Steward Partners Investment Advisory, LLC
<0.01%<0.01%#45$1,2021,000$1,2821,00000.00%Unchanged

🧭 Institutional Sector Flow Heatmap

Net Outflow Net Inflow