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Alnylam Pharmaceuticals
ALNY
ALNY
785 hedge funds and large institutions have $42.5B invested in Alnylam Pharmaceuticals in 2026 Q1 according to their latest regulatory filings, with 102 funds opening new positions, 320 increasing their positions, 257 reducing their positions, and 153 closing their positions.
New
Increased
Maintained
Reduced
Closed
120% more call options, than puts
Call options by funds: $450M | Put options by funds: $205M
25% more repeat investments, than reductions
Existing positions increased: 320 | Existing positions reduced: 257
1.26% less ownership
Funds ownership: 98.23% → 96.97% (-1.3%)
7% less funds holding
Funds holding: 848 → 785 (-63)
18% less capital invested
Capital invested by funds: $51.7B → $42.5B (-$9.26B)
25% less funds holding in top 10
Funds holding in top 10: 4 → 3 (-1)
33% less first-time investments, than exits
New positions opened: 102 | Existing positions closed: 153
Holders
785
Holders Change
-63
Holders Change %
-7.43%
% of All Funds
9.67%
Holding in Top 10
3
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-25%
% of All Funds
0.04%
New
102
Increased
320
Reduced
257
Closed
153
Calls
$450M
Puts
$205M
Net Calls
+$245M
Net Calls Change
-$20.6M
Top Buyers
| 1 |
T. Rowe Price Investment Management
Baltimore,
Maryland
|
+$1.17B |
| 2 |
Capital Research Global Investors
Los Angeles,
California
|
+$916M |
| 3 |
JP Morgan Chase
New York
|
+$546M |
| 4 |
Two Sigma Investments
New York
|
+$468M |
| 5 |
ClearBridge Investments
New York
|
+$258M |
Top Sellers
| 1 |
Capital World Investors
Los Angeles,
California
|
-$1.87B |
| 2 |
Fidelity Investments
Boston,
Massachusetts
|
-$450M |
| 3 |
Arrowstreet Capital
Boston,
Massachusetts
|
-$448M |
| 4 |
Invesco
Atlanta,
Georgia
|
-$297M |
| 5 |
1832 Asset Management
Toronto,
Ontario, Canada
|
-$175M |
