ALNY

Alnylam Pharmaceuticals Inc

Latest period2026 - Q1Total superinvestors789

Top 10 Superinvestors by Shares Owned

This chart shows the top 10 superinvestors based on the number of shares they owned in 2025-Q4 and 2026-Q1. According to the most recent SEC 13F filing, 789 superinvestors own shares of Alnylam Pharmaceuticals Inc (ALNY), although recent data may remain incomplete due to pending filings.

Quarter-over-Quarter Change (%)

This chart highlights the quarter-over-quarter change (%) in the number of superinvestors holding Alnylam Pharmaceuticals Inc (ALNY), the total shares they held, and the total reported dollar value. It gives a clear view of whether there is ongoing momentum. The dotted lines at the top and bottom adjust longer bars to keep smaller data points visible for better comparison.

Superinvestors' Activity (%) Over the Last 4 Quarters

This chart shows superinvestors' activity with Alnylam Pharmaceuticals Inc (ALNY) over the last four quarters, highlighting the percentage of investors who added, increased, decreased, held, or exited their positions, revealing shifts in sentiment over time.

Superinvestors' Past Actions

This chart displays superinvestors' past actions with Alnylam Pharmaceuticals Inc (ALNY) over the last 10 years (40 quarters), helping to visualize the collective momentum and investment trends over time.

Superinvestors ownership

SuperinvestorPortfolio %Reported Value
Stephanie J. Brown@Fmr Llc
Recent Activity
Decreased -8.31%
0.26%
$4.824B
14.579M shares@ 330.88 avg price
Alan N. Berro@Capital World Investors
Recent Activity
Decreased -33.73%
0.49%
$3.574B
10.802M shares@ 330.84 avg price
Spencer Fleming@Blackrock, Inc.
Recent Activity
Increased 0.43%
0.07%
$3.456B
10.445M shares@ 330.88 avg price
Martin Romo@Capital Research Global Investors
Recent Activity
Increased 39.7%
0.49%
$3.133B
9.471M shares@ 330.85 avg price
Christine M. Buchanan@Vanguard Portfolio Management Llc
Recent Activity
New Position
0.12%
$2.148B
6.491M shares@ 330.88 avg price
Michael T. Lees@Jpmorgan Chase & Co
Recent Activity
Increased 33.98%
0.13%
$1.999B
6.324M shares@ 316.1 avg price
Christine M. Buchanan@Vanguard Capital Management Llc
Recent Activity
New Position
0.05%
$1.968B
5.947M shares@ 330.87 avg price
Ellen York@T. Rowe Price Investment Management, Inc.
Recent Activity
Increased 78.78%
1.19%
$1.718B
5.193M shares@ 330.88 avg price
ELIZABETH SCHAEFER@State Street Corp
Recent Activity
Increased 2.91%
0.04%
$1.099B
3.323M shares@ 330.87 avg price
Laura Doherty@Geode Capital Management, Llc
Recent Activity
Increased 0.37%
0.06%
$884.566M
2.66M shares@ 332.5 avg price

1-10 of 789