Security key
02043Q107
ALNYLAM PHARMACEUTICALS, INC. - Common Stock (ALNY)
CUSIP: 02043Q107
Q4 2023 13F Holders as of 31 Dec 2023
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 117,037,909
- Total 13F value
- $22,406,153,370
- Share change
- -777,186
- Put/Call ratio
- 120%
- SEC-reported price per share
- $191.41
- Number of holders
- 491
- Value change
- -$144,088,009
- Number of buys
- 235
- Number of sells
- 201
- Shares outstanding
- 133,131,695
Holder snapshot
7 signals
Show 1 more signal
Security identity
1 source field
Report period
Q4 2023
Institutions
491
Top holders
10
ALNY full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2024
Previous quarter: Q3 2023
ALNYLAM PHARMACEUTICALS, INC. SEC filings
ALNYLAM PHARMACEUTICALS, INC. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 02043Q107
Recent filing periods:
Ownership snapshot
Top reported holders of ALNY - ALNYLAM PHARMACEUTICALS, INC. - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Capital World Investors
Disclosed value leader
Capital World Investors
Comparable rows
15/15
Latest evidence
30 Sep 2023
13F
Lead comparable stake: 12%
Showing 1-6 of 15 holder rows.
Quick read
Capital World Investors leads the comparable SEC ownership view at 12%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Comparable ownership
Top 5
Capital World Investors
12%
VANGUARD GROUP INC
8.8%
FMR LLC
8.5%
BlackRock Finance, Inc.
6.3%
BAILLIE GIFFORD & CO
6.1%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Capital World Investors |
13F
Company
|
12%
|
$2,927,298,487
16,529,308 shares
|
— | 30 Sep 2023 |
| VANGUARD GROUP INC |
13F
Company
|
8.8%
|
$2,064,424,769
11,656,831 shares
|
— | 30 Sep 2023 |
| FMR LLC |
13F
Company
|
8.5%
|
$1,997,937,000
11,281,406 shares
|
— | 30 Sep 2023 |
| BlackRock Finance, Inc. |
13F
Company
|
6.3%
|
$1,486,401,010
8,393,004 shares
|
— | 30 Sep 2023 |
| BAILLIE GIFFORD & CO |
13F
Company
|
6.1%
|
$1,445,691,917
8,163,139 shares
|
— | 30 Sep 2023 |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
Company
|
4.8%
|
$1,139,074,259
6,431,814 shares
|
— | 30 Sep 2023 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2023
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
491
Shares
117,037,909
Rows available
491
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2023 vs Q3 2023 Across Filers
Q3 2023 holders
445
Q4 2023 holders
491
Holder diff
46
| Investor | Q3 2023 Shares | Q4 2023 Shares | Share Diff | Share Chg % | Q3 2023 value | Q4 2023 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend