Security key
02043Q107
ALNYLAM PHARMACEUTICALS, INC. - Common Stock (ALNY)
CUSIP: 02043Q107
Q1 2023 13F Holders as of 31 Mar 2023
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 119,657,504
- Total 13F value
- $23,956,079,414
- Share change
- +186,825
- Put/Call ratio
- 68%
- SEC-reported price per share
- $200.32
- Number of holders
- 469
- Value change
- +$6,809,245
- Number of buys
- 219
- Number of sells
- 213
- Shares outstanding
- 133,131,695
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2023
Institutions
469
Top holders
10
ALNY full security history
Ownership snapshot
Full 13F holder table
ALNYLAM PHARMACEUTICALS, INC. SEC filings
ALNYLAM PHARMACEUTICALS, INC. company facts
Broader feeds
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
0/15
Latest evidence
31 Dec 2022
13F
Highest disclosed value: $3,895,154,516
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
Capital World Investors has the largest disclosed position value at $3.9B.
0 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.
Open SEC evidence
Opens Capital World Investors's linked filing trail.
Disclosed position value
Top 5
Capital World Investors
$3.9B
FMR LLC
$3.21B
VANGUARD GROUP INC
$2.73B
BAILLIE GIFFORD & CO
$2.24B
BlackRock Finance, Inc.
$2.02B
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
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
|
—
denominator unverified
|
$3,895,154,516
16,390,275 shares
|
— | 31 Dec 2022 |
| FMR LLC |
13F
Company
|
—
denominator unverified
|
$3,211,146,412
13,512,083 shares
|
— | 31 Dec 2022 |
| VANGUARD GROUP INC |
13F
Company
|
—
denominator unverified
|
$2,734,666,118
11,507,116 shares
|
— | 31 Dec 2022 |
| BAILLIE GIFFORD & CO |
13F
Company
|
—
denominator unverified
|
$2,235,780,544
9,407,871 shares
|
— | 31 Dec 2022 |
| BlackRock Finance, Inc. |
13F
Company
|
—
denominator unverified
|
$2,017,501,159
8,489,380 shares
|
— | 31 Dec 2022 |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
Company
|
—
denominator unverified
|
$1,481,530,538
6,234,086 shares
|
— | 31 Dec 2022 |
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 Q1 2023
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
469
Shares
119,657,504
Rows available
469
| 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 Q1 2023 vs Q1 2023 Across Filers
Q1 2023 holders
469
Q1 2023 holders
469
Holder diff
0
| Investor | Q1 2023 Shares | Q1 2023 Shares | Share Diff | Share Chg % | Q1 2023 value | Q1 2023 value | Value change | Value Chg % |
|---|