Security key
03940C100
Arcellx, Inc. - Common Stock, $0.001 par value per share (ACLX)
CUSIP: 03940C100
Q1 2024 13F Holders as of 31 Mar 2024
- Security type / class
- Equity / Common Stock, $0.001 par value per share
- Total 13F shares
- 47,012,321
- Total 13F value
- $3,269,162,577
- Share change
- +324,272
- Put/Call ratio
- 198%
- SEC-reported price per share
- $69.55
- Number of holders
- 180
- Value change
- +$35,796,177
- Number of buys
- 108
- Number of sells
- 71
- Shares outstanding
- 100
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 2024
Institutions
180
Top holders
10
ACLX full security history
Ownership snapshot
Full 13F holder table
Arcellx, Inc. SEC filings
Arcellx, Inc. company facts
Broader feeds
Ownership snapshot
Top reported holders of ACLX - Arcellx, Inc. - Common Stock, $0.001 par value per share (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
PERCEPTIVE ADVISORS LLC
Disclosed value leader
PERCEPTIVE ADVISORS LLC
Comparable rows
15/15
Latest evidence
31 Dec 2023
13F
Lead comparable stake: 4544809%
Showing 1-6 of 15 holder rows.
Quick read
PERCEPTIVE ADVISORS LLC leads the comparable SEC ownership view at 4544809%.
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.
Open SEC evidence
Opens PERCEPTIVE ADVISORS LLC's linked filing trail.
Comparable ownership
Top 5
PERCEPTIVE ADVISORS LLC
4544809%
FMR LLC
4379169%
NEA Management Company, LLC
3745262%
Paradigm Biocapital Advisors LP
3658624%
SR ONE CAPITAL MANAGEMENT, LP
3146630%
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 |
|---|---|---|---|---|---|
| PERCEPTIVE ADVISORS LLC |
13F
Company
|
4544809%
|
$252,236,900
4,544,809 shares
|
— | 31 Dec 2023 |
| FMR LLC |
13F
Company
|
4379169%
|
$243,043,880
4,379,169 shares
|
— | 31 Dec 2023 |
| NEA Management Company, LLC |
13F
Company
|
3745262%
|
$207,862,041
3,745,262 shares
|
— | 31 Dec 2023 |
| Paradigm Biocapital Advisors LP |
13F
Company
|
3658624%
|
$203,053,632
3,658,624 shares
|
— | 31 Dec 2023 |
| SR ONE CAPITAL MANAGEMENT, LP |
13F
Company
|
3146630%
|
$174,637,965
3,146,630 shares
|
— | 31 Dec 2023 |
| BlackRock Finance, Inc. |
13F
Company
|
3018538%
|
$167,528,863
3,018,538 shares
|
— | 31 Dec 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 Q1 2024
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
180
Shares
47,012,321
Rows available
180
| 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 2024 vs Q1 2024 Across Filers
Q1 2024 holders
180
Q1 2024 holders
180
Holder diff
0
| Investor | Q1 2024 Shares | Q1 2024 Shares | Share Diff | Share Chg % | Q1 2024 value | Q1 2024 value | Value change | Value Chg % |
|---|