Arcellx, Inc. - Common Stock, par value $0.001 per share (ACLX)
CUSIP: 03940C100
Q1 2026 13F Holders as of 31 Mar 2026
- Type / Class
- Equity / Common Stock, par value $0.001 per share
- Shares outstanding
- 100
- Total 13F shares
- 56,278,135
- Share change
- -11,599,018
- Total reported value
- $6,432,267,481
- Put/Call ratio
- 31%
- Price per share
- $114.82
- Number of holders
- 234
- Value change
- -$827,226,445
- Number of buys
- 144
- Number of sells
- 126
Quarterly Holders Quick Answers
What is CUSIP 03940C100?
CUSIP 03940C100 identifies ACLX - Arcellx, Inc. - Common Stock, par value $0.001 per share in SEC institutional holdings data.
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- Latest 13F filings for newly reported positions across managers.
- Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
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Explore More Reporting Periods
Jump to adjacent filing periods for faster comparison and easier crawl discovery.
- Previous quarter: Q4 2025
Recent filing periods for CUSIP 03940C100:
Top shareholders of ACLX - Arcellx, Inc. - Common Stock, par value $0.001 per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| T. Rowe Price Investment Management, Inc. |
13F
13D/G
|
Company |
4.5%
from 13D/G
|
10,560,425
|
$688,540,000 | — | 31 Dec 2025 | |
| GILEAD SCIENCES, INC. |
13F
3/4/5
|
Company · 10%+ Owner |
6720803%
|
6,720,803
|
$438,196,356 | — | 31 Dec 2025 | |
| Paradigm Biocapital Advisors LP |
13D/G
13F
|
Company |
9.9%
|
5,724,016
|
$379,330,540 | $0 | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
4081519%
|
4,081,519
|
$266,115,040 | — | 31 Dec 2025 | |
| NEA Partners 15, L.P. |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
4,745,262
|
$262,260,666 | — | 20 Dec 2022 | |
| New Enterprise Associates 15, L.P. |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
4,745,262
|
$262,260,666 | — | 20 Dec 2022 | |
| FMR LLC |
13F
13D/G
|
Company |
0.5%
from 13D/G
|
3,563,728
|
$232,355,097 | — | 31 Dec 2025 | |
| BlackRock, Inc. |
13F
13D/G
|
Company |
6.4%
from 13D/G
|
3,548,787
|
$231,380,928 | — | 31 Dec 2025 | |
| Novo Holdings A/S |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
4,016,878
|
$222,004,412 | — | 08 Feb 2022 | |
| NEA Management Company, LLC |
13F
|
Company |
3045262%
|
3,045,262
|
$198,551,082 | — | 31 Dec 2025 | |
| Vestal Point Capital, LP |
13F
|
Company |
2925000%
|
2,925,000
|
$190,710,000 | — | 31 Dec 2025 | |
| PERCEPTIVE ADVISORS LLC |
13D/G
13F
|
Company |
4.5%
|
2,478,000
|
$162,432,900 | -$29,397,733 | 30 Jun 2025 | |
| SR ONE CAPITAL MANAGEMENT, LP |
13F
|
Company |
2346630%
|
2,346,630
|
$153,000,276 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
1998503%
|
1,998,503
|
$130,302,396 | — | 31 Dec 2025 | |
| Lewis T. "rusty" Williams |
3/4/5
|
Director |
—
class O/S missing
|
2,095,114
|
$115,792,551 | — | 08 Feb 2022 | |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
|
Company |
1610801%
|
1,610,801
|
$105,025,000 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
1500223%
|
1,500,223
|
$97,814,539 | — | 31 Dec 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
1454477%
|
1,454,477
|
$94,831,912 | — | 31 Dec 2025 | |
| SR ONE CAPITAL MANAGEMENT, LLC |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
1,658,780
|
$91,677,287 | — | 11 May 2023 | |
| RA CAPITAL MANAGEMENT, L.P. |
13D/G
13F
|
Company |
2.2%
|
1,267,156
|
$83,974,428 | $0 | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
958057%
|
958,057
|
$62,478,756 | — | 31 Dec 2025 | |
| JANUS HENDERSON GROUP PLC |
13F
|
Company |
919578%
|
919,578
|
$59,957,552 | — | 31 Dec 2025 | |
| Woodline Partners LP |
13F
|
Company |
737824%
|
737,824
|
$48,106,125 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
668480%
|
668,480
|
$43,584,896 | — | 31 Dec 2025 | |
| BAMCO INC /NY/ |
13F
|
Company |
609697%
|
609,697
|
$39,752,244 | — | 31 Dec 2025 | |
| Affinity Asset Advisors, LLC |
13F
|
Company |
523725%
|
523,725
|
$34,146,870 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
518404%
|
518,404
|
$33,799,946 | — | 31 Dec 2025 | |
| LORD, ABBETT & CO. LLC |
13F
|
Company |
449634%
|
449,634
|
$29,316,000 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
427769%
|
427,769
|
$27,890,538 | — | 31 Dec 2025 | |
| AMERICAN CENTURY COMPANIES INC |
13F
|
Company |
419080%
|
419,080
|
$27,324,142 | — | 31 Dec 2025 | |
| Hudson Bay Capital Management LP |
13F
|
Company |
400942%
|
400,942
|
$26,141,418 | — | 31 Dec 2025 | |
| Pictet Asset Management Holding SA |
13F
|
Company |
342612%
|
342,612
|
$22,338,302 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
339813%
|
339,813
|
$22,155,808 | — | 31 Dec 2025 | |
| Hood River Capital Management LLC |
13F
|
Company |
335500%
|
335,500
|
$21,874,600 | — | 31 Dec 2025 | |
| STEMPOINT CAPITAL LP |
13F
|
Company |
332860%
|
332,860
|
$21,702,472 | — | 31 Dec 2025 | |
| Fisher Asset Management, LLC |
13F
|
Company |
322855%
|
322,855
|
$21,050,146 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
321793%
|
321,793
|
$20,980,903 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
316612%
|
316,612
|
$20,643,103 | — | 31 Dec 2025 | |
| TD ASSET MANAGEMENT INC |
13F
|
Company |
300856%
|
300,856
|
$19,615,811 | — | 31 Dec 2025 | |
| DEUTSCHE BANK AG\ |
13F
|
Company |
233592%
|
233,592
|
$15,230,199 | — | 31 Dec 2025 | |
| AJU IB Investment Co., Ltd. |
13F
|
Company |
223486%
|
223,486
|
$14,571,287 | — | 31 Dec 2025 | |
| ExodusPoint Capital Management, LP |
13F
|
Company |
217424%
|
217,424
|
$14,176,045 | — | 31 Dec 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
214776%
|
214,776
|
$14,003,396 | — | 31 Dec 2025 | |
| Integral Health Asset Management, LLC |
13F
|
Company |
200000%
|
200,000
|
$13,040,000 | — | 31 Dec 2025 | |
| BARCLAYS PLC |
13F
|
Company |
196772%
|
196,772
|
$12,829,534 | — | 31 Dec 2025 | |
| Rock Springs Capital Management LP |
13F
|
Company |
169859%
|
169,859
|
$11,074,807 | — | 31 Dec 2025 | |
| VOYA INVESTMENT MANAGEMENT LLC |
13F
|
Company |
168680%
|
168,680
|
$10,997,936 | — | 31 Dec 2025 | |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC |
13F
|
Company |
161035%
|
161,035
|
$10,499,481 | — | 31 Dec 2025 | |
| CITIGROUP INC |
13F
|
Company |
156519%
|
156,519
|
$10,205,039 | — | 31 Dec 2025 | |
| Catalio Capital Management, LP |
13F
|
Company |
156109%
|
156,109
|
$10,178,307 | — | 31 Dec 2025 |
Institutional Holders of Arcellx, Inc. - Common Stock, par value $0.001 per share (ACLX) as of Q1 2026
As of 31 Mar 2026,
Arcellx, Inc. - Common Stock, par value $0.001 per share (ACLX) was held by
234 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
56,278,135 shares.
The largest 10 holders included
GILEAD SCIENCES, INC., Paradigm Biocapital Advisors LP, BlackRock, Inc., NEA Management Company, LLC, Pentwater Capital Management LP, VANGUARD CAPITAL MANAGEMENT LLC, VANGUARD PORTFOLIO MANAGEMENT LLC, SR One Capital Management, LP, FIL Ltd, and HBK INVESTMENTS L P.
This page lists
235
institutional shareholders reporting positions in this security
for the Q1 2026 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
217
Q1 2026 holders
234
Holder diff
17
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 Value $ | Q1 2026 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.