Arcellx, Inc.

Historical 13F Holders

Symbol
ACLX
CUSIP
03940C100
All holders as of
Q2 2026
Type
Equity
Class
COMMON STOCK
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Every filing for 03940C100 since 12/18/2024, newest first.

Filer % of Class Filed
Paradigm Biocapital Advisors LP 13G/A Amendment 4
0% 8/14/2026
Event 6/30/2026
Vestal Point Capital, LP 13G/A Amendment 1
0% 5/15/2026
Event 3/31/2026
New Enterprise Associates 15, L.P. 13D/A Amendment 6
0% 4/30/2026
Event 4/28/2026
Rami Elghandour 13D/A Amendment 3 0% 4/28/2026
Event 4/28/2026
Gilead Sciences, Inc. 13D/A Amendment 1 100.0% 4/28/2026
Event 4/28/2026
Vanguard Group Inc 13G/A Amendment 2 0% 3/26/2026
Event 3/13/2026
T. Rowe Price Investment Management, Inc. 13G/A Amendment 3 4.5% 3/6/2026
Event 2/28/2026
FMR LLC 13G/A Amendment 7
0.5% 3/6/2026
Event 2/27/2026
Rami Elghandour 13D/A Amendment 2 6.4% 2/24/2026
Event 2/22/2026
New Enterprise Associates 15, L.P. 13D/A Amendment 5
5.3% 2/24/2026
Event 2/22/2026
Gilead Sciences, Inc. 13D 11.5% 2/23/2026
Event 2/23/2026
T. Rowe Price Investment Management, Inc. 13G/A Amendment 2 18.3% 2/17/2026
Event 12/31/2025
RA Capital Management, L.P. 13G/A Amendment 1
2.2% 2/17/2026
Event 12/31/2025
Paradigm Biocapital Advisors LP 13G/A Amendment 3
9.9% 2/17/2026
Event 12/31/2025
Vestal Point Capital, LP 13G
5.1% 2/17/2026
Event 12/31/2025
FMR LLC 13G/A Amendment 6
6.2% 2/5/2026
Event 12/31/2025
T. Rowe Price Investment Management, Inc. 13G/A Amendment 1 16.6% 12/5/2025
Event 11/30/2025
FMR LLC 13G/A Amendment 5
10.4% 11/5/2025
Event 9/30/2025
T. Rowe Price Investment Management, Inc. 13G 11.3% 9/8/2025
Event 8/31/2025
New Enterprise Associates 15, L.P. 13D/A Amendment 4
5.5% 8/14/2025
Event 8/12/2025
Perceptive Advisors LLC 13G/A Amendment 4
4.5% 8/14/2025
Event 6/30/2025
Perceptive Advisors LLC 13G/A Amendment 3
5.3% 5/15/2025
Event 3/31/2025
New Enterprise Associates 15, L.P. 13D/A Amendment 3
6.8% 5/12/2025
Event 5/8/2025
FMR LLC 13G/A Amendment 4
11.5% 5/12/2025
Event 3/31/2025
Vanguard Group Inc 13G/A Amendment 1 7.3% 4/30/2025
Event 3/31/2025
BlackRock, Inc. 13G/A Amendment 2 6.4% 4/17/2025
Event 3/31/2025
Rami Elghandour 13D/A Amendment 1 6.9% 2/27/2025
Event 2/27/2025
FMR LLC 13G/A Amendment 3
14.7% 2/12/2025
Event 12/31/2024
Vanguard Group Inc 13G 6.2% 1/30/2025
Event 12/31/2024

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q2 2 30.0 k $3.43 M
2026 Q1 267 57.0 M $6.52 B
2025 Q4 232 72.3 M $4.71 B
2025 Q3 224 63.9 M $5.25 B
2025 Q2 218 61.4 M $4.01 B
2025 Q1 216 61.9 M $4.06 B
2024 Q4 227 59.2 M $4.54 B
2024 Q3 207 49.7 M $4.15 B
2024 Q2 176 51.9 M $2.86 B
2024 Q1 194 50.3 M $3.50 B
2023 Q4 171 49.6 M $2.75 B
2023 Q3 143 48.7 M $1.75 B
2023 Q2 145 49.3 M $1.56 B
2023 Q1 126 46.7 M $1.44 B
2022 Q4 133 44.2 M $1.37 B
2022 Q3 79 42.9 M $805 M
2022 Q2 69 34.9 M $622 M
2022 Q1 50 26.9 M $358 M