Arcellx, Inc. - COMMON STOCK (ACLX)

Historical Holders from Q1 2022 to Q4 2025

Type / Class
Equity / COMMON STOCK
Symbol
ACLX on Nasdaq
Shares outstanding
57,859,241
Price per share
$65.20
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares as of 30 Sep 2025
63,038,821
Holdings value
$5,175,117,679
% of all portfolios
0.01%
Share change
+2,241,540
Value change
+$190,810,895
Average buys %
+0%
Average sells %
-0%
Number of holders
206
Price from insider filings
$90.00
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Arcellx, Inc. - COMMON STOCK (ACLX) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
T. Rowe Price Investment Management, Inc. 17% +48% $866,626,126 +$300,351,037 9,604,634 +53% T. Rowe Price Investment Management, Inc. 30 Nov 2025
FMR LLC 10% -9.2% $473,004,163 -$44,527,920 5,761,317 -8.6% FMR LLC 30 Sep 2025
Elghandour Rami 6.9% $258,654,412 3,997,132 Rami Elghandour 27 Feb 2025
VANGUARD GROUP INC 7.2% +18% $257,879,445 +$42,389,191 3,985,156 +20% The Vanguard Group 31 Mar 2025
BlackRock, Inc. 6.4% $228,246,406 3,527,220 BlackRock, Inc. 31 Mar 2025
New Enterprise Associates 15, L.P. 5.5% -18% $200,278,848 -$45,223,076 3,055,360 -18% Scott D. Sandell 12 Aug 2025
PERCEPTIVE ADVISORS LLC 4.5% -16% $162,432,900 -$29,397,733 2,478,000 -15% Perceptive Advisors LLC 30 Jun 2025
As of 30 Sep 2025, Arcellx, Inc. - COMMON STOCK (ACLX) has 206 institutional shareholders filing 13F forms. They hold 63,038,821 shares .

Top 25 institutional shareholders own 94% of the company.

Filer Ownership Nb Shares Share Change % Portfolio % Holdings Value
GILEAD SCIENCES, INC. 12% 6,720,803 0% 31% $551,777,926
T. Rowe Price Investment Management, Inc. 11% 6,352,356 +227% 0.32% $521,529,000
FMR LLC 10% 5,761,317 -3.5% 0.02% $473,004,165
Paradigm Biocapital Advisors LP 8% 4,649,016 0% 11% $381,684,214
VANGUARD GROUP INC 6.8% 3,907,087 -0.96% 0% $320,771,843
BlackRock, Inc. 5.9% 3,387,896 -2.3% 0% $278,146,282
NEA Management Company, LLC 5.3% 3,045,262 -19% 14% $250,016,010
RA CAPITAL MANAGEMENT, L.P. 5.2% 3,036,527 0% 3.1% $249,298,867
PERCEPTIVE ADVISORS LLC 4.3% 2,468,353 -0.39% 5.9% $202,651,781
SR One Capital Management, LP 4.1% 2,346,630 0% 28% $192,658,323
STATE STREET CORP 2.6% 1,526,027 -4.2% 0% $125,286,817
PRICE T ROWE ASSOCIATES INC /MD/ 2.2% 1,264,051 -12% 0.01% $103,779,000
Vestal Point Capital, LP 2.2% 1,250,000 -55% 4.7% $102,625,000
AJU IB Investment Co., Ltd. 1.8% 1,047,557 0% 75% $86,004,430
CITADEL ADVISORS LLC 1.8% 1,021,453 +415% 0.07% $83,861,291
JANUS HENDERSON GROUP PLC 1.8% 1,013,921 -0.94% 0.04% $83,246,424
GEODE CAPITAL MANAGEMENT, LLC 1.6% 926,304 -3.7% 0% $76,063,242
JPMORGAN CHASE & CO 1.5% 882,503 -9.7% 0% $72,453,497
Capital World Investors 1.4% 783,011 0% 0.01% $64,285,203
Cormorant Asset Management, LP 1.3% 775,000 -3.1% 4.4% $63,627,500
BAMCO INC /NY/ 0.95% 550,236 +6.2% 0.12% $45,174,376
Schonfeld Strategic Advisors LLC 0.86% 500,315 +44% 0.29% $41,075,859
Affinity Asset Advisors, LLC 0.86% 500,000 +1% 3.8% $41,050,000
GOLDMAN SACHS GROUP INC 0.78% 448,441 -12% 0.01% $36,817,006
MORGAN STANLEY 0.75% 432,882 -16% 0% $35,539,678

Institutional Holders of Arcellx, Inc. - COMMON STOCK (ACLX) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price Investors
2025 Q4 4,448 $282,896 +$239,929 $65.20 5
2025 Q3 63,038,821 $5,175,117,679 +$190,810,895 $82.10 206
2025 Q2 60,837,024 $4,006,426,303 -$46,745,437 $65.85 200
2025 Q1 61,569,105 $4,042,657,536 +$146,759,811 $65.60 195
2024 Q4 59,173,488 $4,537,933,690 +$127,885,655 $76.69 208
2024 Q3 49,489,073 $4,134,912,072 -$113,389,722 $83.51 185
2024 Q2 50,216,931 $2,771,120,513 +$171,282,810 $55.19 164
2024 Q1 47,012,321 $3,269,162,577 +$35,796,177 $69.55 180
2023 Q4 46,737,558 $2,593,995,956 -$29,980,183 $55.50 154
2023 Q3 47,577,643 $1,707,089,455 -$7,341,800 $35.88 132
2023 Q2 48,066,751 $1,519,832,876 +$79,444,997 $31.62 134
2023 Q1 45,593,955 $1,403,613,948 +$114,227,065 $30.81 115
2022 Q4 41,987,329 $1,300,761,660 +$53,764,127 $30.98 123
2022 Q3 41,706,487 $782,853,521 +$127,574,774 $18.77 74
2022 Q2 34,934,000 $621,506,000 +$145,615,758 $18.08 67
2022 Q1 26,872,990 $357,855,000 +$357,824,000 $14.02 48