ALT5 Sigma Corp (ALTS) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

168,834,483Shares Outstanding

2,610,058Shares held by institutions

$3,732,383Value of institutional holdings

61.44%Institutional ownership %

38.28%Shares Changed QoQ

150No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

ALT5 Sigma Corp (NASDAQ:ALTS) currently has 150 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

These investors collectively held 61.4% of the company's total shares outstanding in December 2025, up from 51.6% in September 2025.
The company experienced a 38.28% quarterly change in institutional shares held, alongside an increase of 316.67% in total owners annually.
The latest 13F cycle for ALT5 Sigma reveals that of 150 total investors, 78 funds grew their exposure, whereas 50 reduced theirs and 22 made no changes.
Collectively, institutional investors increased their stake in ALT5 Sigma to 103.73Mn shares as of December 2025, a change that is up by 28.72Mn shares quarter on quarter and up 101.91Mn shares year over year.
As of December 31, 2025, CRCM LP held ALT5 Sigma's largest shareholding position with over 10.94Mn shares, representing 6.48% of total outstanding shares.
Among the most significant buyers of ALT5 Sigma during December 2025 were CRCM LP (8.63Mn), CRCM LP (8.63Mn), Diametric Capital, LP (5.86Mn), Diametric Capital, LP (5.86Mn), PRELUDE CAPITAL MANAGEMENT, LLC (2.74Mn).
Leading sellers of ALT5 Sigma stock in December 2025 included JANE STREET GROUP, LLC (3.40Mn), JANE STREET GROUP, LLC (3.40Mn), SUSQUEHANNA INTERNATIONAL GROUP, LLP (2.05Mn), SUSQUEHANNA INTERNATIONAL GROUP, LLP (2.05Mn), BANK OF AMERICA CORP /DE/ (830.75K).
The top 10 institutional holders of ALT5 Sigma for the quarter ending December 2025 included CRCM LP (10.94Mn), CRCM LP (10.94Mn), Diametric Capital, LP (9.40Mn), Diametric Capital, LP (9.40Mn), VANGUARD GROUP INC (5.86Mn), VANGUARD GROUP INC (5.86Mn), PRELUDE CAPITAL MANAGEMENT, LLC (5.06Mn), PRELUDE CAPITAL MANAGEMENT, LLC (5.06Mn), BlackRock, Inc. (3.16Mn), BlackRock, Inc. (3.16Mn).

150 Institutional Holders

2,610,058 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
CRCM LP	31 Dec, 2025	10,941,280	8,629,103	373.20%	$12,035,408.00
CRCM LP	31 Dec, 2025	10,941,280	8,629,103	373.20%	$12,035,408.00
Diametric Capital, LP	31 Dec, 2025	9,402,946	5,858,978	165.32%	$10,343,240.00
Diametric Capital, LP	31 Dec, 2025	9,402,946	5,858,978	165.32%	$10,343,240.00
VANGUARD GROUP INC	31 Dec, 2025	5,856,146	-270,249	-4.41%	$6,441,761.00
VANGUARD GROUP INC	31 Dec, 2025	5,856,146	-270,249	-4.41%	$6,441,761.00
PRELUDE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	5,055,089	2,744,329	118.76%	$5,560,598.00
PRELUDE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	5,055,089	2,744,329	118.76%	$5,560,598.00
BlackRock, Inc.	31 Dec, 2025	3,162,021	1,587,485	100.82%	$3,478,223.00
BlackRock, Inc.	31 Dec, 2025	3,162,021	1,587,485	100.82%	$3,478,223.00
JANE STREET GROUP, LLC	31 Dec, 2025	3,051,697	-3,398,320	-52.69%	$3,356,867.00
JANE STREET GROUP, LLC	31 Dec, 2025	3,051,697	-3,398,320	-52.69%	$3,356,867.00
ExodusPoint Capital Management, LP	31 Dec, 2025	2,254,910	-733,300	-24.54%	$2,480,401.00
ExodusPoint Capital Management, LP	31 Dec, 2025	2,254,910	-733,300	-24.54%	$2,480,401.00
UBS Group AG	31 Dec, 2025	1,904,567	1,222,690	179.31%	$2,095,025.00
UBS Group AG	31 Dec, 2025	1,904,567	1,222,690	179.31%	$2,095,025.00
CITADEL ADVISORS LLC	31 Dec, 2025	1,507,892	1,274,146	545.10%	$1,658,681.00
CITADEL ADVISORS LLC	31 Dec, 2025	1,507,892	1,274,146	545.10%	$1,658,681.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	1,331,963	12,400	0.94%	$1,465,816.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	1,331,963	12,400	0.94%	$1,465,816.00

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