Allegro Microsystems, Inc. (ALGM) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

186,208,258Shares Outstanding

137,376,289Shares held by institutions

$6,308,319,191Value of institutional holdings

73.78%Institutional ownership %

-3.18%Shares Changed QoQ

285No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Allegro Microsystems, Inc. (NASDAQ:ALGM) has 285 institutional investors that have filed 13F reports for the period ending December 2025.

These investors collectively held 73.3% of Allegro Microsystems's outstanding shares in December 2025, down from 78.2% in September 2025.
They decreased total shares held in ALGM by -3.65% quarter over quarter, and investors in Allegro Microsystems increased 12.2% from a year ago.
Among the 285 funds, 131 bought more Allegro Microsystems shares, 117 sold down, and 37 held their ground.
Combined, these investors held 136.5Mn shares in ALGM for December 2025, down by 5.17Mn shares quarter on quarter, and down 11.73Mn shares year over year.
As of December 31, 2025, PEREGRINE CAPITAL MANAGEMENT LLC held the largest stake in Allegro Microsystems with 259.76K shares, accounting for 0.14% of total shares outstanding.
Top purchasers of ALGM stock for the quarter ending December 2025 included WEALTH ENHANCEMENT ADVISORY SERVICES, LLC (10.13K), Retirement Systems of Alabama (3.34K), Louisiana State Employees Retirement System (1.7K), Pictet Asset Management Holding SA (1.59K), EXCHANGE TRADED CONCEPTS, LLC (910).
The biggest sellers of Allegro Microsystems for the quarter ending December 2025 included MOODY NATIONAL BANK TRUST DIVISION (16.11K), PEREGRINE CAPITAL MANAGEMENT LLC (11.12K), SG Americas Securities, LLC (9.51K), Sterling Capital Management LLC (3.15K), YOUSIF CAPITAL MANAGEMENT, LLC (2.04K).
According to Business Quant data, leading holders of ALGM for December 2025 are PEREGRINE CAPITAL MANAGEMENT LLC (259.76K), Retirement Systems of Alabama (193.2K), YOUSIF CAPITAL MANAGEMENT, LLC (36.24K), Louisiana State Employees Retirement System (36.0K), Pictet Asset Management Holding SA (22.38K), MOODY NATIONAL BANK TRUST DIVISION (22.36K), TSG Advice Partners, LLC (17.19K), State of Alaska, Department of Revenue (12.4K), KEYBANK NATIONAL ASSOCIATION/OH (12.38K), Yorktown Management & Research Co Inc (11.3K).

285 Institutional Holders

137,376,289 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
FMR LLC	31 Dec, 2025	23,635,746	-3,832,097	-13.95%	$623,510,987.00
VANGUARD GROUP INC	31 Dec, 2025	14,202,528	-90,937	-0.64%	$374,662,689.00
Capital Research Global Investors	31 Dec, 2025	13,111,292	-3,713,430	-22.07%	$345,875,883.00
BlackRock, Inc.	31 Dec, 2025	12,201,457	824,039	7.24%	$321,874,446.00
Invesco Ltd.	31 Dec, 2025	7,651,051	2,338,624	44.02%	$201,834,725.00
Jpmorgan Chase & Co	31 Dec, 2025	7,347,422	-8,115,112	-52.48%	$193,825,019.00
State Street Corp	31 Dec, 2025	5,359,488	78,203	1.48%	$141,383,293.00
Clearbridge Investments, LLC	31 Dec, 2025	2,916,785	-16,021	-0.55%	$76,944,799.00
ADAGE CAPITAL PARTNERS GP, L.L.C.	31 Dec, 2025	2,803,944	1,227,317	77.84%	$73,968,043.00
CITADEL ADVISORS LLC	31 Dec, 2025	2,560,520	2,228,889	672.10%	$67,546,518.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	2,393,968	24,839	1.05%	$63,165,468.00
Morgan Stanley	31 Dec, 2025	2,233,136	294,107	15.17%	$58,910,171.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	2,140,147	169,597	8.61%	$56,461,794.00
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	31 Dec, 2025	2,036,212	2,036,212	0.00%	$53,715,000.00
Analog Century Management LP	31 Dec, 2025	1,890,072	-459,834	-19.57%	$49,860,099.00
Principal Financial Group Inc	31 Dec, 2025	1,742,296	-171,778	-8.97%	$45,961,768.00
Goldman Sachs Group Inc	31 Dec, 2025	1,592,658	1,247,312	361.18%	$42,014,318.00
NORGES BANK	31 Dec, 2025	1,457,805	1,457,805	0.00%	$38,456,896.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	1,362,418	67,425	5.21%	$35,940,587.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	1,341,739	539,113	67.17%	$35,395,075.00

1 - 20 of 285

Research Tools