Allegro Microsystems, Inc. (ALGM) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

186,208,258Shares Outstanding

137,376,289Shares held by institutions

$5,670,893,210Value 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) is held by 285 institutional investors per 13F filings through December 2025.

Collectively, these holders controlled 73.3% of Allegro Microsystems's outstanding shares in December 2025, down from 78.2% in September 2025.
Their total shares held in ALGM decreased -3.65% from the prior quarter, while the number of investors in Allegro Microsystems increased 12.2% year over year.
Of these 285 funds, 131 grew their exposure to Allegro Microsystems, 117 cut back, and 37 maintained positions.
Altogether, these fund groups held 136.5Mn shares in ALGM by December 2025, down by 5.17Mn shares quarter on quarter, and down 11.73Mn shares year over year.
Investors Research Corp holds the largest position in ALGM at 93 shares as of December 31, 2025, or 0.0% of shares outstanding.
The biggest buyers of Allegro Microsystems for the quarter ending December 2025 included Investors Research Corp (93).
Business Quant data shows the 1 biggest positions in Allegro Microsystems as of December 2025 are held by Investors Research Corp (93).

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