Allegro MicroSystems (ALGM) Institutional Ownership

$53.06 +2.73 (+5.43%)

Closing price 03:58 PM Eastern

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$52.14 -0.92 (-1.74%)

As of 04:06 PM Eastern

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Current Institutional Ownership Percentage: 56.45%
Number of Institutional Buyers (last 12 months): 171
Total Institutional Inflows (last 12 months): $770.09M

Number of Institutional Sellers (last 12 months): 125
Total Institutional Outflows (last 12 months): $562.68M

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ALGM Institutional Buying and Selling by Quarter

Allegro MicroSystems Major Shareholders & Ownership History

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Reporting Date	Major Shareholder Name	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
6/3/2026	Parallel Advisors LLC	1,008	$32K	0.0%	+42.8%	0.001%
5/22/2026	Segall Bryant & Hamill LLC	1,044,984	$32.95M	0.4%	-16.3%	0.564%
5/19/2026	Bank of America Corp DE	855,453	$26.97M	0.0%	+48.3%	0.462%
5/18/2026	California State Teachers Retirement System	149,826	$4.72M	0.0%	+21.8%	0.081%
5/18/2026	Royal Bank of Canada	30,337	$957K	0.0%	-19.2%	0.016%
5/16/2026	The Manufacturers Life Insurance Company	81,072	$2.56M	0.0%	-1.4%	0.044%
5/16/2026	Maverick Capital Ltd.	42,224	$1.33M	0.0%	N/A	0.023%
5/16/2026	Quantinno Capital Management LP	133,902	$4.22M	0.0%	+104.9%	0.072%
5/16/2026	Castleark Management LLC	147,420	$4.65M	0.2%	N/A	0.080%
5/15/2026	Granahan Investment Management LLC	215,001	$6.78M	0.3%	+139.3%	0.116%
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5/15/2026	Entropy Technologies LP	67,719	$2.14M	0.1%	+88.7%	0.037%
5/14/2026	Renaissance Technologies LLC	123,900	$3.91M	0.0%	-71.6%	0.067%
5/14/2026	Public Employees Retirement System of Ohio	36,618	$1.16M	0.0%	-3.4%	0.020%
5/14/2026	Sei Investments Co.	218,976	$6.90M	0.0%	+126.0%	0.118%
5/14/2026	State of Wyoming	13,834	$436K	0.1%	+29.7%	0.007%
5/13/2026	Cetera Investment Advisers	11,656	$368K	0.0%	-2.1%	0.006%
5/13/2026	First Trust Advisors LP	414,897	$13.08M	0.0%	-7.6%	0.224%
5/8/2026	PNC Financial Services Group Inc.	13,949	$440K	0.0%	+18.0%	0.008%
5/7/2026	Dimensional Fund Advisors LP	2,170,487	$68.40M	0.0%	+1.4%	1.171%
5/7/2026	Parallel Advisors LLC	1,008	$32K	0.0%	+42.8%	0.001%
5/7/2026	KBC Group NV	4,581	$144K	0.0%	+24.0%	0.002%
5/7/2026	SEB Asset Management AB	7,798	$246K	0.0%	N/A	0.004%
5/7/2026	Swiss National Bank	256,400	$8.08M	0.0%	+0.4%	0.138%
5/7/2026	Roubaix Capital LLC	169,993	$5.36M	2.5%	N/A	0.092%
5/6/2026	Assetmark Inc.	6,338	$200K	0.0%	+12.5%	0.003%
5/6/2026	Lightrock Netherlands B.V.	507,990	$16.02M	1.6%	+43.3%	0.274%
5/6/2026	Allspring Global Investments Holdings LLC	307,624	$10.24M	0.0%	-13.6%	0.166%
5/5/2026	Bank of New York Mellon Corp	743,292	$23.44M	0.0%	-1.0%	0.401%
5/5/2026	Maryland State Retirement & Pension System	6,797	$214K	0.0%	N/A	0.004%
5/4/2026	State of Michigan Retirement System	29,900	$943K	0.0%	+2.0%	0.016%
5/4/2026	Principal Financial Group Inc.	1,790,466	$56.45M	0.0%	+2.8%	0.966%
5/4/2026	Teachers Retirement System of The State of Kentucky	40,633	$1.28M	0.0%	+2.5%	0.022%
5/1/2026	Fifth Third Bancorp	29,063	$916K	0.0%	+2,377.7%	0.016%
5/1/2026	Candriam S.C.A.	86,073	$2.71M	0.0%	-2.1%	0.046%
4/30/2026	Hsbc Holdings PLC	18,355	$575K	0.0%	-53.9%	0.010%
4/30/2026	Oregon Public Employees Retirement Fund	25,437	$802K	0.0%	+2.8%	0.014%
4/28/2026	Praxis Investment Management Inc.	6,590	$208K	0.0%	N/A	0.004%
4/27/2026	New York State Teachers Retirement System	28,178	$888K	0.0%	-12.5%	0.015%
4/27/2026	Y Intercept Hong Kong Ltd	45,132	$1.42M	0.0%	N/A	0.024%
4/27/2026	Elevation Point Wealth Partners LLC	7,690	$242K	0.0%	N/A	0.004%
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4/25/2026	Keybank National Association OH	12,380	$390K	0.0%	-8.7%	0.007%
4/24/2026	Peregrine Capital Management LLC	259,764	$8.19M	0.3%	-4.1%	0.140%
4/22/2026	Pictet Asset Management Holding SA	22,377	$706K	0.0%	+7.6%	0.012%
4/22/2026	Sterling Capital Management LLC	4,129	$130K	0.0%	-43.3%	0.002%
4/21/2026	Louisiana State Employees Retirement System	36,000	$1.14M	0.0%	N/A	0.019%
4/16/2026	SG Americas Securities LLC	5,245	$165K	0.0%	-64.5%	0.003%
3/20/2026	Hsbc Holdings PLC	39,811	$1.05M	0.0%	-54.2%	0.021%
3/17/2026	Rockefeller Capital Management L.P.	16,876	$445K	0.0%	+470.5%	0.009%
3/9/2026	Corient Private Wealth LLC	14,457	$408K	0.0%	+44.1%	0.008%
2/24/2026	Pacer Advisors Inc.	32,313	$852K	0.0%	+98.1%	0.017%
2/19/2026	T. Rowe Price Investment Management Inc.	349,349	$9.22M	0.0%	-67.8%	0.189%
2/19/2026	Invesco Ltd.	7,651,051	$201.84M	0.0%	+44.0%	4.129%
2/19/2026	Corient Private Wealth LLC	15,345	$408K	0.0%	+52.9%	0.008%
2/18/2026	Mercer Global Advisors Inc. ADV	10,502	$277K	0.0%	+23.2%	0.006%
2/18/2026	State of Tennessee Department of Treasury	79,237	$2.09M	0.0%	-8.5%	0.043%
2/18/2026	Mackenzie Financial Corp	8,809	$236K	0.0%	-9.0%	0.005%
2/18/2026	XTX Topco Ltd	25,638	$676K	0.0%	-49.1%	0.014%
2/18/2026	Wellington Management Group LLP	1,106,337	$29.19M	0.0%	-4.7%	0.597%
2/18/2026	Tudor Investment Corp ET AL	25,665	$677K	0.0%	+201.9%	0.014%
2/18/2026	Man Group plc	387,105	$10.21M	0.0%	+79.8%	0.209%
2/18/2026	Gotham Asset Management LLC	73,093	$1.93M	0.0%	-41.3%	0.039%
2/18/2026	Engineers Gate Manager LP	419,600	$11.07M	0.1%	+506.7%	0.226%
2/18/2026	Balyasny Asset Management L.P.	810,460	$21.38M	0.0%	+62.6%	0.437%
2/17/2026	Guggenheim Capital LLC	45,571	$1.20M	0.0%	+125.2%	0.025%
2/17/2026	Schonfeld Strategic Advisors LLC	754,824	$19.91M	0.1%	+838.1%	0.407%
2/17/2026	AQR Capital Management LLC	327,973	$8.65M	0.0%	+31.0%	0.177%
2/17/2026	Cetera Investment Advisers	11,901	$314K	0.0%	-20.5%	0.006%
2/17/2026	Lazard Asset Management LLC	23,712	$626K	0.0%	-25.1%	0.013%
2/17/2026	ArrowMark Colorado Holdings LLC	139,761	$3.69M	0.1%	-6.6%	0.075%
2/17/2026	Trexquant Investment LP	79,486	$2.10M	0.0%	-58.0%	0.043%
2/17/2026	Amundi	23,256	$613K	0.0%	+131.6%	0.013%
2/17/2026	Price T Rowe Associates Inc. MD	101,366	$2.68M	0.0%	+4.9%	0.055%
2/17/2026	T. Rowe Price Investment Management Inc.	131,141	$3.46M	0.0%	-87.9%	0.071%
2/17/2026	Adage Capital Partners GP L.L.C.	2,803,944	$73.97M	0.1%	+77.8%	1.513%
2/17/2026	Public Employees Retirement System of Ohio	37,893	$1M	0.0%	-3.4%	0.020%
2/17/2026	California State Teachers Retirement System	122,998	$3.25M	0.0%	+3.6%	0.066%
2/17/2026	Russell Investments Group Ltd.	21,249	$561K	0.0%	+46.6%	0.011%
2/17/2026	Granahan Investment Management LLC	89,857	$2.37M	0.1%	N/A	0.048%
2/17/2026	State of Wisconsin Investment Board	97,609	$2.58M	0.0%	-12.7%	0.053%
2/17/2026	Royal Bank of Canada	37,534	$990K	0.0%	-94.2%	0.020%
2/17/2026	Graham Capital Management L.P.	22,533	$594K	0.0%	+37.9%	0.012%
2/17/2026	Talos Eurisko Asset Management LP	560,200	$14.78M	2.6%	N/A	0.302%
2/16/2026	Vanguard Personalized Indexing Management LLC	14,268	$376K	0.0%	+3.0%	0.008%
2/16/2026	PEAK6 LLC	27,542	$727K	0.0%	-60.5%	0.015%
2/16/2026	S Squared Technology LLC	457,451	$12.07M	4.7%	+15.1%	0.247%
2/16/2026	MML Investors Services LLC	30,892	$815K	0.0%	N/A	0.017%
2/16/2026	Kennedy Capital Management LLC	44,860	$1.18M	0.0%	-20.8%	0.024%
2/16/2026	Entropy Technologies LP	35,895	$947K	0.1%	N/A	0.019%
2/16/2026	Barclays PLC	88,300	$2.33M	0.0%	-41.5%	0.048%
2/16/2026	Analog Century Management LP	1,890,072	$49.86M	2.5%	+60.9%	1.020%
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2/13/2026	Kestra Advisory Services LLC	1,281	$34K	0.0%	N/A	0.001%
2/13/2026	Marshall Wace LLP	714,579	$18.85M	0.0%	+417.5%	0.386%
2/13/2026	The Manufacturers Life Insurance Company	82,250	$2.17M	0.0%	-2.8%	0.044%
2/13/2026	Segall Bryant & Hamill LLC	1,248,310	$32.93M	0.4%	-5.7%	0.674%
2/13/2026	Bridgefront Capital LLC	28,801	$760K	0.2%	N/A	0.016%
2/13/2026	Morgan Stanley	2,233,136	$58.91M	0.0%	+15.2%	1.205%
2/13/2026	First Trust Advisors LP	448,980	$11.84M	0.0%	-18.6%	0.242%
2/13/2026	Integrated Wealth Concepts LLC	17,976	$474K	0.0%	N/A	0.010%
2/13/2026	Alyeska Investment Group L.P.	400,000	$10.55M	0.0%	N/A	0.216%
2/13/2026	Charles Schwab Investment Management Inc.	1,362,418	$35.94M	0.0%	+5.2%	0.735%

ALGM Institutional Ownership - Frequently Asked Questions

During the previous two years, 298 institutional investors and hedge funds held shares of Allegro MicroSystems. The most heavily invested institutionals were FMR LLC ($497.85M), Vanguard Group Inc. ($374.66M), Capital Research Global Investors ($345.88M), Invesco Ltd. ($201.84M), JPMorgan Chase & Co. ($193.83M), State Street Corp ($141.38M), and Frontier Capital Management Co. LLC ($80.89M).Learn more on Allegro MicroSystems' institutional investors.

56.45% of Allegro MicroSystems' stock is owned by institutional investors. Learn more on ALGM's institutional investor holdings.

Of the 270 institutional investors that purchased Allegro MicroSystems' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: FMR LLC ($8.53M), Invesco Ltd. ($6.50M), Wellington Management Group LLP ($4.93M), Norges Bank ($4.10M), Bank of America Corp DE ($3.84M), Alliancebernstein L.P. ($2.57M), and Schonfeld Strategic Advisors LLC ($2.30M).

Institutional investors have bought a total of 26,461,563 shares in the last 24 months. This purchase volume represents approximately $770.09M in transactions.

Of the 125 institutional investors that sold Allegro MicroSystems' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Capital Research Global Investors ($3.71M), Balyasny Asset Management L.P. ($2.10M), T. Rowe Price Investment Management Inc. ($1.69M), JPMorgan Chase & Co. ($1.65M), Wellington Management Group LLP ($1.53M), Invesco Ltd. ($942.15K), and Analog Century Management LP ($757.22K).

Institutional investors have sold a total of 19,151,049 shares in the last 24 months. This volume of shares sold represents approximately $562.68M in transactions.

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This page (NASDAQ:ALGM) was last updated on 6/3/2026 by MarketBeat.com Staff.

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Allegro MicroSystems (ALGM) Institutional Ownership

ALGM Institutional Buying and Selling by Quarter

Allegro MicroSystems Major Shareholders & Ownership History

ALGM Institutional Ownership - Frequently Asked Questions

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Allegro MicroSystems (ALGM) Institutional Ownership

Institutional Ownership Changes (13F Filings) for Allegro MicroSystems (NASDAQ:ALGM)

ALGM Institutional Buying and Selling by Quarter

Allegro MicroSystems Major Shareholders & Ownership History

ALGM Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of ALGM shares?

What percentage of Allegro MicroSystems' stock is owned by institutional investors?

Which institutional investors have been buying Allegro MicroSystems' stock?

How much institutional buying is happening at Allegro MicroSystems?

Which of Allegro MicroSystems' major shareholders have been selling company stock?

How much institutional selling is happening at Allegro MicroSystems?

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