Allegro Microsystems ALGM Institutional Ownership

NASDAQ ALGM

$39.53 +3.15 (+8.66%)

At close: Oct 2, 2026 · 4:00 PM EDT

Institutions by Trading Activity

374 Institutions

Increased 219 58.6%

Unchanged 50 13.4%

Reduced 105 28.1%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

80.51%

▲+5.76 pp QoQ

Shares Held by Institutions

149.60Mn

of 185.81Mn outstanding

▲+9.68% QoQ

Shares Outstanding

185.81Mn

36.20Mn held outside 13F filers

Institutional Investors

374

filed 13F for Jun 2026

▲+55 vs prior quarter

Net Shares Added (QoQ)

+13.21Mn

accumulated since last quarter

Value of Holdings

$5.91Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Allegro Microsystems, Inc. (NASDAQ:ALGM) is held by 1 institutional investors per 13F filings through September 2026.

These investors collectively held 0.0% of Allegro Microsystems's outstanding shares in September 2026, down from 80.5% in June 2026.
They increased total shares held in Allegro Microsystems by 0.0% from last quarter, and the number of investors in ALGM decreased 99.66% annually.
Activity in ALGM broke down as 1 buyers, 0 sellers, and 0 unchanged among 1 total holders.
The aggregate institutional position in Allegro Microsystems amounted to 334 shares as of September 2026, up by 334 shares quarter on quarter, and down 135.86Mn shares year over year.
As of September 30, 2026, the biggest holder of Allegro Microsystems is BURKETT FINANCIAL SERVICES, LLC at 334 shares, representing 0.0% of shares outstanding.
Top purchasers of ALGM stock for the quarter ending September 2026 included BURKETT FINANCIAL SERVICES, LLC (334).
Per Business Quant, the top 1 investors in ALGM for the quarter ending September 2026 include BURKETT FINANCIAL SERVICES, LLC (334).

Form 13F Holdings

374 Institutional Holders

Report period 30 Jun, 2026

Total shares held 149.60Mn

Of outstanding 80.51%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	FMR LLC	0000315066	25,581,021	13.77%	▼1,840,185	-6.71%	$1.78Bn
2	BlackRock, Inc.	0002012383	13,889,324	7.48%	▲1,394,456	+11.16%	$966.97Mn
3	Invesco Ltd.	0000914208	13,678,393	7.36%	▲4,926,912	+56.30%	$952.29Mn
4	Jpmorgan Chase & Co	0000019617	12,723,790	6.85%	▲4,071,722	+47.06%	$844.87Mn
5	Capital Research Global Investors	0001422848	12,006,396	6.46%	▼429,162	-3.45%	$835.89Mn
6	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	7,668,472	4.13%	▼251,570	-3.18%	$533.88Mn
7	State Street Corp	0000093751	5,676,421	3.06%	▲448,317	+8.58%	$395.19Mn
8	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	5,508,806	2.96%	▲44,088	+0.81%	$383.52Mn
9	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	3,710,288	2.00%	▲3,596,489	+3,160.39%	$258.31K
10	Clearbridge Investments, LLC	0001348883	2,946,239	1.59%	▲82,529	+2.88%	$205.12Mn
11	GEODE CAPITAL MANAGEMENT, LLC	0001214717	2,644,929	1.42%	▲188,109	+7.66%	$184.18Mn
12	DIMENSIONAL FUND ADVISORS LP	0000354204	2,123,963	1.14%	▼46,524	-2.14%	$147.85Mn
13	Morgan Stanley	0000895421	1,809,335	0.97%	▼465,950	-20.48%	$125.97Mn
14	LOOMIS SAYLES & CO L P	0000312348	1,619,931	0.87%	▼54,177	-3.24%	$112.78Mn
15	Goldman Sachs Group Inc	0000886982	1,575,057	0.85%	▲137,842	+9.59%	$109.66Mn
16	Principal Financial Group Inc	0001126328	1,489,791	0.80%	▼300,675	-16.79%	$103.72Mn
17	MASSACHUSETTS FINANCIAL SERVICES CO /MA/	0000912938	1,443,495	0.78%	▲1,374,198	+1,983.06%	$100.49Mn
18	Sixth Street Partners Management Company, L.P.	0001812095	1,360,525	0.73%	▲1,360,525	0.00%	$94.72Mn
18	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	1,360,525	0.73%	▼30,081	-2.16%	$94.72Mn
19	NORGES BANK	0001374170	1,294,958	0.70%	▲1,294,958	0.00%	$90.15Mn

Showing 1 to 20 of 374 holders