What does CUSIP 01749D105 represent in this 13F holders report?

CUSIP 01749D105 is the security identifier for ALGM - ALLEGRO MICROSYSTEMS, INC. - Common Stock used to aggregate holder disclosures.

How many institutions held ALGM - ALLEGRO MICROSYSTEMS, INC. - Common Stock in Q2 2026?

370 institutional investors reported ALGM - ALLEGRO MICROSYSTEMS, INC. - Common Stock for Q2 2026. Use the holders table for investor-level position and value details.

ALLEGRO MICROSYSTEMS, INC. - Common Stock (ALGM)

CUSIP: 01749D105

Q2 2026 13F Holders as of 30 Jun 2026

Security type / class: Equity / Common Stock
Total 13F shares: 146,854,808
Total 13F value: $10,177,545,475
Share change: +10,428,139
Put/Call ratio: 37%
SEC-reported price per share: $69.62
Number of holders: 370
Value change: +$780,425,841
Number of buys: 210
Number of sells: 148
Shares outstanding: 187,375,247

Security key

01749D105

Report period

Q2 2026

Institutions

370

Top holders

ALGM full security history Ownership snapshot Full 13F holder table ALLEGRO MICROSYSTEMS, INC. SEC filings ALLEGRO MICROSYSTEMS, INC. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Ownership snapshot

Top reported holders of ALGM - ALLEGRO MICROSYSTEMS, INC. - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

FMR LLC

Disclosed value leader

FMR LLC

Comparable rows

15/15

Latest evidence

30 Jun 2026

13D/G 13F 3/4/5 Lead comparable stake: 14% 13D/G row: FMR LLC Showing 1-6 of 15 holder rows.

Quick read

FMR LLC leads the comparable SEC ownership view at 14%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens FMR LLC's linked filing trail.

Comparable ownership Top 5

FMR LLC 14%

Invesco Ltd. 7.3%

Capital Research Global Investors 7.1%

BlackRock, Inc. 6.9%

JPMORGAN CHASE & CO 6.8%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
FMR LLC	13D/G 13F Company 13D/G 13F	14%	$1,446,862,575 25,581,021 shares	-$104,080,807	30 Jun 2026
Invesco Ltd.	13D/G 13F Company 13D/G 13F	7.3%	$773,649,908 13,678,393 shares	$0	30 Jun 2026
Capital Research Global Investors	13D/G 13F Company 13D/G 13F	7.1%	$410,252,327 13,111,292 shares	-$87,395,004	31 Dec 2025
BlackRock, Inc.	13D/G 13F Company 13D/G 13F	6.9%	$892,113,465 12,814,040 shares	$0	30 Jun 2026
JPMORGAN CHASE & CO	13D/G 13F Company 13D/G 13F	6.8%	$886,228,456 12,729,473 shares	+$259,984,105	30 Jun 2026
Michael C. Doogue	3/4/5 President and CEO, Director 3/4/5	0.28%	$16,769,955 531,873 shares	-$1,421,251	16 May 2026

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q2 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

370

146,854,808

Rows available

370

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q2 2026 vs Q1 2026 Across Filers

Q1 2026 holders

318

Q2 2026 holders

370

Holder diff

Investor	Q1 2026 Shares	Q2 2026 Shares	Share Diff	Share Chg %	Q1 2026 value	Q2 2026 value	Value change	Value Chg %