Security key
01749D105
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
- 147,020,352
- Total 13F value
- $10,189,070,650
- Share change
- +10,428,183
- Put/Call ratio
- 37%
- SEC-reported price per share
- $69.62
- Number of holders
- 375
- Value change
- +$780,428,866
- Number of buys
- 212
- Number of sells
- 150
- Shares outstanding
- 187,039,843
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q2 2026
Institutions
375
Top holders
10
ALGM full security history
Ownership snapshot
Full 13F holder table
ALLEGRO MICROSYSTEMS, INC. SEC filings
ALLEGRO MICROSYSTEMS, INC. company facts
Broader feeds
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
Invesco Ltd.
Disclosed value leader
Sanken Electric Co., Ltd.
Comparable rows
4/15
Latest evidence
30 Jun 2026
13D/G
13F
3/4/5
Lead comparable stake: 7.3%
11 rows are not safely comparable across share classes.
13D/G row: Invesco Ltd.
Showing 1-6 of 15 holder rows.
Quick read
Invesco Ltd. leads the comparable SEC ownership view at 7.3%.
4 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 Invesco Ltd.'s linked filing trail.
Comparable ownership
Top 4
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 |
|---|---|---|---|---|---|
| Invesco Ltd. |
13D/G
13F
Company
|
7.3%
Reported 13D/G
· 30 Jun 2026
|
$773,649,908
13,678,393 shares
|
$0 | 30 Jun 2026 |
| Capital Research Global Investors |
13D/G
13F
Company
|
7.1%
Reported 13D/G
· 31 Dec 2025
|
$410,252,327
13,111,292 shares
|
-$87,395,004 | 31 Dec 2025 |
| BlackRock, Inc. |
13D/G
13F
Company
|
6.9%
Reported 13D/G
· 30 Jun 2026
|
$892,113,465
12,814,040 shares
|
$0 | 30 Jun 2026 |
| JPMORGAN CHASE & CO |
13D/G
13F
Company
|
6.8%
Reported 13D/G
· 30 Jun 2026
|
$886,228,456
12,729,473 shares
|
+$259,984,105 | 30 Jun 2026 |
| Sanken Electric Co., Ltd. |
3/4/5
10%+ Owner
|
—
denominator unverified
|
$1,383,411,231
59,732,782 shares
|
— | 07 Aug 2024 |
| OEP SKNA, L.P. |
3/4/5
10%+ Owner
|
—
denominator unverified
|
$494,884,886
17,649,247 shares
|
— | 02 Feb 2023 |
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
375
Shares
147,020,352
Rows available
375
| 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
320
Q2 2026 holders
375
Holder diff
55
| Investor | Q1 2026 Shares | Q2 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q2 2026 value | Value change | Value Chg % |
|---|