Security key
01749D105
ALLEGRO MICROSYSTEMS, INC. - COMMON STOCK (ALGM)
CUSIP: 01749D105
Q1 2023 13F Holders as of 31 Mar 2023
- Security type / class
- Equity / COMMON STOCK
- Total 13F shares
- 97,246,444
- Total 13F value
- $4,665,848,181
- Share change
- +1,117,981
- Put/Call ratio
- 27%
- SEC-reported price per share
- $47.99
- Number of holders
- 306
- Value change
- +$97,194,449
- Number of buys
- 197
- Number of sells
- 103
- 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
Q1 2023
Institutions
306
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
OEP SKNA, L.P.
Disclosed value leader
OEP CAPITAL ADVISORS, L.P.
Comparable rows
0/15
Latest evidence
02 Feb 2023
3/4/5
13F
Highest disclosed value: $679,329,995
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
OEP CAPITAL ADVISORS, L.P. has the largest disclosed position value at $679.33M.
0 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 OEP CAPITAL ADVISORS, L.P.'s linked filing trail.
Disclosed position value
Top 5
OEP SKNA, L.P.
$494.88M
OEP CAPITAL ADVISORS, L.P.
$679.33M
VANGUARD GROUP INC
$196.58M
BlackRock Finance, Inc.
$178.52M
FMR LLC
$168.77M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| OEP SKNA, L.P. |
3/4/5
10%+ Owner
|
—
denominator unverified
|
$494,884,886
17,649,247 shares
|
— | 02 Feb 2023 |
| OEP CAPITAL ADVISORS, L.P. |
13F
Company
|
—
denominator unverified
|
$679,329,995
22,629,247 shares
|
— | 31 Dec 2022 |
| VANGUARD GROUP INC |
13F
Company
|
—
denominator unverified
|
$196,580,596
6,548,321 shares
|
— | 31 Dec 2022 |
| BlackRock Finance, Inc. |
13F
Company
|
—
denominator unverified
|
$178,524,917
5,946,866 shares
|
— | 31 Dec 2022 |
| FMR LLC |
13F
Company
|
—
denominator unverified
|
$168,765,326
5,621,763 shares
|
— | 31 Dec 2022 |
| Clearbridge Investments, LLC |
13F
Company
|
—
denominator unverified
|
$118,650,147
3,952,370 shares
|
— | 31 Dec 2022 |
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 Q1 2023
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
306
Shares
97,246,444
Rows available
306
| 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 Q1 2023 vs Q1 2023 Across Filers
Q1 2023 holders
306
Q1 2023 holders
306
Holder diff
0
| Investor | Q1 2023 Shares | Q1 2023 Shares | Share Diff | Share Chg % | Q1 2023 value | Q1 2023 value | Value change | Value Chg % |
|---|