Security key
020772109
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 2,664,023
- Total 13F value
- $17,932,686
- Share change
- -1,043,440
- Put/Call ratio
- 102%
- SEC-reported price per share
- $6.73
- Number of holders
- 44
- Value change
- -$9,193,473
- Number of buys
- 20
- Number of sells
- 37
- Shares outstanding
- 10,202,127
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
Q3 2021
Institutions
44
Top holders
10
APT full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q4 2021
Previous quarter: Q2 2021
ALPHA PRO TECH LTD SEC filings
ALPHA PRO TECH LTD company facts
Broader feeds
Reporting periods
Holder history for CUSIP 020772109
Recent filing periods:
Ownership snapshot
Top reported holders of APT - ALPHA PRO TECH LTD - 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
Donna Millar
Disclosed value leader
Donna Millar
Comparable rows
15/15
Latest evidence
30 Jun 2021
13D/G
13F
Lead comparable stake: 12%
13D/G row: Donna Millar
Showing 1-6 of 15 holder rows.
Quick read
Donna Millar leads the comparable SEC ownership view at 12%.
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 Donna Millar's linked filing trail.
Comparable ownership
Top 5
Donna Millar
12%
VANGUARD GROUP INC
5.9%
GREAT LAKES ADVISORS, LLC
5.8%
RENAISSANCE TECHNOLOGIES LLC
4.9%
BlackRock Finance, Inc.
2.1%
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 |
|---|---|---|---|---|---|
| Donna Millar |
13D/G
Millar Donna
|
12%
|
$5,356,795
1,284,603 shares
|
$0 | 13 Dec 2018 |
| VANGUARD GROUP INC |
13F
Company
|
5.9%
|
$5,132,000
598,786 shares
|
— | 30 Jun 2021 |
| GREAT LAKES ADVISORS, LLC |
13F
Company
|
5.8%
|
$5,113,000
596,625 shares
|
— | 30 Jun 2021 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
4.9%
|
$4,243,000
495,063 shares
|
— | 30 Jun 2021 |
| BlackRock Finance, Inc. |
13F
Company
|
2.1%
|
$1,840,000
214,668 shares
|
— | 30 Jun 2021 |
| MILLENNIUM MANAGEMENT LLC |
13F
Company
|
1.6%
|
$1,425,000
166,272 shares
|
— | 30 Jun 2021 |
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 Q3 2021
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
44
Shares
2,664,023
Rows available
44
| 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 Q3 2021 vs Q2 2021 Across Filers
Q2 2021 holders
53
Q3 2021 holders
44
Holder diff
-9
| Investor | Q2 2021 Shares | Q3 2021 Shares | Share Diff | Share Chg % | Q2 2021 value | Q3 2021 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend