Security key
011642105
Alarm.com Holdings, Inc. - Common Stock (ALRM)
CUSIP: 011642105
Q1 2021 13F Holders as of 31 Mar 2021
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 46,248,763
- Total 13F value
- $3,995,965,020
- Share change
- -551,012
- Put/Call ratio
- 109%
- SEC-reported price per share
- $86.38
- Number of holders
- 265
- Value change
- -$49,419,930
- Number of buys
- 117
- Number of sells
- 139
- Shares outstanding
- 49,530,091
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 2021
Institutions
265
Top holders
10
ALRM full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2021
Previous quarter: Q4 2020
Alarm.com Holdings, Inc. SEC filings
Alarm.com Holdings, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 011642105
Recent filing periods:
Ownership snapshot
Top reported holders of ALRM - Alarm.com Holdings, 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
BlackRock Finance, Inc.
Disclosed value leader
BlackRock Finance, Inc.
Comparable rows
15/15
Latest evidence
31 Dec 2020
13F
Lead comparable stake: 15%
Showing 1-6 of 15 holder rows.
Quick read
BlackRock Finance, Inc. leads the comparable SEC ownership view at 15%.
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 BlackRock Finance, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock Finance, Inc.
15%
BROWN CAPITAL MANAGEMENT LLC
11%
VANGUARD GROUP INC
9.7%
WILLIAM BLAIR INVESTMENT MANAGEME...
5.8%
AKRE CAPITAL MANAGEMENT LLC
4%
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 |
|---|---|---|---|---|---|
| BlackRock Finance, Inc. |
13F
Company
|
15%
|
$762,636,000
7,372,030 shares
|
— | 31 Dec 2020 |
| BROWN CAPITAL MANAGEMENT LLC |
13F
Company
|
11%
|
$572,709,000
5,536,093 shares
|
— | 31 Dec 2020 |
| VANGUARD GROUP INC |
13F
Company
|
9.7%
|
$496,006,000
4,794,648 shares
|
— | 31 Dec 2020 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC |
13F
Company
|
5.8%
|
$296,760,000
2,868,630 shares
|
— | 31 Dec 2020 |
| AKRE CAPITAL MANAGEMENT LLC |
13F
Company
|
4%
|
$205,023,000
1,981,858 shares
|
— | 31 Dec 2020 |
| RIVERBRIDGE PARTNERS LLC |
13F
Company
|
3.7%
|
$189,617,000
1,832,931 shares
|
— | 31 Dec 2020 |
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 2021
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
265
Shares
46,248,763
Rows available
265
| 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 2021 vs Q4 2020 Across Filers
Q4 2020 holders
270
Q1 2021 holders
265
Holder diff
-5
| Investor | Q4 2020 Shares | Q1 2021 Shares | Share Diff | Share Chg % | Q4 2020 value | Q1 2021 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend