Alarm.com Holdings
ALRM · NASDAQ
$58.68+$1.22 (+2.12%)TodayMarket closed ·
Prev close $57.46
Who owns ALRM
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 56.9% of ALRM’s shares.
- BlackRock Institutional Trust Company, N.A.16.5%
- Vanguard Portfolio Management, LLC8.2%
- Disciplined Growth Investors, Inc.7.2%
- Burgundy Asset Management Ltd.6.3%
- Next 6 largest institutions18.7%
- All other shareholders43.1%
| Holder | Shares | % of shares |
|---|---|---|
| BlackRock Institutional Trust Company, N.A. | 8.15M | 16.49% |
| Vanguard Portfolio Management, LLC | 4.04M | 8.16% |
| Disciplined Growth Investors, Inc. | 3.59M | 7.25% |
| Burgundy Asset Management Ltd. | 3.13M | 6.33% |
| State Street Investment Management (US) | 2.19M | 4.42% |
| Vanguard Capital Management, LLC | 2.14M | 4.33% |
| Geode Capital Management, L.L.C. | 1.34M | 2.71% |
| Backbone Partners, L.L.C. | 1.32M | 2.66% |
| Dimensional Fund Advisors, L.P. | 1.26M | 2.54% |
| Arrowstreet Capital, Limited Partnership | 1.01M | 2.04% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| iShares Core S&P Small-Cap ETF | 3.01M | 6.08% |
| Vanguard Total Stock Market Index Fund | 1.50M | 3.03% |
| iShares Russell 2000 ETF | 1.23M | 2.49% |
| Vanguard Information Technology Index Fund | 1.19M | 2.41% |
| Vanguard Small-Cap Index Fund | 1.08M | 2.19% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $4.61M (12 trades) of ALRM on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Trundle Stephen | Gift | 2.00K | — |
| Trundle Stephen | Option exercise | 50.00K | — |
| Trundle Stephen | Sale | 50.00K | $2.88M |
| Trundle Stephen | Option exercise | 50.00K | $1.61M |
| Bradley Kevin Christopher | Sale | 5.40K | $297.38K |
| Bradley Kevin Christopher | Sale | 724 | $35.09K |
| Ramos Daniel | Sale | 2.00K | $93.00K |
| Ramos Daniel | Sale | 8.00K | $369.84K |
| Bradley Kevin Christopher | Sale | 2.20K | $101.53K |
| Whall Timothy J. | Award | 3.22K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 3.05M
- Days to cover
- 5.91
- % of shares outstanding
- 6.16%
- Average daily volume
- 516.08K
- Change since last report
- +3.1%
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