ALRM Alarm.com Holdings, Inc.
Alarm.com Holdings, Inc. (ALRM) Institutional Ownership
What the institutions did with ALRM last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeLargest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 9.5M | 19.6% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 4.0M | 8.3% |
| DISCIPLINED GROWTH INVESTORS INC /MN | 3.6M | 7.4% |
| BANK OF MONTREAL /CAN/ | 3.5M | 7.1% |
| STATE STREET CORP | 2.2M | 4.5% |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.1M | 4.4% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.3M | 2.8% |
| DIMENSIONAL FUND ADVISORS LP | 1.3M | 2.6% |
| MORGAN STANLEY | 1.2M | 2.4% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.0M | 2.1% |
| GENEVA CAPITAL MANAGEMENT LLC | 828.4K | 1.7% |
| FMR LLC | 775.4K | 1.6% |
| TWO SIGMA INVESTMENTS, LP | 676.6K | 1.4% |
| NORTHERN TRUST CORP | 662.8K | 1.4% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 630.2K | 1.3% |
| GOLDMAN SACHS GROUP INC | 599.2K | 1.2% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 577.2K | 1.2% |
| AMERICAN CENTURY COMPANIES INC | 575.4K | 1.2% |
| ACADIAN ASSET MANAGEMENT LLC | 538.6K | 1.1% |
| Select Equity Group, L.P. | 462.0K | 1.0% |
| Public Sector Pension Investment Board | 449.0K | 0.9% |
| BANK OF AMERICA CORP /DE/ | 435.6K | 0.9% |
| JPMORGAN CHASE & CO | 395.1K | 0.8% |
| RIVERBRIDGE PARTNERS LLC | 394.9K | 0.8% |
| DEUTSCHE BANK AG\ | 369.2K | 0.8% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| BANK OF MONTREAL /CAN/ | Increased | 2.7M | 3.5M | +797.5K |
| ALGERT GLOBAL LLC | Reduced | 525.8K | 120.8K | -405.0K |
| BlackRock, Inc. | Increased | 9.1M | 9.5M | +355.3K |
| JPMORGAN CHASE & CO | Increased | 57.0K | 395.1K | +338.0K |
| SG Americas Securities, LLC | Reduced | 483.5K | 159.9K | -323.6K |
| DISCIPLINED GROWTH INVESTORS INC /MN | Increased | 3.3M | 3.6M | +316.6K |
| AMERICAN CENTURY COMPANIES INC | Increased | 288.4K | 575.4K | +287.0K |
| GENEVA CAPITAL MANAGEMENT LLC | Reduced | 1.1M | 828.4K | -241.7K |
| BROWN CAPITAL MANAGEMENT LLC | Reduced | 359.2K | 120.6K | -238.6K |
| TUDOR INVESTMENT CORP ET AL | Sold Out | 238.2K | 0 | -238.2K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Increased | 779.2K | 1.0M | +231.6K |
| RIVERBRIDGE PARTNERS LLC | Reduced | 592.9K | 394.9K | -198.0K |
| FMR LLC | Reduced | 969.1K | 775.4K | -193.7K |
| Handelsbanken Fonder AB | Reduced | 190.8K | 16.3K | -174.5K |
| Public Sector Pension Investment Board | Increased | 281.6K | 449.0K | +167.5K |
| Qube Research & Technologies Ltd | Reduced | 349.2K | 191.2K | -158.0K |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 380.9K | 538.6K | +157.7K |
| STATE STREET CORP | Increased | 2.0M | 2.2M | +152.0K |
| Nuveen, LLC | Reduced | 351.0K | 206.0K | -145.0K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 1.1M | 1.3M | +141.3K |
| JANE STREET GROUP, LLC | Sold Out | 133.2K | 0 | -133.2K |
| Summit Creek Advisors LLC | Reduced | 191.4K | 59.1K | -132.3K |
| DF DENT & CO INC | Reduced | 300.0K | 187.4K | -112.6K |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | 457.6K | 352.3K | -105.4K |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | Increased | 57.4K | 162.2K | +104.8K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.