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ALRM · Alarm.com Holdings, Inc.

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$57.51 +0.45 (+0.79%) At close · Aug 21
Market Cap
$2.82B
Shares
49.09M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 311
Total Value: $2,265,845,648
Total Shares: 48,521,640

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 311 13F filers · Δ vs Mar 31, 2026
Top Holder
19.6%
Sep 2023 → Jun 2026 · range 18.4% – 19.8%
+0.6 pts
Top 5
47.1%
Sep 2023 → Jun 2026 · range 44.3% – 51.8%
+2.8 pts
Top 10
61.4%
Sep 2023 → Jun 2026 · range 58.3% – 67.1%
+3.1 pts
HHI
652
Sep 2023 → Jun 2026 · range 602 – 746
Broadly held+51

Quarterly Activity

vs Mar 31, 2026
New
57
Increased
109
Decreased
107
Sold Out
41
Unchanged
38
Holder count: +16
Institutional value: +9.1%
Shares held: +0.9%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 316
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1459200 CUSIP 011642105 13F (30d) 284 filings 280 filers Visit website Investor relations