Alarm.com Holdings, Inc.
US ˙ NasdaqGS ˙ US0116421050

SecurityALRM / Alarm.com Holdings, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership1,117,359 shares
Latest Disclosed Value $ 48,256,510
Dimensional Fund Advisors Lp reports 1.05% increase in ownership of ALRM / Alarm.com Holdings, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 1,117,359 shares of Alarm.com Holdings, Inc. (US:ALRM) valued at $48,258,735 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 1,105,735 shares of Alarm.com Holdings, Inc.. This represents a change in shares of 1.05% during the quarter. The current value of the position is $50,269,981 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F ALARM COM HLDGS COM 011642105 1,117,359 11,624 1.05 48,257 -14.47 0.0022
2026-02-12 2025-12-31 13F ALARM COM HLDGS COM 011642105 1,105,735 25,659 2.38 56,417 -1.59 0.0118
2025-11-12 2025-09-30 13F ALARM COM HLDGS COM 011642105 1,080,076 43,683 4.21 57,328 -2.22 0.0123
2025-08-12 2025-06-30 13F ALARM COM HLDGS COM 011642105 1,036,393 -14,640 -1.39 58,629 0.24 0.0136
2025-05-13 2025-03-31 13F ALARM COM HLDGS COM 011642105 1,051,033 -36,204 -3.33 58,489 -11.52 0.0145
2025-02-13 2024-12-31 13F ALARM COM HLDGS COM 011642105 1,087,237 -30,994 -2.77 66,105 8.13 0.0159
2024-11-07 2024-09-30 13F ALARM COM HLDGS COM 011642105 1,118,231 -44,646 -3.84 61,135 -17.26 0.0148
2024-08-09 2024-06-30 13F ALARM COM HLDGS COM 011642105 1,162,877 42,281 3.77 73,889 -9.02 0.0193
2024-05-10 2024-03-31 13F ALARM COM HLDGS COM 011642105 1,120,596 41,709 3.87 81,210 16.49 0.0220
2024-02-07 2023-12-31 13F ALARM COM HLDGS COM 011642105 1,078,887 16,704 1.57 69,715 7.35 0.0204
2023-11-09 2023-09-30 13F ALARM COM HLDGS COM 011642105 1,062,183 77,597 7.88 64,942 27.63 0.0213
2023-08-09 2023-06-30 13F ALARM COM HLDGS COM 011642105 984,586 119,755 13.85 50,882 17.02 0.0162
2023-05-12 2023-03-31 13F ALARM COM HLDGS COM 011642105 864,831 -8,276 -0.95 43,482 101,018.60 0.0146
2023-02-09 2022-12-31 13F ALARM COM HLDGS COM 011642105 873,107 27,277 3.22 43 -99.92 0.0128
2022-11-10 2022-09-30 13F ALARM COM HLDGS COM 011642105 845,830 7,208 0.86 54,862 5.76 0.0211
2022-08-12 2022-06-30 13F ALARM COM HLDGS COM 011642105 838,622 38,358 4.79 51,876 -2.46 0.0186
2022-05-13 2022-03-31 13F ALARM COM HLDGS COM 011642105 800,264 -3,565 -0.44 53,187 -21.98 0.0164
2022-02-09 2021-12-31 13F ALARM COM HLDGS COM 011642105 803,829 9,684 1.22 68,172 9.78 0.0206
2021-11-12 2021-09-30 13F ALARM COM HLDGS COM 011642105 794,145 5,289 0.67 62,097 -7.07 0.0200
2021-08-12 2021-06-30 13F ALARM COM HLDGS COM 011642105 788,856 -14,076 -1.75 66,821 -3.65 0.0212
2021-05-14 2021-03-31 13F ALARM COM HLDGS COM 011642105 802,932 -4,615 -0.57 69,354 -16.98 0.0229
2021-03-08 2020-12-31 13F/A-2 ALARM COM HLDGS COM 011642105 807,547 -58,418 -6.75 83,541 74.61 0.0302
2021-02-11 2020-12-31 13F ALARM COM HLDGS COM 011642105 807,547 -58,418 83,541 30,170.5688
2020-11-12 2020-09-30 13F ALARM COM HLDGS COM 011642105 865,965 29,295 3.50 47,845 -11.76 0.0203
2020-08-13 2020-06-30 13F ALARM COM HLDGS COM 011642105 836,670 20,725 2.54 54,222 70.79 0.0238
2020-05-14 2020-03-31 13F ALARM COM HLDGS COM 011642105 815,945 13,921 1.74 31,748 -7.88 0.0165
2020-02-14 2019-12-31 13F ALARM COM HLDGS COM 011642105 802,024 29,019 3.75 34,463 -4.41 0.0126
2019-11-12 2019-09-30 13F ALARM COM HLDGS COM 011642105 773,005 64,997 9.18 36,053 -4.82 0.0140
2019-08-13 2019-06-30 13F ALARM COM HLDGS COM 011642105 708,008 20,513 2.98 37,878 -15.10 0.0147
2019-08-12 2019-03-31 13F/A-2 ALARM COM HLDGS COM 011642105 687,495 51,064 8.02 44,617 35.15 0.0178
2019-05-10 2019-03-31 13F ALARM COM HLDGS COM 011642105 687,495 51,064 44,617
2019-02-26 2018-12-31 13F/A-1 ALARM COM HLDGS COM 011642105 636,431 165,244 35.07 33,012 22.06 0.0150
2019-02-13 2018-12-31 13F ALARM COM HLDGS COM 011642105 636,431 165,244 33,012
2018-11-13 2018-09-30 13F ALARM COM HLDGS COM 011642105 471,187 161,549 52.17 27,046 116.32 0.0103
2018-08-10 2018-06-30 13F ALARM COM HLDGS COM 011642105 309,638 309,638 12,503 0.0050
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.