The 2021 SDM 100 ranks U.S. companies that provide electronic security systems and services to both residential and non-residential customers. This ranking is based on information provided to or, in few cases, estimated by SDM. Ranked companies were asked to submit either an audited or reviewed financial statement, or a copy of their income tax return showing total gross receipts for the stated period. The vast majority of the firms ranked are privately held.
The main table (select below), ranks 100 companies by their recurring monthly revenue (RMR) of December 31, 2020. The company with the highest RMR is ranked as No. 1, and so on. For each of the 100 companies, the following information is provided, from left to right:
SDM 100 companies are then re-ranked by several other criteria, including total annual revenue; residential subscribers; and non-residential sales revenue.
Note: An e following the figure indicates it is an SDM estimate.
SDM 100 companies are ranked in the table above by the amount of their sales/installation revenue from non-residential projects. Note that some larger companies and those that are very active in the non-residential market are not ranked because such detailed information was not publicly available or they did not report it to SDM. Companies that reported less than $500,000 in sales/installation revenue are not included in this ranking.
SDM 100 companies are ranked in the table above by the number of their residential subscribers (customers). Note that some of the larger companies such as ADT and Brinks Home Security are not ranked because such detailed information is not publicly available or they did not report it to SDM. Companies that reported fewer than 100 residential subscribers are not included in this ranking.