NYSE:ADT#1 of 5 in this industry1 market
ADT Security Services
alarm systemshome security systemshome monitoring
Revenue$5.1Bfrom a sourced record
Markets named in1across this research
Incumbent in1the one to displace
Rank in industry1 / 5by revenue
01
Where it competes
Every market in this research that names ADT Security Services. Where it is the named incumbent it leads the list. The entry signal is the market’s, not the company’s — it says how open that market is to someone new.
| Market | Role | Share | Entry signal |
|---|---|---|---|
| Alarm Monitoring & Security Systems 561621 Security systems services (except locksmiths) |
Incumbent | — | 58% entry signal |
02
Others in Security systems services (except locksmiths)
Ranked by revenue. Companies that disclose none follow, ordered by how many markets name them.
| 1 | ADT Security Services NYSE:ADT | $5.1B |
| 2 | Ring and the DIY camera shelf Private | — |
| 3 | SimpliSafe Private | — |
| 4 | TELUS SmartHome Security Private | — |
| 5 | Vivint Delisted | — |
Company details are from the search.cos database (snapshot 2026-10-10); market roles, shares and sourced revenue are from the research records linked above. Filed under the industry it serves — a software vendor sits with the industry that buys from it. Ranks convert currencies at approximate rates to put companies in order; every figure shown is in the currency it was reported in.