ADT market cap ADT
Share price times shares outstanding: what the whole company sells for, since 2018.
- Today, Oct 23, 2026
- $5B
- Highest close in our data
- $9.5B
- Jun 2021
ADT is worth $5B at the close on Oct 23, 2026, at $6.90 a share.
That is down 31% over the last year and down 27% over five years.
Its highest close in our data was $9.5B in Jun 2021.
Market cap over time
Year by year
| Year | End of year | Low | High | Change |
|---|---|---|---|---|
| 2026 so far | $5B | $4.6B | $6.8B | −24% |
| 2025 | $6.7B | $6.2B | $7.3B | +6% |
| 2024 | $6.3B | $5.7B | $7.1B | +1% |
| 2023 | $6.3B | $5.2B | $8.9B | −24% |
| 2022 | $8.3B | $5.7B | $8.9B | +20% |
| 2021 | $6.9B | $5.9B | $9.5B | +8% |
| 2020 | $6.4B | $2.9B | $9.3B | +11% |
| 2019 | $5.8B | $3.4B | $6.9B | +25% |
| 2018 | $4.6B | $4.6B | $7.1B | n/a |
Against its peers
Companies in Industrials nearest ADT's size, closest first, today.
| Company | Market cap |
|---|---|
| ADTADT | $5B |
| KBRKBR | $4.9B |
| KRMNKarman | $4.9B |
| SNDRSchneider National | $5.3B |
| NOVTNovanta | $5.3B |
| ROADConstruction Partners | $4.7B |
| RHIRobert Half | $4.7B |
| AGXArgan | $4.6B |
| POWLPowell Industries | $5.5B |
| MTRNMATERION | $4.6B |
| BCOBrinks | $4.6B |
| Peer median | $4.8B |
What the market cap tells you
Share price times shares outstanding: what the whole company sells for today.
Size, not quality. Large caps move slower and are covered more. That is all it tells you.
More on ADT
Valuation data, not investment advice. Prices as of . Reported figures come from the company's filings with the SEC.