ATS (ATS) vs ERock (EROC)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 7, 2026.
Summary
ATS is the larger company by market cap ($1.74 billion vs $630.1 million), about 2.8 times the size. On valuation, ATS trades at a lower forward P/E (13.0x vs 25.8x for ERock).
Summary generated from market data by MetaCap's automated system. Methodology
Relative performance
Percent change in share price from the first common trading day shown; excludes dividends.
Head-to-head
| Metric | ATS | EROC |
|---|---|---|
| Share price | $17.75 | $13.08 |
| Market cap | $1.74B | $630.12M |
| 1-day change | -2.74% | -4.11% |
| YTD return | -35.55% | — |
| 1-year return | -32.69% | — |
| 5-year return | -48.36% | — |
| P/E ratio (TTM) | 50.71 | 46.71 |
| Forward P/E | 13.03 | 25.77 |
| EPS (TTM) | $0.35 | $0.28 |
| Dividend yield | 0.00% | 0.00% |
| Annual dividend | $0.00 | $0.00 |
| 52-week high | $35.82 | $20.70 |
| 52-week low | $17.61 | $8.88 |
| Distance from 52-week high | -50.45% | -36.81% |
| Analyst consensus | buy | strong_buy |
| Avg. price target upside | — | +72.02% |
| Average volume | 243.93K | 2.45M |
| Shares outstanding | 98.13M | 48.17M |
| Employees | 7,000 | 385 |
| Sector | Industrials | Energy |
| Industry | Industrial Machinery/Components | Industrial Machinery/Components |
Highlighted cells mark the higher value for growth, returns, margins and yield, and the lower value for P/E ratios. Highlighting is a mechanical comparison, not a recommendation.
Key differences
- ATS is about 2.8 times larger than ERock by market value ($1.74B vs $630.12M).
- The two companies sit in different sectors: ATS in Industrials and ERock in Energy.
About ATS
ATS stock →ATS Corporation, together with its subsidiaries, engages in the planning, designing, building, commissioning, and servicing of automated manufacturing and assembly systems worldwide. The company offers pre-automation services comprising discovery and analysis, concept development, simulation, and total cost of ownership modeling; post-automation services, including training, process optimization, preventive maintenance, emergency and on-call support, spare parts, retooling, retrofits, and equipment relocation; and contract manufacturing services, as well as after-sales services.
Industrials · Industrial Machinery/Components · 7,000 employees
About ERock
EROC stock →ERock, Inc. designs, deploys, sells, operates, and maintains distributed power generation systems designed to provide power for commercial and industrial customers in the United States.
Energy · Industrial Machinery/Components · 385 employees
ATS vs EROC FAQ
Which is bigger, ATS or ERock?
ATS (ATS) is larger, with a market capitalization of $1.74B compared with $630.12M for ERock (EROC).
Which has the lower P/E ratio, ATS or EROC?
EROC has the lower trailing P/E at 46.7, versus 50.7 for ATS. A lower P/E is not by itself a sign of a better investment; it can reflect slower expected growth or higher risk.
Are ATS and ERock in the same industry?
Yes. Both are classified in the Industrial Machinery/Components industry within the Industrials sector.