Alphatec (ATEC) vs Tandem Diabetes Care (TNDM)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 9, 2026.
Summary
Tandem Diabetes Care (TNDM) has outperformed Alphatec (ATEC) over the past year, gaining 2.2% versus a loss of 26.2%. Over five years, ATEC leads with a -15.1% price change compared with -87.5% for TNDM. Alphatec is the larger company by market cap ($1.60 billion vs $1.09 billion), about 1.5 times the size.
On valuation, Alphatec trades at a lower forward P/E (17.2x vs 98.6x for Tandem Diabetes Care).
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 | ATEC | TNDM |
|---|---|---|
| Share price | $10.35 | $15.68 |
| Market cap | $1.60B | $1.09B |
| 1-day change | +0.98% | -1.04% |
| YTD return | -50.81% | -28.69% |
| 1-year return | -26.18% | +2.18% |
| 5-year return | -15.09% | -87.50% |
| Forward P/E | 17.24 | 98.61 |
| EPS (TTM) | $-0.72 | $-0.91 |
| Dividend yield | 0.00% | 0.00% |
| Annual dividend | $0.00 | $0.00 |
| 52-week high | $23.29 | $29.65 |
| 52-week low | $6.82 | $12.26 |
| Distance from 52-week high | -55.56% | -47.13% |
| Analyst consensus | none | buy |
| Avg. price target upside | +52.56% | +77.74% |
| Average volume | 2.14M | 2.01M |
| Shares outstanding | 154.45M | 69.58M |
| Employees | 913 | 2,500 |
| Sector | Health Care | Health Care |
| Industry | Medical/Dental Instruments | Medical/Dental Instruments |
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
- TNDM has outperformed ATEC by 28.4 percentage points over the past year.
About Alphatec
ATEC stock →Alphatec Holdings, Inc., a medical technology company, designs, develops, and advances technologies for the surgical treatment of spinal disorders in the United States and internationally. The company manufactures and sells implants, instruments, imaging equipment, and spare parts.
Health Care · Medical/Dental Instruments · 913 employees
About Tandem Diabetes Care
TNDM stock →Tandem Diabetes Care, Inc. designs, develops, and commercializes technology solutions for people living with diabetes in the United States and internationally.
Health Care · Medical/Dental Instruments · 2,500 employees
ATEC vs TNDM FAQ
Which is bigger, Alphatec or Tandem Diabetes Care?
Alphatec (ATEC) is larger, with a market capitalization of $1.60B compared with $1.09B for Tandem Diabetes Care (TNDM).
Which stock has performed better over the past year, ATEC or TNDM?
TNDM returned +2.18% over the past 12 months, compared with -26.18% for ATEC (price return, excluding dividends). Past performance does not predict future results.
Are Alphatec and Tandem Diabetes Care in the same industry?
Yes. Both are classified in the Medical/Dental Instruments industry within the Health Care sector.