ATEC vs PRLB: Correlation
Measured on weekly returns over the past three years, Alphatec Holdings, Inc. (ATEC) and Proto Labs, Inc. (PRLB) carry a correlation of 0.43, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ATEC and PRLB?
Across a 3-year window, the weekly returns of ATEC and PRLB correlate at 0.43, moderate. The past 12 months show a weaker link (-0.08) than the 3-year average (0.43). Stretching to 5 years gives 0.40, with an annualized covariance of 1534.3 %².
Few assets follow ATEC as closely as PRLB, which ranks #1 of 11 tracked partners. The last year tells two different stories: PRLB led by 98.5 percentage points, -40.9% for ATEC against +57.6% for PRLB.
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
ATEC vs PRLB: side by side
| ATEC (Alphatec Holdings, Inc.) | PRLB (Proto Labs, Inc.) | |
|---|---|---|
| 1-year return | -40.9% | +57.6% |
| 5-year return | -29.0% | +10.1% |
| Volatility (ann.) | 71.5% | 50.3% |
| Beta vs S&P 500 | 0.88 | 1.52 |
| Max drawdown (3Y) | -70.3% | -33.6% |
| Market cap | $1.5B | $1.9B |
| P/E (trailing) | – | 62.6 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ATEC | PRLB |
|---|---|---|
| 2022 | +8.0% | -50.3% |
| 2023 | +22.3% | +52.6% |
| 2024 | -39.2% | +0.3% |
| 2025 | +129.2% | +29.4% |
| 2026 | -54.5% | +58.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ATEC and PRLB good diversifiers for each other?
A fair diversifier. At 0.43, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between ATEC and PRLB?
Using weekly returns as of 2026-08-27: 0.43 over 3 years, with -0.08 over the last year and 0.40 over 5 years.
Is PRLB a good diversifier for ATEC?
A fair diversifier. At 0.43, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.43 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
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Related comparisons
Hubs: ATEC correlations · PRLB correlations
