FSLY vs IPGP: Correlation
Measured on weekly returns over the past three years, Fastly, Inc. (FSLY) and IPG Photonics Corporation (IPGP) carry a correlation of 0.50, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FSLY and IPGP?
Across a 3-year window, the weekly returns of FSLY and IPGP correlate at 0.50, moderate. Recent behaviour matches the longer record: 0.49 over 1 year against 0.50 over 3. Stretching to 5 years gives 0.49, with an annualized covariance of 2448.1 %².
IPGP is one of the assets that tracks FSLY most closely: it ranks #3 out of the 11 assets we track against FSLY. Their recent paths diverged sharply: over the last 12 months FSLY outperformed by 236.6 percentage points (+229.0% for FSLY against -7.6% for IPGP). Risk is not evenly split, since FSLY carries 2.1 times the volatility of the other side.
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.
FSLY vs IPGP: side by side
| FSLY (Fastly, Inc.) | IPGP (IPG Photonics Corporation) | |
|---|---|---|
| 1-year return | +229.0% | -7.6% |
| 5-year return | -43.5% | -55.1% |
| Volatility (ann.) | 101.8% | 48.0% |
| Beta vs S&P 500 | 1.26 | 1.24 |
| Max drawdown (3Y) | -80.0% | -55.1% |
| Market cap | $3.9B | $3.3B |
| P/E (trailing) | – | 113.6 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | FSLY | IPGP |
|---|---|---|
| 2022 | -76.9% | -45.0% |
| 2023 | +117.3% | +14.7% |
| 2024 | -47.0% | -33.0% |
| 2025 | +7.8% | -1.5% |
| 2026 | +142.0% | +7.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FSLY and IPGP good diversifiers for each other?
Somewhat, no more. With 0.50 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between FSLY and IPGP?
As of 2026-08-27, the correlation of weekly returns between FSLY and IPGP is 0.50 over 3 years, 0.49 over 1 year and 0.49 over 5 years.
Is IPGP a good diversifier for FSLY?
Somewhat, no more. With 0.50 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.50 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.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/fsly-vs-ipgp.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/fsly-vs-ipgp/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: FSLY correlations · IPGP correlations
