FLD vs TGEN: Correlation
How closely do Fold Holdings, Inc. (FLD) and Tecogen Inc. (TGEN) trade together? Their weekly returns over three years give a correlation of 0.36, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are FLD and TGEN?
Across a 3-year window, the weekly returns of FLD and TGEN correlate at 0.36, moderate. The past 12 months show a tighter link (0.50) than the 3-year average (0.36). Stretching to 5 years gives 0.32, with an annualized covariance of 3020.4 %².
Few assets follow FLD as closely as TGEN, which ranks #1 of 13 tracked partners. Correlation aside, the last 12 months split them widely, with TGEN ahead by 23.8 points (-83.6% versus -59.8%).
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.
FLD vs TGEN: side by side
| FLD (Fold Holdings, Inc.) | TGEN (Tecogen Inc.) | |
|---|---|---|
| 1-year return | -83.6% | -59.8% |
| 5-year return | -93.7% | +76.1% |
| Volatility (ann.) | 78.8% | 106.2% |
| Beta vs S&P 500 | 0.49 | 1.92 |
| Max drawdown (3Y) | -96.7% | -83.4% |
| Market cap | – | $0.1B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | FLD | TGEN |
|---|---|---|
| 2022 | – | +4.2% |
| 2023 | +5.3% | -35.2% |
| 2024 | +5.2% | +80.9% |
| 2025 | -76.5% | +237.2% |
| 2026 | -76.6% | -35.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are FLD and TGEN good diversifiers for each other?
Reasonably. At 0.36, FLD and TGEN keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between FLD and TGEN?
Using weekly returns as of 2026-08-27: 0.36 over 3 years, with 0.50 over the last year and 0.32 over 5 years.
Is TGEN a good diversifier for FLD?
Reasonably. At 0.36, FLD and TGEN keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.36 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/fld-vs-tgen.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/fld-vs-tgen/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: FLD correlations · TGEN correlations
