NEPH vs TLSI: Correlation
Measured on weekly returns over the past three years, Nephros, Inc. (NEPH) and TriSalus Life Sciences, Inc. (TLSI) carry a correlation of 0.30, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are NEPH and TLSI?
Over the past 3 years, NEPH and TLSI moved with a correlation of 0.30, which is moderate. The relationship has been stable: the 1-year correlation (0.26) sits close to the 3-year figure. Over 5 years the correlation is 0.20, and the annualized covariance of weekly returns is 1765.0 %².
Few assets follow NEPH as closely as TLSI, which ranks #2 of 16 tracked partners. The trailing year gives NEPH the advantage: +6.4% versus -3.3%, a 9.7-point spread.
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.
NEPH vs TLSI: side by side
| NEPH (Nephros, Inc.) | TLSI (TriSalus Life Sciences, Inc.) | |
|---|---|---|
| 1-year return | +6.4% | -3.3% |
| 5-year return | -48.4% | -49.6% |
| Volatility (ann.) | 66.5% | 89.7% |
| Beta vs S&P 500 | 0.07 | 1.13 |
| Max drawdown (3Y) | -65.2% | -75.4% |
| Market cap | – | $0.3B |
| P/E (trailing) | 25.4 | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | NEPH | TLSI |
|---|---|---|
| 2022 | -80.3% | +1.5% |
| 2023 | +198.3% | -15.8% |
| 2024 | -57.5% | -40.7% |
| 2025 | +232.0% | +39.3% |
| 2026 | -11.7% | -29.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are NEPH and TLSI good diversifiers for each other?
Reasonably. At 0.30, NEPH and TLSI keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between NEPH and TLSI?
The NEPH/TLSI correlation stands at 0.30 on a 3-year window (1 year: 0.26, 5 years: 0.20), computed from weekly returns as of 2026-08-27.
Is TLSI a good diversifier for NEPH?
Reasonably. At 0.30, NEPH and TLSI keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.30 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/neph-vs-tlsi.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/neph-vs-tlsi/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: NEPH correlations · TLSI correlations
