NTZ vs SPRO: Correlation
Natuzzi, S.p.A. (NTZ) and Spero Therapeutics, Inc. (SPRO) show a moderate relationship: their 3-year correlation of weekly returns is 0.39.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are NTZ and SPRO?
On 3 years of weekly data the NTZ/SPRO correlation comes out at 0.39, moderate. The past 12 months show a weaker link (0.03) than the 3-year average (0.39). The 5-year figure is 0.28, and annualized covariance runs at 3211.5 %².
Few assets follow NTZ as closely as SPRO, which ranks #1 of 10 tracked partners. Their recent paths diverged sharply: over the last 12 months SPRO outperformed by 27.8 percentage points (-66.7% for NTZ against -38.9% for SPRO). Risk is not evenly split, since SPRO carries 3.1 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.
NTZ vs SPRO: side by side
| NTZ (Natuzzi, S.p.A.) | SPRO (Spero Therapeutics, Inc.) | |
|---|---|---|
| 1-year return | -66.7% | -38.9% |
| 5-year return | -93.4% | -93.3% |
| Volatility (ann.) | 52.2% | 159.8% |
| Beta vs S&P 500 | 1.05 | 1.61 |
| Max drawdown (3Y) | -86.3% | -68.9% |
| Market cap | – | $0.1B |
| P/E (trailing) | – | 8.6 |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | NTZ | SPRO |
|---|---|---|
| 2022 | -51.7% | -89.2% |
| 2023 | -12.0% | -15.0% |
| 2024 | -29.1% | -29.9% |
| 2025 | -50.8% | +126.2% |
| 2026 | -57.6% | -48.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are NTZ and SPRO good diversifiers for each other?
Reasonably. At 0.39, NTZ and SPRO keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between NTZ and SPRO?
As of 2026-08-27, the correlation of weekly returns between NTZ and SPRO is 0.39 over 3 years, 0.03 over 1 year and 0.28 over 5 years.
Is SPRO a good diversifier for NTZ?
Reasonably. At 0.39, NTZ and SPRO keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.39 mean?
On the −1 to +1 scale, 0.39 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/ntz-vs-spro.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/ntz-vs-spro/)
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Related comparisons
Hubs: NTZ correlations · SPRO correlations
