IMNN vs SPRO: Correlation
How closely do Imunon, Inc. (IMNN) and Spero Therapeutics, Inc. (SPRO) trade together? Their weekly returns over three years give a correlation of 0.48, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are IMNN and SPRO?
Across a 3-year window, the weekly returns of IMNN and SPRO correlate at 0.48, moderate. The past 12 months show a weaker link (0.19) than the 3-year average (0.48). Stretching to 5 years gives 0.39, with an annualized covariance of 11062.0 %².
Few assets follow IMNN as closely as SPRO, which ranks #2 of 14 tracked partners. Their recent paths diverged sharply: over the last 12 months SPRO outperformed by 34.7 percentage points (-73.6% for IMNN against -38.9% for SPRO).
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.
IMNN vs SPRO: side by side
| IMNN (Imunon, Inc.) | SPRO (Spero Therapeutics, Inc.) | |
|---|---|---|
| 1-year return | -73.6% | -38.9% |
| 5-year return | -99.2% | -93.3% |
| Volatility (ann.) | 144.4% | 159.8% |
| Beta vs S&P 500 | -0.09 | 1.61 |
| Max drawdown (3Y) | -96.5% | -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 | IMNN | SPRO |
|---|---|---|
| 2022 | -83.3% | -89.2% |
| 2023 | -49.6% | -15.0% |
| 2024 | +39.7% | -29.9% |
| 2025 | -69.3% | +126.2% |
| 2026 | -58.0% | -48.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are IMNN and SPRO good diversifiers for each other?
Reasonably. At 0.48, IMNN and SPRO keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between IMNN and SPRO?
As of 2026-08-27, the correlation of weekly returns between IMNN and SPRO is 0.48 over 3 years, 0.19 over 1 year and 0.39 over 5 years.
Is SPRO a good diversifier for IMNN?
Reasonably. At 0.48, IMNN and SPRO keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.48 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/imnn-vs-spro.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/imnn-vs-spro/)
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Related comparisons
Hubs: IMNN correlations · SPRO correlations
