BTCS vs PULM: Correlation
Measured on weekly returns over the past three years, BTCS Inc. (BTCS) and Pulmatrix, Inc. (PULM) carry a correlation of 0.67, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BTCS and PULM?
Across a 3-year window, the weekly returns of BTCS and PULM correlate at 0.67, strong. The past 12 months show a weaker link (0.02) than the 3-year average (0.67). Stretching to 5 years gives 0.60, with an annualized covariance of 15720.6 %².
In BTCS's tracked universe of 20 assets, PULM sits right near the top at #3. Over the last 12 months BTCS came out ahead by 6.4 percentage points (-62.3% against -68.7%).
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.
BTCS vs PULM: side by side
| BTCS (BTCS Inc.) | PULM (Pulmatrix, Inc.) | |
|---|---|---|
| 1-year return | -62.3% | -68.7% |
| 5-year return | -79.2% | -90.6% |
| Volatility (ann.) | 161.4% | 144.8% |
| Beta vs S&P 500 | 0.34 | -0.18 |
| Max drawdown (3Y) | -84.9% | -88.1% |
| Market cap | $0.1B | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BTCS | PULM |
|---|---|---|
| 2022 | -79.6% | -55.7% |
| 2023 | +158.7% | -52.1% |
| 2024 | +51.5% | +275.3% |
| 2025 | +8.1% | -68.1% |
| 2026 | -39.8% | -31.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BTCS and PULM good diversifiers for each other?
Only partially. A correlation of 0.67 means BTCS and PULM share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between BTCS and PULM?
As of 2026-08-27, the correlation of weekly returns between BTCS and PULM is 0.67 over 3 years, 0.02 over 1 year and 0.60 over 5 years.
Is PULM a good diversifier for BTCS?
Only partially. A correlation of 0.67 means BTCS and PULM share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.67 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/btcs-vs-pulm.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/btcs-vs-pulm/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: BTCS correlations · PULM correlations
