BIRD vs SPY: Correlation
Smartbird, Inc. (BIRD) and SPDR S&P 500 ETF Trust (SPY) show a weak relationship: their 3-year correlation of weekly returns is 0.25.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BIRD and SPY?
Over the past 3 years, BIRD and SPY moved with a correlation of 0.25, which is weak. Lately the two have moved closer together, with the 1-year correlation at 0.38 versus 0.25 over 3 years. Over 5 years the correlation is 0.26, and the annualized covariance of weekly returns is 823.8 %².
Among the 17 assets we track against BIRD, SPY sits near the bottom by co-movement, at rank #13. Correlation aside, the last 12 months split them widely, with SPY ahead by 72.0 points (-51.4% versus +20.6%). One caveat on sizing: BIRD is 15.6 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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.
BIRD vs SPY: side by side
| BIRD (Smartbird, Inc.) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | -51.4% | +20.6% |
| 5-year return | -99.5% | +82.4% |
| Volatility (ann.) | 225.6% | 14.5% |
| Beta vs S&P 500 | 3.94 | 1.00 |
| Max drawdown (3Y) | -92.3% | -18.8% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 1.01% |
| Expense ratio | – | 0.09% |
| Assets under management | – | $795.3B |
| Sector / category | US Listed | ETF · US Large Cap |
SPY is a Large Blend fund from State Street Investment Management: $795.3B under management, 504 holdings, a 0.09% expense ratio, a 1.01% trailing dividend yield.
Year-by-year returns
| Year | BIRD | SPY |
|---|---|---|
| 2022 | -84.0% | -18.2% |
| 2023 | -49.4% | +26.2% |
| 2024 | -71.6% | +24.9% |
| 2025 | -41.2% | +17.7% |
| 2026 | -22.7% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BIRD and SPY good diversifiers for each other?
Reasonably. At 0.25, BIRD and SPY keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between BIRD and SPY?
The BIRD/SPY correlation stands at 0.25 on a 3-year window (1 year: 0.38, 5 years: 0.26), computed from weekly returns as of 2026-08-27.
Is SPY a good diversifier for BIRD?
Reasonably. At 0.25, BIRD and SPY keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.25 mean?
On the −1 to +1 scale, 0.25 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.
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Related comparisons
Hubs: BIRD correlations · SPY correlations
