BIRD vs CAR: Correlation
How closely do Smartbird, Inc. (BIRD) and Avis Budget Group, Inc. (CAR) trade together? Their weekly returns over three years give a correlation of 0.47, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BIRD and CAR?
On 3 years of weekly data the BIRD/CAR correlation comes out at 0.47, moderate. Recent behaviour matches the longer record: 0.51 over 1 year against 0.47 over 3. The 5-year figure is 0.45, and annualized covariance runs at 9505.3 %².
By 3-year correlation, CAR places #7 of the 17 assets tracked against BIRD. Their recent paths diverged sharply: over the last 12 months CAR outperformed by 40.3 percentage points (-51.4% for BIRD against -11.1% for CAR). Risk is not evenly split, since BIRD carries 2.5 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.
BIRD vs CAR: side by side
| BIRD (Smartbird, Inc.) | CAR (Avis Budget Group, Inc.) | |
|---|---|---|
| 1-year return | -51.4% | -11.1% |
| 5-year return | -99.5% | +63.5% |
| Volatility (ann.) | 225.6% | 89.7% |
| Beta vs S&P 500 | 3.94 | 1.84 |
| Max drawdown (3Y) | -92.3% | -80.8% |
| Market cap | – | $4.9B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BIRD | CAR |
|---|---|---|
| 2022 | -84.0% | -20.9% |
| 2023 | -49.4% | +13.8% |
| 2024 | -71.6% | -54.5% |
| 2025 | -41.2% | +59.2% |
| 2026 | -22.7% | +8.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BIRD and CAR good diversifiers for each other?
Reasonably. At 0.47, BIRD and CAR keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between BIRD and CAR?
As of 2026-08-27, the correlation of weekly returns between BIRD and CAR is 0.47 over 3 years, 0.51 over 1 year and 0.45 over 5 years.
Is CAR a good diversifier for BIRD?
Reasonably. At 0.47, BIRD and CAR keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.47 mean?
On the −1 to +1 scale, 0.47 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/bird-vs-car.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/bird-vs-car/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: BIRD correlations · CAR correlations
