AMBA vs VTI: Correlation
How closely do Ambarella, Inc. (AMBA) and Vanguard Total Stock Market ETF (VTI) trade together? Their weekly returns over three years give a correlation of 0.52, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AMBA and VTI?
Over the past 3 years, AMBA and VTI moved with a correlation of 0.52, which is moderate. The past 12 months show a weaker link (0.33) than the 3-year average (0.52). Over 5 years the correlation is 0.56, and the annualized covariance of weekly returns is 453.8 %².
Among the 10 assets we track against AMBA, VTI sits near the bottom by co-movement, at rank #6. Correlation aside, the last 12 months split them widely, with VTI ahead by 21.8 points (-1.1% versus +20.7%). One caveat on sizing: AMBA is 4.1 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.
AMBA vs VTI: side by side
| AMBA (Ambarella, Inc.) | VTI (Vanguard Total Stock Market ETF) | |
|---|---|---|
| 1-year return | -1.1% | +20.7% |
| 5-year return | -32.5% | +74.8% |
| Volatility (ann.) | 59.8% | 14.6% |
| Beta vs S&P 500 | 2.14 | 1.01 |
| Max drawdown (3Y) | -51.4% | -19.3% |
| Market cap | $3.1B | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 1.06% |
| Expense ratio | – | 0.03% |
| Assets under management | – | $2,290.0B |
| Sector / category | US Listed | ETF · US Large Cap |
VTI, Vanguard's Large Blend fund, carries $2,290.0B under management, 3140 holdings, a 0.03% expense ratio, a 1.06% trailing dividend yield.
Year-by-year returns
| Year | AMBA | VTI |
|---|---|---|
| 2022 | -59.5% | -19.5% |
| 2023 | -25.5% | +26.0% |
| 2024 | +18.7% | +23.8% |
| 2025 | -2.6% | +17.1% |
| 2026 | +0.5% | +14.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AMBA and VTI good diversifiers for each other?
Only partially. A correlation of 0.52 means AMBA and VTI 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 AMBA and VTI?
The AMBA/VTI correlation stands at 0.52 on a 3-year window (1 year: 0.33, 5 years: 0.56), computed from weekly returns as of 2026-08-27.
Is VTI a good diversifier for AMBA?
Only partially. A correlation of 0.52 means AMBA and VTI share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.52 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/amba-vs-vti.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/amba-vs-vti/)
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Related comparisons
Hubs: AMBA correlations · VTI correlations
