BLK vs VTI: Correlation
BlackRock (BLK) and Vanguard Total Stock Market ETF (VTI) show a strong relationship: their 3-year correlation of weekly returns is 0.70.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BLK and VTI?
Over the past 3 years, BLK and VTI moved with a correlation of 0.70, which is strong. The link has loosened recently: the 1-year correlation (0.56) runs below the 3-year figure (0.70). Over 5 years the correlation is 0.78, and the annualized covariance of weekly returns is 254.5 %².
Among the 42 assets we track against BLK, VTI ranks #7 by 3-year correlation. Correlation aside, the last 12 months split them widely, with VTI ahead by 15.4 points (+5.3% versus +20.7%). On a rolling one-year basis the correlation drifted between 0.55 and 0.86, a moderate band. Risk is not evenly split, since BLK carries 1.7 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.
BLK vs VTI: side by side
| BLK (BlackRock) | VTI (Vanguard Total Stock Market ETF) | |
|---|---|---|
| 1-year return | +5.3% | +20.7% |
| 5-year return | +38.9% | +74.8% |
| Volatility (ann.) | 24.7% | 14.6% |
| Beta vs S&P 500 | 1.19 | 1.01 |
| Max drawdown (3Y) | -23.7% | -19.3% |
| Market cap | $189.7B | – |
| P/E (trailing) | 28.1 | – |
| Dividend yield | 1.86% | 1.06% |
| Expense ratio | – | 0.03% |
| Assets under management | – | $2,290.0B |
| Sector / category | Financials | 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 | BLK | VTI |
|---|---|---|
| 2022 | -20.4% | -19.5% |
| 2023 | +17.9% | +26.0% |
| 2024 | +29.3% | +23.8% |
| 2025 | +6.6% | +17.1% |
| 2026 | +10.3% | +14.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Fund exposure
BLK represents 0.21% of VTI's portfolio, so part of any move in VTI is BLK itself, and the correlation between them is partly mechanical.
Are BLK and VTI good diversifiers for each other?
Somewhat, no more. With 0.70 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between BLK and VTI?
As of 2026-08-27, the correlation of weekly returns between BLK and VTI is 0.70 over 3 years, 0.56 over 1 year and 0.78 over 5 years.
Is VTI a good diversifier for BLK?
Somewhat, no more. With 0.70 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.70 mean?
A reading of 0.70 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
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Related comparisons
Hubs: BLK correlations · VTI correlations
