SEIC vs VTI: Correlation
SEI Investments Company (SEIC) and Vanguard Total Stock Market ETF (VTI) show a strong relationship: their 3-year correlation of weekly returns is 0.64.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are SEIC and VTI?
Over the past 3 years, SEIC and VTI moved with a correlation of 0.64, which is strong. The past 12 months show a weaker link (0.33) than the 3-year average (0.64). Over 5 years the correlation is 0.72, and the annualized covariance of weekly returns is 192.8 %².
Among the 14 assets we track against SEIC, VTI ranks #5 by 3-year correlation. Neither side won the trailing year by much: +24.4% against +20.7%.
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.
SEIC vs VTI: side by side
| SEIC (SEI Investments Company) | VTI (Vanguard Total Stock Market ETF) | |
|---|---|---|
| 1-year return | +24.4% | +20.7% |
| 5-year return | +89.5% | +74.8% |
| Volatility (ann.) | 20.7% | 14.6% |
| Beta vs S&P 500 | 0.91 | 1.01 |
| Max drawdown (3Y) | -23.3% | -19.3% |
| Market cap | $13.4B | – |
| P/E (trailing) | 19.6 | – |
| Dividend yield | 0.94% | 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 $2,290.0B under management, 3140 holdings, a 0.03% expense ratio, a 1.06% trailing dividend yield.
Year-by-year returns
| Year | SEIC | VTI |
|---|---|---|
| 2022 | -2.9% | -19.5% |
| 2023 | +10.6% | +26.0% |
| 2024 | +31.5% | +23.8% |
| 2025 | +0.6% | +17.1% |
| 2026 | +36.5% | +14.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are SEIC and VTI good diversifiers for each other?
To a limited degree. At 0.64 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between SEIC and VTI?
Using weekly returns as of 2026-08-27: 0.64 over 3 years, with 0.33 over the last year and 0.72 over 5 years.
Is VTI a good diversifier for SEIC?
To a limited degree. At 0.64 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.64 mean?
On the −1 to +1 scale, 0.64 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
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$ curl https://www.pairbook.io/api/v1/pairs/seic-vs-vti.json
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Related comparisons
Hubs: SEIC correlations · VTI correlations
