VO — Vanguard Mid-Cap Index Fund ETF Shares

VO Price Performance — Growth of $10,000

Value of a $10,000 investment in VO over time, compared with SPY. Both lines are rebased to $10,000 on the first shared date. Based on total returns — prices are adjusted for dividends and splits, so this assumes distributions were reinvested. Hover or tap the chart for exact values.

VO Drawdown

The "underwater" chart: VO's decline from its highest prior value at each point in time. It shows how deep past losses ran and how long the fund took to recover to break-even.

Overview

The Vanguard Mid-Cap Index Fund ETF Shares, trading under the ticker VO, operates within the US Mid Cap category managed by the issuer Vanguard. This fund holds a significant position with $224 billion in assets under management and trades at a price of $81.35 per share. It currently carries an overall rank of #150 out of 458 tracked ETFs across all categories, receiving an ETFValuer grade of B with a score of 66.8 out of 100. The fund offers a low cost structure with an expense ratio of just 0.03% while providing an income profile reflected by a dividend yield of 3.70%. Its substantial asset base and competitive pricing suggest broad investor adoption relative to the 14 other ETFs tracked in its specific category. The combination of high assets and a low expense ratio positions the fund as a cost-effective vehicle for exposure to the mid-cap segment.

Short-term performance data shows the fund gained +0.99% over one day and +1.79% over one week, followed by a +1.24% increase over the past month. Over the longer horizon, the fund posted a +6.36% return for the three-month period and accelerated to +9.72% over six months. Year-to-date returns have reached +11.97%, while the one-year return stands at +14.85%. The three-year return figure is notably higher at +50.15%, indicating a sustained upward trend over the extended period. This progression from single-digit monthly gains to double-digit annual returns demonstrates a pattern of consistent growth across the measured timeframes.

The fund is assigned a Low volatility label and exhibits a beta of 0.95, suggesting price movements that are generally less aggressive than the broader market. A Sharpe ratio of 0.78 indicates the fund has generated a moderate amount of excess return per unit of risk taken during the measured period. However, the maximum drawdown of -19.02% highlights the potential for significant temporary losses during market downturns. This combination of low volatility and a beta below 1.0 implies the fund tends to move less than the market, yet the drawdown figure confirms it still experiences substantial declines. The risk profile reflects a balance between moderate risk-adjusted returns and the inherent volatility of the mid-cap equity sector.

AI-generated summary based on the data on this page.

VO Top Holdings

Holdings as of 2026-03-31 per the fund's most recent SEC N-PORT-P filing. Top 10 holdings make up 9.0% of net assets — a rough gauge of concentration risk (the higher this figure, the more the fund's return depends on a handful of names). To see how VO's holdings overlap with other ETFs you own or are considering, check the Stock Overlap tool.

Which Funds Overlap With VO

Holding two funds that own the same companies adds cost and complexity without adding much diversification. These tracked ETFs share the most names with VO's top 10 — VOT overlaps most, holding 5 of the same companies as VO's top 10 (4.8% of VO's assets).

Compares the top 10 reported holdings of each fund, so it's a floor on true overlap — two S&P 500 trackers overlap ~100% even when only 10 names are listed. Use the Stock Overlap tool to search by individual company.

Market Backdrop

10-Year Treasury Yield: 4.65% (as of 2026-07-27) — The yield on 10-year US Treasury bonds — the standard "risk-free rate" benchmark used to contextualize this fund’s Sharpe ratio and returns.

CBOE Volatility Index (VIX): 18.67 (as of 2026-07-27) — A real-time gauge of expected S&P 500 volatility over the next 30 days — useful context for this fund’s own volatility label.

Federal Funds Rate: 3.63% (as of 2026-06-01) — The Federal Reserve’s target policy rate, which anchors short-term borrowing costs across the economy.

VO Liquidity, Domicile & Tax Treatment

Liquidity: Quoted bid/ask spread is — and average daily volume is 3.0M/day. Tighter spreads and higher volume mean lower round-trip trading costs; this is a live-market snapshot and can widen during volatile sessions. AUM of $224B provides ample scale, supporting tight spreads and issuer commitment to keep the fund open.

Domicile & tax treatment: VO is a US-domiciled, SEC-registered ('40 Act) exchange-traded fund. Dividends and capital gains distributions are reported to US investors on Form 1099-DIV, and the fund is not subject to the PFIC reporting or UCITS-specific rules that apply to Irish- or Luxembourg-domiciled funds. Non-US investors should note that US-domiciled ETFs are generally subject to 30% US withholding tax on dividends (unless reduced by treaty) and to US estate tax exposure on the position — Irish-domiciled UCITS ETFs tracking the same index often avoid both, which is why non-US residents frequently prefer the UCITS equivalent where one exists. This is general information, not tax advice — consult a tax professional for your situation.

VO Performance History

How VO Compares to Other US Mid Cap ETFs