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Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.

ETFIQetfiq.com · independent ETF data

EDV vs VO: how they differ

EDV and VO hold 0% of their weight in the same names, and VO returned more over the year.

Vanguard Extended Duration Treasury Index Fund and Vanguard Mid-Cap Index Fund.

What they hold in common

By the books each fund has filed, EDV and VO hold 0% of their money in the same securities at the same weight.

Largest positions each one holds and the other does not
Only in EDVOnly in VO
United States Treasury Strip Coupon 1.82%Vertiv Holdings Co 1.23%
United States Treasury Strip Principal 1.76%Western Digital Corp 1.07%
United States Treasury Strip Coupon 1.72%Seagate Technology Holdings PLC 1.05%
United States Treasury Strip Principal 1.70%Quanta Services Inc 1.05%
United States Treasury Strip Coupon 1.68%Howmet Aerospace Inc 1.04%
United States Treasury Strip Principal 1.65%Cummins Inc 0.95%
United States Treasury Strip Coupon 1.60%Datadog Inc 0.84%
United States Treasury Strip Principal 1.57%Bloom Energy Corp 0.79%

Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings dated Jun 30, 2026 and May 31, 2026.

EDV and VO on the fields both publish, as of Sep 12, 2026. Source: ETFIQ.
EDV
Vanguard Extended Duration Treasury Index Fund
VO
Vanguard Mid-Cap Index Fund
Where it sitsCore index fundCore index fund
IssuerVanguardVanguard
What it isExtended Duration TreasuryMid-Cap
Total return, 1 year−10.8%+12.0%
S&P 500 over the same days+17.5%+17.5%
Gap to the S&P 500−28.3 pts−5.5 pts
Expense ratio0.05%0.03%
Holdings82282

EDV in plain words

EDV is a bond fund tracking the Extended Duration Treasury. Over the year to Sep 11, 2026 it returned −10.8% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.05% a year. It sat 57.3% below its high of Mar 9, 2020 on Sep 11, 2026.

VO in plain words

VO is an index equity fund tracking the Mid-Cap. Over the year to Sep 11, 2026 it returned +12.0% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.03% a year. By its holdings filed for Jun 30, 2026, 91% of the fund by weight is stocks the S&P 500 also holds, across 282 positions, with the top ten at 9.6%. It sat 4.1% below its high of Aug 14, 2026 on Sep 11, 2026.

Questions people ask

Which returned more over the last year, EDV or VO?
In the year to Sep 12, 2026, with distributions reinvested, EDV returned −10.8% and VO returned +12.0%, so VO returned more. One year is one year; the longer windows are in the table.
Which is cheaper, EDV or VO?
EDV charges 0.05% a year and VO charges 0.03%, so VO is cheaper. Fees come from each fund's prospectus.

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Where these figures came from

ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.

EDV against VO, ETFIQ, data as of Sep 12, 2026. Every figure is arithmetic on a named public source; the method is at etfiq.com/methodology. A comparison is not a recommendation.

Cite this page. ETFIQ, EDV against VO, data as of Sep 12, 2026. https://etfiq.com/compare/any/EDV-VO Free to use with attribution; the underlying files are at Open data.

A comparison is not a recommendation. Standards and sources