Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
RSP vs VO: how they differ
RSP and VO hold 46% of their weight in the same names, and RSP returned more over the year.
Invesco S&P 500 Equal Weight ETF and Vanguard Mid-Cap Index Fund.
What they hold in common
By the books each fund has filed, RSP and VO hold 46% of their money in the same securities at the same weight.
| Holding | RSP | VO |
|---|---|---|
| Seagate Technology Holdings PLC | 0.34% | 1.05% |
| ON Semiconductor Corp. | 0.33% | 0.36% |
| Western Digital Corp. | 0.31% | 1.07% |
| Ciena Corp. | 0.30% | 0.67% |
| Monolithic Power Systems, Inc. | 0.29% | 0.63% |
| Microchip Technology Inc. | 0.27% | 0.48% |
| Humana Inc. | 0.27% | 0.46% |
| Hewlett Packard Enterprise Co. | 0.26% | 0.58% |
| Lumentum Holdings Inc. | 0.26% | 0.65% |
| Nucor Corp. | 0.25% | 0.49% |
| Comfort Systems USA, Inc. | 0.25% | 0.68% |
| Quanta Services, Inc. | 0.25% | 1.05% |
| Only in RSP | Only in VO |
|---|---|
| Intel Corp. 0.38% | Bloom Energy Corp 0.79% |
| Advanced Micro Devices, Inc. 0.33% | Cloudflare Inc 0.76% |
| Sandisk Corp. 0.32% | Rocket Lab Corp 0.57% |
| NXP Semiconductors N.V. 0.28% | Cheniere Energy Inc 0.49% |
| Dell Technologies Inc. 0.27% | Ferguson Enterprises Inc 0.45% |
| Texas Instruments Inc. 0.27% | Waste Connections Inc 0.41% |
| QUALCOMM Inc. 0.26% | Snowflake Inc 0.41% |
| Jabil Inc. 0.26% | Alnylam Pharmaceuticals Inc 0.39% |
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 Apr 30, 2026 and Jun 30, 2026.
| RSP Invesco S&P 500 Equal Weight ETF | VO Vanguard Mid-Cap Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | Invesco | Vanguard |
| What it is | S&P 500 equal weight | Mid-Cap |
| Total return, 1 year | +14.8% | +12.0% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −2.7 pts | −5.5 pts |
| Expense ratio | 0.20% | 0.03% |
| Already in the S&P 500 | 99.1% | 91.4% |
| Holdings | 503 | 282 |
RSP in plain words
RSP is an index equity fund tracking the S&P 500 equal weight. Over the year to Sep 11, 2026 it returned +14.8% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.20% a year. By its holdings filed for Apr 30, 2026, 99% of the fund by weight is stocks the S&P 500 also holds, across 503 positions, with the top ten at 3.2%. It sat 3.5% below its high of Aug 14, 2026 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, RSP or VO?
- In the year to Sep 12, 2026, with distributions reinvested, RSP returned +14.8% and VO returned +12.0%, so RSP returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, RSP or VO?
- RSP charges 0.20% a year and VO charges 0.03%, so VO is cheaper. Fees come from each fund's prospectus.
- How much do RSP and VO overlap with the S&P 500?
- By their latest filed holdings, 99% of RSP and 91% of VO by weight is stocks the S&P 500 already holds. Between the two funds, 46% of their books are the same securities at the same weight.
Other comparisons
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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.
Cite this page. ETFIQ, RSP against VO, data as of Sep 12, 2026. https://etfiq.com/compare/any/RSP-VO Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources