VO vs VXF: Holdings Overlap
Vanguard · 289 holdings · $109.2B · as of 2026-03-31
VXFVanguard Extended Market Index Fund
Vanguard · 3359 holdings · $32.2B · as of 2026-03-31
How similar are VO and VXF?
Vanguard Mid-cap Index Fund (VO, by Vanguard) holds 289 positions; Vanguard Extended Market Index Fund (VXF, by Vanguard) holds 3359. They have 34 holdings in common, and by portfolio weight the two funds are 7.7% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 7.7%Sum of the smaller weight of each shared holding
- Shared Holdings
- 34VO holds 289 · VXF holds 3359
- Weight in Shared Holdings
- VO 8%·VXF 12%Share of each fund's weight in stocks both funds own
Based on each fund's latest official holdings. How is this calculated?
What makes each fund different
Only in VO
255 of 289 positions (91.9% of the fund) are not held by VXF. Showing the top 30 by weight.
Sector Breakdown
| Sector | VO | VXF |
|---|---|---|
| Industrials | 18.4% | 19.5% |
| Information Technology | 14.2% | 16.3% |
| Financials | 13.8% | 15.0% |
| Health Care | 8.3% | 13.3% |
| Consumer Discretionary | 9.3% | 9.8% |
| Other Sectors | 35.7% | 23.6% |
| Unclassified | 0.0% | 2.4% |
Share of each fund's portfolio weight by GICS-style sector, compiled from issuer fund data and our own classification of the holdings, not the issuers' published sector charts. “Unclassified” is weight we could not classify (0% of VO, 2% of VXF).
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| VO | +2.6% | +14.8% | +18.0% | +15.7% | +8.0% | +11.6% | 1.29% |
| VXF | +2.4% | +18.9% | +26.9% | +18.6% | +6.9% | +12.0% | 0.99% |
Total returns including dividends, from adjusted daily closes as of 2026-08-07. 3Y/5Y/10Y are annualized. Yield is trailing-12-month distributions over the last close. Past performance does not predict future results.
Project the growth of $10,000 in VO vs VXF →
Shared Holdings(34)
The top 10 shared positions account for 57% of the overlap, led by NET, LNG and FERG.
 NETCloudflare, Inc., Class A | 0.68% | 0.90% | 0.68% |
|---|---|---|---|
 LNGCheniere Energy Inc COM NEW | 0.62% | 0.84% | 0.62% |
 FERGFerguson Enterprises Inc COMMON STOCK NEW | 0.50% | 0.62% | 0.50% |
 ALNYAlnylam Pharmaceuticals Inc. COM | 0.48% | 0.60% | 0.48% |
 MRVLMarvell Technology Inc COM | 0.47% | 1.18% | 0.47% |
 MSTRStrategy, Inc., Class A | 0.43% | 0.54% | 0.43% |
 RBLXRoblox Corporation CL A | 0.39% | 0.51% | 0.39% |
 VEEVVeeva Systems, Inc., Class A | 0.28% | 0.36% | 0.28% |
 SNOWSnowflake, Inc., Class A | 0.27% | 0.71% | 0.27% |
 LPLALPL Financial Holdings Inc. COM | 0.26% | 0.33% | 0.26% |
 MKLMarkel Group Inc COM | 0.25% | 0.33% | 0.25% |
 CRWVCoreWeave, Inc., Class A | 0.24% | 0.26% | 0.24% |
 ZMZoom Communications, Inc., Class A | 0.22% | 0.29% | 0.22% |
 MDBMongoDB, Inc., Class A | 0.21% | 0.27% | 0.21% |
 RKLBRocket Lab Corp. COM | 0.20% | 0.41% | 0.20% |
 BEBloom Energy Corporation COM CL A | 0.20% | 0.48% | 0.20% |
 RDDTReddit, Inc., Class A | 0.19% | 0.24% | 0.19% |
 INSMInsmed Inc COM PAR $.01 | 0.19% | 0.48% | 0.19% |
 HEI-AHEICO Corp., Class A | 0.17% | 0.21% | 0.17% |
 MDLNMedline, Inc., Class A | 0.16% | 0.20% | 0.16% |
 ZSZscaler Inc COM | 0.16% | 0.20% | 0.16% |
 FLUTFlutter Entertainment PLC ORD EUR0.09 (DI) | 0.16% | 0.24% | 0.16% |
 SSNCSS&C Technologies Holdings Inc. COM | 0.15% | 0.19% | 0.15% |
 TWTradeweb Markets, Inc., Class A | 0.15% | 0.19% | 0.15% |
 RKTRocket Companies Inc COM CL A | 0.14% | 0.19% | 0.14% |
Frequently Asked Questions
How much do VO and VXF overlap?
VO and VXF overlap by 7.7% of portfolio weight. They share 34 holdings (VO holds 289 positions and VXF holds 3359), based on each fund's latest SEC-reported holdings.
Is it redundant to own both VO and VXF?
The two portfolios are 7.7% identical by weight. Owning both is not redundant. Most of each portfolio is distinct, so the funds can serve different roles.
What are the biggest shared holdings of VO and VXF?
The largest positions held by both funds are NET, LNG, FERG, ALNY and MRVL. Together the top 10 shared positions account for 57% of the total overlap.
What does VO own that VXF doesn't?
255 positions (91.9% of VO) are unique to VO, led by VRT, HWM and WDC. In the other direction, 3325 positions (87.7% of VXF) are unique to VXF.