VFMO vs VO: 15% overlap
Vanguard U.S. Momentum Factor ETF and Vanguard Mid-Cap ETF share 14.6% of their portfolios by weight — computed as Σ min(wA, wB) over every holding both funds own.
Different holding dates. These holdings were published about 3 months apart — VFMO as of 2026-03-31, the rest through 2026-06-30. Each fund is compared using its most recent file, so any trading in between shows up as a difference.
You would hold two tickers and get the diversification of 1.9. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
VFMO and VO hold 68 of the same securities. The ten contributing most to the overlap figure:
| Holding | in VFMO | in VO | Δ |
|---|---|---|---|
| VRT | 0.9% | 1.2% | 0.3% |
| HWM | 0.9% | 1.0% | 0.2% |
| GM | 0.8% | 0.7% | 0.2% |
| SLB | 0.6% | 0.7% | 0.1% |
| CMI | 0.6% | 1.0% | 0.4% |
| PWR | 0.5% | 1.0% | 0.5% |
| COR | 0.6% | 0.5% | 0.1% |
| CASH | 1.4% | 0.5% | 0.9% |
| NEM | 1.0% | 0.5% | 0.5% |
| MPC | 0.5% | 0.7% | 0.3% |
Where VFMO and VO differ
Sector weights as a share of each fund, ordered by the size of the gap rather than the size of the sector — two funds that overlap heavily still usually diverge somewhere.
| Sector | VFMO | VO | Δ |
|---|---|---|---|
| Health Care | 22.3% | 7.8% | +14.5pp |
| Utilities | 0.0% | 8.4% | −8.3pp |
| Financials | 6.3% | 14.0% | −7.7pp |
| Real Estate | 0.1% | 5.1% | −5.0pp |
| Industrials | 24.4% | 19.6% | +4.9pp |
| Consumer Staples | 2.4% | 4.9% | −2.4pp |
| Materials | 6.2% | 4.3% | +1.9pp |
| Consumer Discretionary | 7.8% | 8.9% | −1.1pp |
Δ is VFMO minus VO, in percentage points. Sector data is not published by every issuer, so “Unclassified” is a real category rather than a gap in the table.
What each fund holds alone
83.2% of VFMO by weight, held in no part of VO.
68.8% of VO by weight, held in no part of VFMO.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| VFMO | VO | |
|---|---|---|
| Top 10 holdings | 10.2% | 9.5% |
| Positions held | 672 | 283 |
| Cost per $10,000 held, per year | $13 | $3 |
Cost is the expense ratio applied to $10,000; it excludes any brokerage commission, bid-ask spread or tax consequence. Figures are facts about the funds, not a suggestion about which to hold.
Frequently asked
How much do VFMO and VO overlap?
VFMO and VO overlap 14.6% by portfolio weight — largely distinct portfolios. They share 68 holdings. The figure comes from current issuer holdings files (VFMO as of 2026-03-31, VO as of 2026-06-30).
How is the overlap between VFMO and VO calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If VFMO holds a stock at 6% and VO holds the same stock at 4%, 4% counts as shared. The result is bounded between 0% and 100%, and it is computed after looking through any fund-of-funds to the underlying holdings.
Is it redundant to hold both VFMO and VO?
That depends on your goals — we state facts, not advice. At 14.6% overlap, each fund still contributes meaningfully distinct exposure.
What does VFMO own that VO doesn't?
VFMO holds 672 positions and VO holds 283; 604 of VFMO's positions don't appear in VO at all, and they are 83.2% of VFMO by weight.
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Related comparisons
Sources: issuer holdings files, VFMO as of 2026-03-31, VO as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.