VFMO vs VTWNX: 9% overlap
Vanguard U.S. Momentum Factor ETF and Vanguard Target Retirement 2020 share 9.1% 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, VTWNX 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 VTWNX hold 629 of the same securities. The ten contributing most to the overlap figure:
| Holding | in VFMO | in VTWNX | Δ |
|---|---|---|---|
| CASH | 1.4% | 1.7% | 0.3% |
| GOOGL | 0.9% | 0.6% | 0.3% |
| AVGO | 0.6% | 0.5% | 0.1% |
| GOOG | 0.6% | 0.5% | 0.1% |
| MU | 0.8% | 0.4% | 0.4% |
| TSLA | 0.4% | 0.3% | 0.1% |
| LLY | 0.5% | 0.3% | 0.2% |
| AMD | 1.0% | 0.3% | 0.7% |
| JPM | 0.2% | 0.2% | 0.0% |
| JNJ | 1.0% | 0.2% | 0.8% |
Where VFMO and VTWNX 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 | VTWNX | Δ |
|---|---|---|---|
| Unclassified | 0.9% | 29.7% | −28.9pp |
| Industrials | 24.4% | 4.0% | +20.4pp |
| Health Care | 22.3% | 2.7% | +19.6pp |
| Treasuries | 0.0% | 17.1% | −17.1pp |
| MBS Pass-Through | 0.0% | 7.2% | −7.2pp |
| Information Technology | 17.0% | 10.0% | +7.0pp |
| Energy | 7.7% | 1.1% | +6.6pp |
| Corporate — industrial & other | 0.0% | 5.5% | −5.5pp |
Δ is VFMO minus VTWNX, 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
5.3% of VFMO by weight, held in no part of VTWNX.
90.4% of VTWNX 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 | VTWNX | |
|---|---|---|
| Top 10 holdings | 10.2% | 44.9% |
| Positions held | 672 | 7 |
| Cost per $10,000 held, per year | $13 | $8 |
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 VTWNX overlap?
VFMO and VTWNX overlap 9.1% by portfolio weight — largely distinct portfolios. They share 629 holdings. The figure comes from current issuer holdings files (VFMO as of 2026-03-31, VTWNX as of 2026-03-31).
How is the overlap between VFMO and VTWNX 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 VTWNX 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 VTWNX?
That depends on your goals — we state facts, not advice. At 9.1% overlap, each fund still contributes meaningfully distinct exposure.
What does VFMO own that VTWNX doesn't?
VFMO holds 672 positions and VTWNX holds 7; 43 of VFMO's positions don't appear in VTWNX at all, and they are 5.3% of VFMO by weight.
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Related comparisons
Sources: issuer holdings files, VFMO as of 2026-03-31, VTWNX as of 2026-03-31. Weights are fractions of each fund. Diagnostics, not advice.