AIVSX vs VFMO: 11% overlap
American Funds Investment Company of America A and Vanguard U.S. Momentum Factor ETF share 11.2% of their portfolios by weight — computed as Σ min(wA, wB) over every holding both funds own.
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
AIVSX and VFMO hold 42 of the same securities. The ten contributing most to the overlap figure:
| Holding | in AIVSX | in VFMO | Δ |
|---|---|---|---|
| GOOGL | 2.5% | 0.9% | 1.6% |
| AMAT | 1.3% | 0.9% | 0.4% |
| INTC | 0.7% | 0.8% | 0.1% |
| RTX | 1.5% | 0.6% | 0.8% |
| AVGO | 6.1% | 0.6% | 5.5% |
| GE | 2.2% | 0.6% | 1.6% |
| GOOG | 2.1% | 0.6% | 1.6% |
| GLW | 0.5% | 0.8% | 0.4% |
| LLY | 3.4% | 0.5% | 2.9% |
| GD | 0.5% | 0.5% | 0.0% |
Where AIVSX and VFMO 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 | AIVSX | VFMO | Δ |
|---|---|---|---|
| Industrials | 11.8% | 24.4% | −12.6pp |
| Information Technology | 29.2% | 17.0% | +12.2pp |
| Health Care | 11.2% | 22.3% | −11.1pp |
| Communication Services | 9.9% | 3.4% | +6.5pp |
| Energy | 1.9% | 7.7% | −5.8pp |
| Unclassified | 5.5% | 0.9% | +4.6pp |
| Consumer Staples | 6.4% | 2.4% | +3.9pp |
| Materials | 3.1% | 6.2% | −3.1pp |
Δ is AIVSX minus VFMO, 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
69.2% of AIVSX by weight, held in no part of VFMO.
80.3% of VFMO by weight, held in no part of AIVSX.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| AIVSX | VFMO | |
|---|---|---|
| Top 10 holdings | 39.5% | 10.2% |
| Positions held | 168 | 672 |
| Cost per $10,000 held, per year | $58 | $13 |
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 AIVSX and VFMO overlap?
AIVSX and VFMO overlap 11.2% by portfolio weight — largely distinct portfolios. They share 42 holdings. The figure comes from current issuer holdings files (AIVSX as of 2026-03-31, VFMO as of 2026-03-31).
How is the overlap between AIVSX and VFMO calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If AIVSX holds a stock at 6% and VFMO 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 AIVSX and VFMO?
That depends on your goals — we state facts, not advice. At 11.2% overlap, each fund still contributes meaningfully distinct exposure.
What does AIVSX own that VFMO doesn't?
AIVSX holds 168 positions and VFMO holds 672; 126 of AIVSX's positions don't appear in VFMO at all, and they are 69.2% of AIVSX by weight.
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Related comparisons
Sources: issuer holdings files, AIVSX as of 2026-03-31, VFMO as of 2026-03-31. Weights are fractions of each fund. Diagnostics, not advice.