ABALX vs VTIAX: 5% overlap
American Funds American Balanced A and Vanguard Total International Stock Index Admiral share 5.0% 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 — ABALX 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 2.0. Two funds that shared nothing would score 2.0; two identical funds score 1.0.
Top shared holdings
ABALX and VTIAX hold 37 of the same securities. The ten contributing most to the overlap figure:
| Holding | in ABALX | in VTIAX | Δ |
|---|---|---|---|
| 000660 | 0.7% | 2.2% | 1.4% |
| ASML | 0.5% | 1.7% | 1.2% |
| NESN | 0.4% | 0.6% | 0.2% |
| 2330 | 0.4% | 4.3% | 3.9% |
| BN | 0.4% | 0.3% | 0.1% |
| SHEL | 0.3% | 0.5% | 0.2% |
| BATS | 0.2% | 0.3% | 0.0% |
| AZN | 0.2% | 0.6% | 0.4% |
| DTE | 0.3% | 0.2% | 0.0% |
| CNQ | 1.0% | 0.2% | 0.8% |
Where ABALX and VTIAX 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 | ABALX | VTIAX | Δ |
|---|---|---|---|
| Unclassified | 22.7% | 9.1% | +13.6pp |
| Treasuries | 12.3% | 0.0% | +12.3pp |
| Financials | 8.9% | 19.7% | −10.8pp |
| Industrials | 6.0% | 13.8% | −7.9pp |
| Information Technology | 16.0% | 20.9% | −4.9pp |
| Corporate — industrial & other | 3.6% | 0.0% | +3.6pp |
| Materials | 1.9% | 5.2% | −3.3pp |
| MBS Pass-Through | 2.7% | 0.0% | +2.7pp |
Δ is ABALX minus VTIAX, 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
92.0% of ABALX by weight, held in no part of VTIAX.
84.1% of VTIAX by weight, held in no part of ABALX.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| ABALX | VTIAX | |
|---|---|---|
| Top 10 holdings | 36.3% | 16.3% |
| Positions held | 1,439 | 8,453 |
| Cost per $10,000 held, per year | $56 | $9 |
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 ABALX and VTIAX overlap?
ABALX and VTIAX overlap 5.0% by portfolio weight — largely distinct portfolios. They share 37 holdings. The figure comes from current issuer holdings files (ABALX as of 2026-03-31, VTIAX as of 2026-06-30).
How is the overlap between ABALX and VTIAX calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If ABALX holds a stock at 6% and VTIAX 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 ABALX and VTIAX?
That depends on your goals — we state facts, not advice. At 5.0% overlap, each fund still contributes meaningfully distinct exposure.
What does ABALX own that VTIAX doesn't?
ABALX holds 1,439 positions and VTIAX holds 8,453; 1,401 of ABALX's positions don't appear in VTIAX at all, and they are 92.0% of ABALX by weight.
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Related comparisons
Sources: issuer holdings files, ABALX as of 2026-03-31, VTIAX as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.