AGTHX vs IJR: 0% overlap
American Funds Growth Fund of America A and iShares Core S&P Small-Cap ETF share 0.3% 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 5 months apart — AGTHX as of 2026-02-28, the rest through 2026-07-23. 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
AGTHX and IJR hold 8 of the same securities. The ten contributing most to the overlap figure:
| Holding | in AGTHX | in IJR | Δ |
|---|---|---|---|
| AIR | 0.1% | 0.3% | 0.2% |
| MC | 0.1% | 0.2% | 0.2% |
| ENR | 0.0% | 0.1% | 0.0% |
| RNG | 0.0% | 0.2% | 0.1% |
| CZR | 0.0% | 0.3% | 0.3% |
| TRUP | 0.0% | 0.0% | 0.0% |
| WSC | 0.0% | 0.3% | 0.3% |
| MRP | 0.0% | 0.2% | 0.2% |
Where AGTHX and IJR 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 | AGTHX | IJR | Δ |
|---|---|---|---|
| Information Technology | 30.6% | 12.1% | +18.4pp |
| Financials | 6.5% | 17.8% | −11.3pp |
| Communication Services | 13.2% | 3.6% | +9.6pp |
| Industrials | 9.8% | 18.5% | −8.7pp |
| Unclassified | 7.6% | 0.0% | +7.6pp |
| Real Estate | 0.6% | 6.2% | −5.6pp |
| Energy | 1.9% | 5.3% | −3.4pp |
| Materials | 1.5% | 3.9% | −2.3pp |
Δ is AGTHX minus IJR, 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
98.6% of AGTHX by weight, held in no part of IJR.
98.2% of IJR by weight, held in no part of AGTHX.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| AGTHX | IJR | |
|---|---|---|
| Top 10 holdings | 36.7% | 6.6% |
| Positions held | 309 | 603 |
| Cost per $10,000 held, per year | $61 | $6 |
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 AGTHX and IJR overlap?
AGTHX and IJR overlap 0.3% by portfolio weight — largely distinct portfolios. They share 8 holdings. The figure comes from current issuer holdings files (AGTHX as of 2026-02-28, IJR as of 2026-07-23).
How is the overlap between AGTHX and IJR calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If AGTHX holds a stock at 6% and IJR 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 AGTHX and IJR?
That depends on your goals — we state facts, not advice. At 0.3% overlap, each fund still contributes meaningfully distinct exposure.
What does AGTHX own that IJR doesn't?
AGTHX holds 309 positions and IJR holds 603; 300 of AGTHX's positions don't appear in IJR at all, and they are 98.6% of AGTHX by weight.
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Related comparisons
Sources: issuer holdings files, AGTHX as of 2026-02-28, IJR as of 2026-07-23. Weights are fractions of each fund. Diagnostics, not advice.