IJR vs VFMO: 11% overlap
iShares Core S&P Small-Cap ETF 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.
Different holding dates. These holdings were published about 4 months apart — VFMO as of 2026-03-31, the rest through 2026-07-27. 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
IJR and VFMO hold 133 of the same securities. The ten contributing most to the overlap figure:
| Holding | in IJR | in VFMO | Δ |
|---|---|---|---|
| CASH | 2.0% | 1.4% | 0.6% |
| IBP | 0.3% | 0.4% | 0.1% |
| AWI | 0.4% | 0.2% | 0.2% |
| ZWS | 0.4% | 0.2% | 0.2% |
| LUMN | 0.3% | 0.2% | 0.2% |
| PTCT | 0.3% | 0.2% | 0.2% |
| LQDA | 0.3% | 0.2% | 0.2% |
| AGX | 0.4% | 0.2% | 0.2% |
| PRIM | 0.3% | 0.2% | 0.1% |
| DAN | 0.2% | 0.2% | 0.0% |
Where IJR 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 | IJR | VFMO | Δ |
|---|---|---|---|
| Financials | 19.3% | 6.3% | +13.0pp |
| Health Care | 10.5% | 22.3% | −11.8pp |
| Consumer Discretionary | 14.3% | 7.8% | +6.5pp |
| Real Estate | 6.4% | 0.1% | +6.3pp |
| Industrials | 18.5% | 24.4% | −5.9pp |
| Information Technology | 11.9% | 17.0% | −5.1pp |
| Energy | 5.2% | 7.7% | −2.5pp |
| Materials | 3.9% | 6.2% | −2.3pp |
Δ is IJR 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
72.7% of IJR by weight, held in no part of VFMO.
88.3% of VFMO by weight, held in no part of IJR.
A large count with a small weight is the usual shape: the positions one fund adds are typically its smallest ones.
Concentration and cost
| IJR | VFMO | |
|---|---|---|
| Top 10 holdings | 6.4% | 10.2% |
| Positions held | 603 | 672 |
| Cost per $10,000 held, per year | $6 | $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 IJR and VFMO overlap?
IJR and VFMO overlap 11.2% by portfolio weight — largely distinct portfolios. They share 133 holdings. The figure comes from current issuer holdings files (IJR as of 2026-07-27, VFMO as of 2026-03-31).
How is the overlap between IJR and VFMO calculated?
As the sum of the smaller weight in each fund, over every holding both funds own: Σ min(wA, wB). If IJR 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 IJR 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 IJR own that VFMO doesn't?
IJR holds 603 positions and VFMO holds 672; 469 of IJR's positions don't appear in VFMO at all, and they are 72.7% of IJR by weight.
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Related comparisons
Sources: issuer holdings files, IJR as of 2026-07-27, VFMO as of 2026-03-31. Weights are fractions of each fund. Diagnostics, not advice.