Registry rank 2483 · Portfolio as of 2026-03-31
Small Cap Index Fund
NSIDX (Small Cap Index Fund)
The verdict
What the numbers say
At $100 a year per $100,000 (0.10%), this is the lowest-cost fund tracking the Russell 2000 index in this registry.
Data provenance
Run 363649da-fcfb-4007-87ef-de06de7710ca; method closet-index@2.0.0; fund accession 0002066578-26-001927; comparison periods and expense-filing links appear with their figures. Machine capture time: 2026-07-29T14:22:09.616Z.
Computed rule checks
1 warning · 1 check clear · 1 unavailable
Warning
· Rule 1
The fund’s filed benchmark and its closest approved index control point to different comparisons.
Methodology rule · visual rules si-visual-explainers@1.0.0
Check clear
· Rule 2
The existing same-index active-share and fee rule does not issue a closet-index warning. This is not a rating.
Methodology rule · visual rules si-visual-explainers@1.0.0
Unavailable
· Rule 3
No complete licensed window and filed headline fee are available together for this check.
Computed on licensed market-return history · filed fee as of 2025-03-31
Methodology rule · visual rules si-visual-explainers@1.0.0
Filed fees in dollars
SEC-convention illustration
Computed from SEC filings
Assumptions for each dollar figure: $100,000 starting amount · 5.0% annual return · annual compounding · fees deducted annually · 0.01% computed index-control baseline. Methodology.
This is the lowest-cost class for its index, so there is no comparison against itself.
Real trailing windows
Computed on licensed market-return history
Trailing windows use iShares Russell 2000 ETF (IWM) adjusted-close total-return history through 2026-07-29 and the same filed index-control fee baseline as the convention table. Methodology.
No trailing-window comparison is shown against the same class.
Index-control tracking difference
Annualized fund NAV return minus the matched proxy return. Positive means the fund NAV return was higher over that window.
| Fund NAV class | 10 years | 20 years | 30 years |
|---|---|---|---|
| NSIDX | no exact shared fund NAV/proxy anchors for a full 10-year window | no exact shared fund NAV/proxy anchors for a full 20-year window | no exact shared fund NAV/proxy anchors for a full 30-year window |
These figures are illustrations, not predictions or personalized advice. Returns and fees can differ. Read the research disclaimer.
Largest active differences vs the Russell 2000 index
The bars are labeled and repeated in the table; color is not the only signal. Linked company names open Buy Like Buffett’s company record; Sensible Investor does not score stocks.
| Holding | Fund | Russell 2000 index | Difference |
|---|---|---|---|
| Bread Financial Holdings, Inc. | 0.12% | 0.06% | +0.06% |
| Cushman & Wakefield Ltd. | 0.10% | 0.06% | +0.04% |
| Moelis & Co. | 0.14% | 0.12% | +0.03% |
| Pitney Bowes, Inc. | 0.06% | 0.04% | +0.02% |
| SiriusPoint Ltd. | 0.07% | 0.06% | +0.02% |
| Preferred Bank | 0.04% | 0.02% | +0.01% |
| Liberty Latin America Ltd. | 0.05% | 0.04% | +0.01% |
| Liberty Latin America Ltd. | 0.00% | 0.01% | -0.01% |
| Douglas Emmett, Inc. | 0.05% | 0.04% | +0.01% |
| Cartesian Therapeutics, Inc. | 0.01% | 0.00% | +0.01% |
Source and verification
SEC N-PORT filing · filed 2026-05-28 · period 2026-03-31
SEC expense filing · period 2025-03-31
Cite these figures
Each snippet includes the figure’s source-event date and immutable verification URL.
Best-fit active share
Sensible Investor, “Small Cap Index Fund — best-fit active share,” 0.9% versus the Russell 2000 index, fund portfolio as of 2026-03-31; measured against the filed holdings of iShares Russell 2000 ETF (IWM), as of 2026-03-31. https://sensible-investor.com/registry/nsidx/as-of/363649da-fcfb-4007-87ef-de06de7710ca
NSIDX filed expense ratio
Sensible Investor, “Small Cap Index Fund — filed expense ratio,” 0.10% for NSIDX, as of 2025-03-31. https://sensible-investor.com/registry/nsidx/as-of/363649da-fcfb-4007-87ef-de06de7710ca