Immutable verification record
Small Cap Index Fund
Run 363649da-fcfb-4007-87ef-de06de7710ca · portfolio period 2026-03-31 · captured 2026-07-29T14:22:09.616Z
This is the permanent record of what our July 29, 2026 data run computed for Small Cap Index Fund, and the exact SEC documents every number came from — it exists so anyone can check us.
Current interpretation · methodology 1.5
How to read this prior-run record now
At $100 a year per $100,000 (0.10%), this is the lowest-cost fund tracking the Russell 2000 index in this registry.
This interpretation is computed under the current methodology and is not inserted into the immutable record below.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
Active share by comparison index
| Index | Active share | Holdings evidence | Identifier match |
|---|---|---|---|
| the Russell 2000 index | 0.9% | measured against the filed holdings of iShares Russell 2000 ETF (IWM), as of 2026-03-31 | 100.0% |
| the S&P SmallCap 600 | 57.6% | measured against the filed holdings of iShares Core S&P Small-Cap ETF (IJR), as of 2026-03-31 | 42.4% |
| the S&P MidCap 400 | 83.0% | measured against the filed holdings of iShares Core S&P Mid-Cap ETF (IJH), as of 2026-03-31 | 18.5% |
| the total US market | 95.5% | measured against the filed holdings of Vanguard Total Stock Market ETF (VTI), as of 2026-03-31 | 95.9% |
| the S&P 500 | 100.0% | measured against the filed holdings of iShares Core S&P 500 ETF (IVV), as of 2026-03-31 | 0.5% |
| the Russell 1000 Growth index | 100.0% | measured against the filed holdings of iShares Russell 1000 Growth ETF (IWF), as of 2026-03-31 | 0.0% |
| the Russell 1000 index | 100.0% | measured against the filed holdings of iShares Russell 1000 ETF (IWB), as of 2026-03-31 | 0.0% |
| the Russell 1000 Value index | 100.0% | measured against the filed holdings of iShares Russell 1000 Value ETF (IWD), as of 2026-03-31 | 0.0% |
Filed expense ratios by share class
| Share class | Expense ratio | Filing period | SEC document |
|---|---|---|---|
| NSIDX (Small Cap Index Fund) | 0.10% | 2025-03-31 | Open SEC expense filing |
Match rates
| Fund identifier match | 100.0% |
|---|---|
| the Russell 2000 index | 100.0% |
| the S&P SmallCap 600 | 42.4% |
| the S&P MidCap 400 | 18.5% |
| the total US market | 95.9% |
| the S&P 500 | 0.5% |
| the Russell 1000 Growth index | 0.0% |
| the Russell 1000 index | 0.0% |
| the Russell 1000 Value index | 0.0% |
Fee-drag windows
No comparison is shown against the same lowest-cost control class.
Check it yourself
- Open the fund’s linked SEC holdings filing and, for fees, the linked SEC expense filing in the table above.
- Find each security identifier and portfolio weight in the holdings filing, and the net annual operating expense for the relevant share class in its expense filing.
- Recalculate the comparison using the active-share formula and portfolio rules.
Raw record (JSON)
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