Published registry · Registry rank 1934 · Portfolio as of 2026-06-30
Mid Cap Index Fund
NOMIX (Mid 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 S&P MidCap 400 in this registry.
Data provenance
Run fffcd45a-98bb-4e8e-b699-e94626fa3ab3; method closet-index@3.0.0; fund accession 0002066578-26-003178; comparison periods and expense-filing links appear with their figures. Machine capture time: 2026-09-01T09:31:36.244Z.
Computed rule checks
2 warnings · 0 checks clear · 1 check needs source inputs
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
No positive-fee index control is available
· Rule 2
The active-share, filed-fee, or same-index control input needed for this warning is unavailable.
Methodology rule · visual rules si-visual-explainers@1.0.0
Warning
· Rule 3
Over the 20-year window from 2006-07-31 to 2026-07-29, annualized fund-minus-index tracking difference was -0.11% against a 0.10% filed fee. The annualized lag was greater than the fee.
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 · published run 363649da-fcfb-4007-87ef-de06de7710ca
Trailing windows use iShares Core S&P Mid-Cap ETF (IJH) 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 |
|---|---|---|---|
| NOMIX | -0.02%Computed on licensed market-return history 2016-07-29 to 2026-07-29 | -0.11%Computed on licensed market-return history 2006-07-31 to 2026-07-29 | 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 S&P MidCap 400
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 | S&P MidCap 400 | Difference |
|---|---|---|---|
| EQUITABLE HOLDINGS INC | 0.34% | 0.33% | +0.01% |
| BANK OZK | 0.15% | 0.14% | +0.00% |
| FIDELITY NATIONAL FINANCIAL INC | 0.33% | 0.33% | +0.00% |
| KB HOME | 0.11% | 0.11% | -0.00% |
| PARSONS CORP | 0.08% | 0.08% | -0.00% |
| ASHLAND INC | 0.08% | 0.08% | -0.00% |
| HILTON GRAND VACATIONS INC | 0.09% | 0.09% | -0.00% |
| RENAISSANCERE HOLDINGS LTD | 0.37% | 0.37% | -0.00% |
| EVERCORE INC | 0.36% | 0.37% | -0.00% |
| RH INC | 0.07% | 0.07% | -0.00% |
Source and verification
SEC N-PORT filing · filed 2026-08-28 · period 2026-06-30
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, “Mid Cap Index Fund — best-fit active share,” 0.0% versus the S&P MidCap 400, fund portfolio as of 2026-06-30; measured against the filed holdings of iShares Core S&P Mid-Cap ETF (IJH), as of 2026-06-30. https://sensible-investor.com/registry/nomix/as-of/fffcd45a-98bb-4e8e-b699-e94626fa3ab3
NOMIX filed expense ratio
Sensible Investor, “Mid Cap Index Fund — filed expense ratio,” 0.10% for NOMIX, as of 2025-03-31. https://sensible-investor.com/registry/nomix/as-of/fffcd45a-98bb-4e8e-b699-e94626fa3ab3