Registry rank 215 · Portfolio as of 2026-03-31
VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND
VITNX (Vanguard Institutional Total Stock Market Index Fund) · VITPX (Vanguard Institutional Total Stock Market Index Fund)
The verdict
What the numbers say
This fund holds essentially the same portfolio as Vanguard Total Stock Market Index Fund but charges $30 a year per $100,000 instead of $10 — about $1,007 more over 20 years.
Data provenance
Run 363649da-fcfb-4007-87ef-de06de7710ca; method closet-index@2.0.0; fund accession 0000862084-26-000093; comparison periods and expense-filing links appear with their figures. Machine capture time: 2026-07-29T14:22:09.616Z.
Computed rule checks
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· Rule 1
The fund’s filed benchmark and its closest approved index control point to the same comparison.
Methodology rule · visual rules si-visual-explainers@1.0.0
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· 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
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· Rule 3
Over the 20-year window from 2006-07-31 to 2026-07-29, annualized fund-minus-index tracking difference was 0.08% against a 0.03% filed fee. The annualized lag did not exceed the fee.
Computed on licensed market-return history · filed fee as of 2025-12-31
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.
| Share class and filing | 10 years | 20 years | 30 years |
|---|---|---|---|
| VITNX0.03% · SEC expense filing · as of 2025-12-31 | $310 | $1,007 | $2,456 |
| VITPX0.02% · SEC expense filing · as of 2025-12-31 | $155 | $504 | $1,230 |
Real trailing windows
Computed on licensed market-return history
Trailing windows use Vanguard Total Stock Market ETF (VTI) adjusted-close total-return history through 2026-07-29 and the same filed index-control fee baseline as the convention table. Methodology.
| Share class and filing | 10 years | 20 years | 30 years |
|---|---|---|---|
| VITNXFiled fee as of 2025-12-31 | $669Computed on licensed market-return history 2016-07-29 to 2026-07-29 · proxy return 14.39% annualized | $2,960Computed on licensed market-return history 2006-07-31 to 2026-07-29 · proxy return 11.13% annualized | Proxy history begins 2001 — no full 30-year window |
| VITPXFiled fee as of 2025-12-31 | $335Computed on licensed market-return history 2016-07-29 to 2026-07-29 · proxy return 14.39% annualized | $1,481Computed on licensed market-return history 2006-07-31 to 2026-07-29 · proxy return 11.13% annualized | Proxy history begins 2001 — no full 30-year window |
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 |
|---|---|---|---|
| VITNX | 0.08%Computed on licensed market-return history 2016-07-29 to 2026-07-29 | 0.08%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 |
| VITPX | 0.08%Computed on licensed market-return history 2016-07-29 to 2026-07-29 | 0.09%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.
Change the illustration
Computed from SEC filings
Assumptions for the dollar figures below: $100,000 starting amount; 5.0% annual return; 20 years; annual compounding; fees deducted annually; 0.01% computed index-control baseline. VITNX SEC expense filing, as of 2025-12-31. Methodology.
| Result | Amount |
|---|---|
| Ending value at baseline | $264,825 |
| Ending value at filed expense ratio | $263,818 |
| Difference attributed to fee drag | $1,007 |
This is an illustration, not a prediction or personalized advice. Returns and fees can differ. Read the research disclaimer.
Largest active differences vs the total US market
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 | total US market | Difference |
|---|---|---|---|
| Visa Inc | 0.74% | 0.80% | -0.06% |
| NVIDIA Corp | 6.45% | 6.44% | +0.00% |
| Apple Inc | 5.97% | 5.96% | +0.00% |
| Alphabet Inc | 4.80% | 4.80% | +0.00% |
| Microsoft Corp | 4.40% | 4.40% | +0.00% |
| Amazon.com Inc | 3.22% | 3.22% | +0.00% |
| Broadcom Inc | 2.35% | 2.35% | +0.00% |
| Meta Platforms Inc | 2.00% | 2.00% | +0.00% |
| Tesla Inc | 1.68% | 1.67% | +0.00% |
| Berkshire Hathaway Inc | 1.41% | 1.41% | +0.00% |
Source and verification
SEC N-PORT filing · filed 2026-05-28 · period 2026-03-31
SEC expense filing · period 2025-12-31
Cite these figures
Each snippet includes the figure’s source-event date and immutable verification URL.
Best-fit active share
Sensible Investor, “VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND — best-fit active share,” 0.2% versus the total US market, fund portfolio as of 2026-03-31; measured against the filed holdings of Vanguard Total Stock Market ETF (VTI), as of 2026-03-31. https://sensible-investor.com/registry/vitnx/as-of/363649da-fcfb-4007-87ef-de06de7710ca
VITNX filed expense ratio
Sensible Investor, “VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND — filed expense ratio,” 0.03% for VITNX, as of 2025-12-31. https://sensible-investor.com/registry/vitnx/as-of/363649da-fcfb-4007-87ef-de06de7710ca