Last Update:

Monday, April 21, 2025

Opening Value:

123.01

Highest Value:

123.01

Lowest Value:

123.01

Adj. Closing Value:

123.01

  • The forecast plot shows the forecasted Vanguard Total Stock Market Index Fund Admiral Shares stock prices for the next 12 months.

  • The plot also shows the 80% prediction interval in dark purple and the 95% prediction interval in light purple.

  • The numeric values for these forecasted values and prediction intervals are shown in the next tab.

The table below shows the forecast values and 80% and 95% prediction intervals for the 12 requested forecasts for the Vanguard Total Stock Market Index Fund Admiral Shares stock.

Point Forecast Lo 80 Hi 80 Lo 95 Hi 95
May 2025 136.0455 131.9061 140.1849 129.7149 142.3761
Jun 2025 136.6706 131.2968 142.0445 128.4521 144.8892
Jul 2025 137.2957 130.9222 143.6693 127.5483 147.0432
Aug 2025 137.9209 130.6845 145.1573 126.8537 148.9880
Sep 2025 138.5460 130.5392 146.5528 126.3006 150.7914
Oct 2025 139.1711 130.4617 147.8805 125.8513 152.4909
Nov 2025 139.7962 130.4369 149.1555 125.4824 154.1100
Dec 2025 140.4213 130.4544 150.3883 125.1782 155.6645
Jan 2026 141.0465 130.5068 151.5861 124.9275 157.1654
Feb 2026 141.6716 130.5888 152.7543 124.7219 158.6212
Mar 2026 142.2967 130.6962 153.8972 124.5553 160.0381
Apr 2026 142.9218 130.8257 155.0179 124.4225 161.4212
  • In March of 2026, the Vanguard Total Stock Market Index Fund Admiral Shares stock price is forecasted to be 142 dollars.

  • The width of the 80% prediction interval for this forecast in March of 2026 is 23 dollars.

  • These three residual plots allow the analyst to examine the distribution of the residuals of the modeled time series.

  • Despite increasing volatility, our stock price model is estimated to be 96.6% accurate.

  • This doesn’t guarantee that forecasts will be 96.6% accurate but it does improve our chances of accurate forecasting.


This dashboard was created using Quarto in RStudio, and the R Language and Environment.

The dataset used to create this dashboard was downloaded from Yahoo Finance.

Software Citations

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