Vanguard Institutional Index Fund Institutional Plus Shares (VIIIX) NASDAQ
Currency In USD
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Currency In USD
If you invested $1000 in Vanguard Institutional Index Fund (VIIIX) 10 years ago, it would be worth $4,131.64 as of September 11, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $1,817.12, while $1000 invested 1 year ago would be worth $1,162.16. This corresponds to total returns of 313.16%, 81.71%, 16.22%, respectively, with annualized returns of 15.24%, 12.7%, 16.22%.
Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.
Date Range:
| Date | Open | Close | Adj Close | High | Low | Volume |
|---|---|---|---|---|---|---|
| September 10, 2026 | 612.39 | 612.39 | 612.39 | 612.39 | 612.39 | 0 |
| September 09, 2026 | 615.35 | 615.35 | 615.35 | 615.35 | 615.35 | 0 |
| September 08, 2026 | 618.95 | 618.95 | 618.95 | 618.95 | 618.95 | 0 |
| September 04, 2026 | 621.19 | 621.19 | 621.19 | 621.19 | 621.19 | 0 |
| September 03, 2026 | 614.64 | 614.64 | 614.64 | 614.64 | 614.64 | 0 |
| September 02, 2026 | 611.82 | 611.82 | 611.82 | 611.82 | 611.82 | 0 |
| September 01, 2026 | 616.14 | 616.14 | 616.14 | 616.14 | 616.14 | 0 |
| August 31, 2026 | 618.17 | 618.17 | 618.17 | 618.17 | 618.17 | 0 |
| August 28, 2026 | 619.69 | 619.69 | 619.69 | 619.69 | 619.69 | 0 |
| August 27, 2026 | 615.26 | 615.26 | 615.26 | 615.26 | 615.26 | 0 |
| August 26, 2026 | 615.38 | 615.38 | 615.38 | 615.38 | 615.38 | 0 |
| August 25, 2026 | 613.39 | 613.39 | 613.39 | 613.39 | 613.39 | 0 |
| August 24, 2026 | 615.1 | 615.1 | 615.1 | 615.1 | 615.1 | 0 |
| August 21, 2026 | 612.41 | 612.41 | 612.41 | 612.41 | 612.41 | 0 |
| August 20, 2026 | 617.69 | 617.69 | 617.69 | 617.69 | 617.69 | 0 |
| August 19, 2026 | 616.34 | 616.34 | 616.34 | 616.34 | 616.34 | 0 |
| August 18, 2026 | 620.6 | 620.6 | 620.6 | 620.6 | 620.6 | 0 |
| August 17, 2026 | 623.78 | 623.78 | 623.78 | 623.78 | 623.78 | 0 |
| August 14, 2026 | 624.77 | 624.77 | 624.77 | 624.77 | 624.77 | 0 |
| August 13, 2026 | 620.71 | 620.71 | 620.71 | 620.71 | 620.71 | 0 |
| August 12, 2026 | 621.04 | 619.06 | 619.06 | 621.04 | 619.06 | 0 |
| August 11, 2026 | 621.04 | 621.04 | 621.04 | 621.04 | 621.04 | 0 |
| August 10, 2026 | 621.34 | 621.34 | 621.34 | 621.34 | 621.34 | 0 |
| August 07, 2026 | 617.49 | 617.49 | 617.49 | 617.49 | 617.49 | 0 |
| August 06, 2026 | 618.58 | 618.58 | 618.58 | 618.58 | 618.58 | 0 |
| August 05, 2026 | 619.62 | 619.62 | 619.62 | 619.62 | 619.62 | 0 |
| August 04, 2026 | 608.72 | 608.72 | 608.72 | 608.72 | 608.72 | 0 |
| August 03, 2026 | 599.81 | 599.81 | 599.81 | 599.81 | 599.81 | 0 |
| July 31, 2026 | 595.61 | 595.61 | 595.61 | 595.61 | 595.61 | 0 |
| July 30, 2026 | 585.88 | 585.88 | 585.88 | 585.88 | 585.88 | 0 |
| July 29, 2026 | 594.9 | 594.9 | 594.9 | 594.9 | 594.9 | 0 |
| July 28, 2026 | 593.64 | 593.64 | 593.64 | 593.64 | 593.64 | 0 |
| July 27, 2026 | 593.54 | 593.54 | 593.54 | 593.54 | 593.54 | 0 |
| July 23, 2026 | 600.44 | 600.44 | 600.44 | 600.44 | 600.44 | 0 |
| July 22, 2026 | 601.25 | 601.25 | 601.25 | 601.25 | 601.25 | 0 |
| July 21, 2026 | 595.97 | 595.97 | 595.97 | 595.97 | 595.97 | 0 |
| July 20, 2026 | 597.11 | 597.11 | 597.11 | 597.11 | 597.11 | 0 |
| July 17, 2026 | 603.19 | 603.19 | 603.19 | 603.19 | 603.19 | 0 |
| July 16, 2026 | 606.28 | 606.28 | 606.28 | 606.28 | 606.28 | 0 |
| July 15, 2026 | 603.94 | 603.94 | 603.94 | 603.94 | 603.94 | 0 |
| July 14, 2026 | 601.67 | 601.67 | 601.67 | 601.67 | 601.67 | 0 |
| July 13, 2026 | 606.48 | 606.48 | 606.48 | 606.48 | 606.48 | 0 |
| July 10, 2026 | 603.88 | 603.88 | 603.88 | 603.88 | 603.88 | 0 |
| July 09, 2026 | 598.98 | 598.98 | 598.98 | 598.98 | 598.98 | 0 |
| July 08, 2026 | 600.67 | 600.67 | 600.67 | 600.67 | 600.67 | 0 |
| July 07, 2026 | 603.36 | 603.36 | 603.36 | 603.36 | 603.36 | 0 |
| July 06, 2026 | 598.96 | 598.96 | 598.96 | 598.96 | 598.96 | 0 |
| July 02, 2026 | 598.94 | 598.94 | 598.94 | 598.94 | 598.94 | 0 |
| July 01, 2026 | 600.21 | 600.21 | 600.21 | 600.21 | 600.21 | 0 |
| June 30, 2026 | 595.43 | 595.43 | 595.43 | 595.43 | 595.43 | 0 |
| June 29, 2026 | 588.52 | 588.52 | 588.52 | 588.52 | 588.52 | 0 |
| June 26, 2026 | 588.78 | 588.78 | 588.78 | 588.78 | 588.78 | 0 |
| June 25, 2026 | 588.81 | 588.81 | 588.81 | 588.81 | 588.81 | 0 |
| June 24, 2026 | 591.2 | 591.2 | 591.2 | 591.2 | 591.2 | 0 |
| June 23, 2026 | 599.81 | 599.81 | 599.81 | 599.81 | 599.81 | 0 |
| June 22, 2026 | 602.01 | 602.01 | 602.01 | 602.01 | 602.01 | 0 |
| June 18, 2026 | 595.54 | 595.54 | 595.54 | 595.54 | 595.54 | 0 |
| June 17, 2026 | 602.86 | 602.86 | 602.86 | 602.86 | 602.86 | 0 |
| June 16, 2026 | 606.29 | 606.29 | 606.29 | 606.29 | 606.29 | 0 |
| June 15, 2026 | 596.29 | 596.29 | 596.29 | 596.29 | 596.29 | 0 |