Vanguard Institutional Index Fund Institutional Plus Shares (VIIIX) NASDAQ

Currency In USD

VIIIX Historical Return

If you invested $1000 in Vanguard Institutional Index Fund (VIIIX) 10 years ago, it would be worth $4,133.18 as of August 22, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $1,832.56, while $1000 invested 1 year ago would be worth $1,196.83. This corresponds to total returns of 313.32%, 83.26%, 19.68%, respectively, with annualized returns of 15.24%, 12.88%, 19.68%.

Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.

VIIIX Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low
August 21, 2026	612.41	612.41	612.41	612.41	612.41
August 20, 2026	617.69	617.69	617.69	617.69	617.69
August 19, 2026	616.34	616.34	616.34	616.34	616.34
August 18, 2026	620.6	620.6	620.6	620.6	620.6
August 17, 2026	623.78	623.78	623.78	623.78	623.78
August 14, 2026	624.77	624.77	624.77	624.77	624.77
August 13, 2026	620.71	620.71	620.71	620.71	620.71
August 12, 2026	621.04	619.06	619.06	621.04	619.06
August 11, 2026	621.04	621.04	621.04	621.04	621.04
August 10, 2026	621.34	621.34	621.34	621.34	621.34
August 07, 2026	617.49	617.49	617.49	617.49	617.49
August 06, 2026	618.58	618.58	618.58	618.58	618.58
August 05, 2026	619.62	619.62	619.62	619.62	619.62
August 04, 2026	608.72	608.72	608.72	608.72	608.72
August 03, 2026	599.81	599.81	599.81	599.81	599.81
July 31, 2026	595.61	595.61	595.61	595.61	595.61
July 30, 2026	585.88	585.88	585.88	585.88	585.88
July 29, 2026	594.9	594.9	594.9	594.9	594.9
July 28, 2026	593.64	593.64	593.64	593.64	593.64
July 27, 2026	593.54	593.54	593.54	593.54	593.54
July 23, 2026	600.44	600.44	600.44	600.44	600.44
July 22, 2026	601.25	601.25	601.25	601.25	601.25
July 21, 2026	595.97	595.97	595.97	595.97	595.97
July 20, 2026	597.11	597.11	597.11	597.11	597.11
July 17, 2026	603.19	603.19	603.19	603.19	603.19
July 16, 2026	606.28	606.28	606.28	606.28	606.28
July 15, 2026	603.94	603.94	603.94	603.94	603.94
July 14, 2026	601.67	601.67	601.67	601.67	601.67
July 13, 2026	606.48	606.48	606.48	606.48	606.48
July 10, 2026	603.88	603.88	603.88	603.88	603.88
July 09, 2026	598.98	598.98	598.98	598.98	598.98
July 08, 2026	600.67	600.67	600.67	600.67	600.67
July 07, 2026	603.36	603.36	603.36	603.36	603.36
July 06, 2026	598.96	598.96	598.96	598.96	598.96
July 02, 2026	598.94	598.94	598.94	598.94	598.94
July 01, 2026	600.21	600.21	600.21	600.21	600.21
June 30, 2026	595.43	595.43	595.43	595.43	595.43
June 29, 2026	588.52	588.52	588.52	588.52	588.52
June 26, 2026	588.78	588.78	588.78	588.78	588.78
June 25, 2026	588.81	588.81	588.81	588.81	588.81
June 24, 2026	591.2	591.2	591.2	591.2	591.2
June 23, 2026	599.81	599.81	599.81	599.81	599.81
June 22, 2026	602.01	602.01	602.01	602.01	602.01
June 18, 2026	595.54	595.54	595.54	595.54	595.54
June 17, 2026	602.86	602.86	602.86	602.86	602.86
June 16, 2026	606.29	606.29	606.29	606.29	606.29
June 15, 2026	596.29	596.29	596.29	596.29	596.29
June 12, 2026	593.28	593.28	593.28	593.28	593.28
June 11, 2026	583.06	583.06	583.06	583.06	583.06
June 10, 2026	592.65	592.65	592.65	592.65	592.65
June 09, 2026	594.16	594.16	594.16	594.16	594.16
June 08, 2026	592.37	592.37	592.37	592.37	592.37
June 05, 2026	608.38	608.38	608.38	608.38	608.38
June 04, 2026	605.81	605.81	605.81	605.81	605.81
June 03, 2026	610.3	610.3	610.3	610.3	610.3
June 02, 2026	609.49	609.49	609.49	609.49	609.49
June 01, 2026	607.85	607.85	607.85	607.85	607.85
May 29, 2026	606.5	606.5	606.5	606.5	606.5
May 28, 2026	603.02	603.02	603.02	603.02	603.02
May 27, 2026	602.92	602.92	602.92	602.92	602.92