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Vanguard Institutional Index Fund Institutional (VIIIX)

[[ item.lastPrice ]] [[ item.priceChange ]] ([[ item.percentChange ]]) [[ item.tradeTime ]] [FUND]
[[ rootItem.symbol ]]underlying price [[ rootItem.lastPrice ]] [[ rootItem.priceChange ]] ([[ rootItem.percentChange ]]) [[ rootItem.tradeTime ]]
Performance Report for [[ item.sessionDateDisplayLong ]]
[[ chartTitle ]]

Price Performance

Price History
Period Period Low Period High Performance
5-Day
552.04 +1.11%
on 02/13/26
558.15 unch
on 02/20/26
+6.46 (+1.17%)
since 02/12/26
1-Month
548.75 +1.71%
on 02/05/26
563.21 -0.90%
on 01/27/26
+9.67 (+1.76%)
since 01/20/26
3-Month
531.82 +4.95%
on 11/21/25
563.21 -0.90%
on 01/27/26
+31.54 (+5.99%)
since 11/20/25
6-Month
511.52 +9.12%
on 08/21/25
563.21 -0.90%
on 01/27/26
+44.65 (+8.69%)
since 08/20/25
YTD
548.48 +1.76%
on 01/20/26
563.21 -0.90%
on 01/27/26
+6.08 (+1.10%)
since 12/31/25
52-Week
398.21 +40.17%
on 04/08/25
563.21 -0.90%
on 01/27/26
+70.12 (+14.37%)
since 02/20/25
2-Year
391.95 +42.40%
on 04/19/24
563.21 -0.90%
on 01/27/26
+166.41 (+42.48%)
since 02/20/24
3-Year
299.02 +86.66%
on 03/13/23
563.21 -0.90%
on 01/26/26
+250.46 (+81.40%)
since 02/20/23
5-Year
275.51 +102.59%
on 10/10/22
563.21 -0.90%
on 01/26/26
+271.51 (+94.72%)
since 02/22/21
10-Year
138.32 +300.73%
on 03/01/16
563.21 -1.58%
on 01/01/26
+419.20 (+310.30%)
since 02/01/16
20-Year
41.13 +1,247.81%
on 03/01/09
563.21 -1.58%
on 01/01/26
+481.44 (+660.92%)
since 02/01/06

52-Week Key Points

52-Wk Low
398.21
52-Wk High
563.21
52-Week High 563.21
Last Price 558.15
Fibonacci 61.8% 500.18
Fibonacci 50% 480.71
Fibonacci 38.2% 461.24
52-Week Low 398.21

See More

VIIIX Daily Price Range

Day Low
558.15
Day High
558.15
Last Price: 558.15
Daily Closing Range: 0.00%
Close to Close %Change: +0.70%
Close to Open %Change: unch
High to Low %Change: unch
Open to Previous %Change: +0.70%
Gap Up Today %Change +0.70%

New Highs

Period
Made
New high
Percent
From Last
5-Day 4 times unch
1-Month 5 times -0.90%
3-Month 16 times -0.90%
6-Month 28 times -0.90%
YTD 6 times -0.90%
52-Week 51 times -0.90%
2-Year 99 times -0.90%
3-Year 78 times -0.90%
5-Year 90 times -0.90%
10-Year 69 times -1.58%
20-Year 112 times -1.58%

New Lows

Period
Made
New low
Percent
From Last
5-Day 1 time +1.11%
1-Month 2 times +1.71%
3-Month 1 time +4.95%
6-Month 1 time +9.12%
YTD 2 times +1.76%
52-Week 14 times +40.17%
2-Year 2 times +42.40%
3-Year 3 times +86.66%
5-Year 4 times +102.59%
10-Year 1 time +300.73%
20-Year 8 times +1,247.81%
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