From time to time I look at them : http://finance.yahoo.com/q/hp?s=^DJI it almost guest the low : 10,259.35 on 14th April whereas it was made 10250 ... on 21th April Really I wonder what they use to generate such non-sense: not one single quote is exact ! Do you realise that they really need an algorithm to do that Date Open High Low Close Volume Adj Close* 23-Apr-04 10,463.11 10,543.95 10,362.97 10,472.84 13,961,000 10,472.84 22-Apr-04 10,314.99 10,529.12 10,255.88 10,461.20 18,267,000 10,461.20 21-Apr-04 10,311.87 10,398.53 10,200.38 10,317.27 17,381,000 10,317.27 20-Apr-04 10,437.85 10,530.61 10,297.39 10,314.50 15,085,000 10,314.50 19-Apr-04 10,451.62 10,501.79 10,351.97 10,437.85 11,949,000 10,437.85 16-Apr-04 10,398.32 10,500.57 10,343.74 10,451.97 14,878,000 10,451.97 15-Apr-04 10,377.95 10,481.21 10,279.37 10,397.46 15,687,000 10,397.46 14-Apr-04 10,378.10 10,453.39 [10,259.35] 10,377.95 15,477,000 10,377.95 13-Apr-04 10,516.05 10,572.13 10,343.17 10,381.28 14,232,000 10,381.28 12-Apr-04 10,444.38 10,559.28 10,439.27 10,515.56 11,024,000 10,515.56 8-Apr-04 10,482.77 10,590.15 10,383.84 10,442.03 11,998,000 10,442.03 7-Apr-04 10,569.26 10,580.51 10,422.74 10,480.15 14,588,000 10,480.15