Chartists will look back at the long-term charts and try to figure out where exactly this big Brexit panic actually occurred. Was there even such an event? There is something to be said for monthly close-only charts because they filter a lot of noise, and June was definitely a month with lots of noise. Despite some volatile swings, the major indexes ended the month with little change. Outside of the Nasdaq 100, the monthly gains and losses were between +1% and -1%. The Dow Industrials led and the Nasdaq 100 lagged.