Also if you take a look at the picture I have here, where I researched PrimeCap Admiral fund you can see they pay a yearly Dividend of about 1.20% but their value drop by 4-5% of their value. So realistically you are losing about 3% by holding on to the fund on the day before dividends are paid and a few days after.
12/16/13 and 12/19/14 are the days dividends were paid btw. Then it dips by alot.
This happened from all the years I checked. From 2013,2014,2015, 2016. You are better off selling it on the day before dividends are paid basically and buy cheap a few days later.