Fun art market statistic to mull over when thinking about it from an investment stand point:
The 100 most expensive pieces of art work re-sold at approximately $3 billion. While thats a gigantic number it equates to only .00025% of all the art market transactions between auctions, gallery sales, and art fair sales. That $3 billion number though is half of 1% .5% of the entire art market. The artists are also almost entirely dominated by USA, Europe, Russia, and China. Yayoi Kusama is one of the biggest outliers who helps to skew the market a little bit in terms of diversity.