Artnet is keeping tabs on who sold what during 2013. Here are their tallies for the top 10 artists in the first half of 2013, by value sold at auction:

1. Pablo Picasso (Q1–Q2 2013 sales: US$226.1 M)
2. Zhang Daqian (US$180.3 M)
3. Jean-Michel Basquiat (US$169.2 M)
4. Qi Baishi (US$138 M)
5. Andy Warhol (US$137.1 M)
6. Gerhard Richter (US$123.1 M)
7. Claude Monet (US$112 M)
8. Roy Lichtenstein (US$101.5 M)
9. Amadeo Modigliani (US$91.3 M)
10. Jackson Pollock (US$79.6 M)

Q1-Q2 Auction Performance in 2013 (Artnet)