The Dow Jones Industrial Average reached a milestone of 30000. WSJ’s Jason Bellini explains how we got here and what the 30000 figure tells us about the state of the stock market. Photo illustration: Laura Kammermann More from the Wall Street Journal: Visit WSJ.com: http://www.wsj.com Visit the WSJ Video Center: https://wsj.com/video On Facebook: https://www.facebook.com/pg/wsj/videos/ On Twitter: https://twitter.com/WSJ On Snapchat: https://on.wsj.com/2ratjSM #WSJ #Dow30K #DJIA