shares of aaon inc aaon rallied 31 in premarket trading friday after the heating ventilation and air conditioning hvac company announced a threefortwo split of the common stock shareholders of record on july 28 will receive one extra share for each two shares they own on on aug 16 the split will effectively reduce the price of the stock by onethird while increasing the number of shares outstanding to 816 million from 544 million based on thursday’s closing price of 9229 a 3for2 split would change the price to 6153 the company had last enacted a stock split also a 3for2 in july 2014 aaon’s stock which closed at a record 10326 on may 5 has run up 655 over the past 12 months while the sp 500 spx has advanced 130