Morningstar Inc.'s stock was up 1.71 points, or 9.24%, late today, the first day of trading in the investment research firm's initial public offering. The stock was trading at $20.21 a share just before the close. The share price had been as high as $20.65 a share at one point during the day.
The company announced Monday it priced the IPO of roughly 7.6 million shares at $18.50 a share. The stock trades on Nasdaq under the symbol MORN.