** Bermudian specialty insurer Aspen Insurance's AHL.N shares rise ~3% to $33.46
** AHL returned to the New York Stock Exchange on Thursday after more than six years
** The stock closed up 8.3% at $32.50 on Thursday after rising as high as $34 in its NYSE return
** Parent Apollo Global APO.N sold 13.25 million shares in Aspen's upsized IPO to raise $397.5 million at $30 apiece
** Apollo will own about 84.3% of Aspen following the offering, according to an SEC filing
** Underwriters have a 30-day option to buy up to an additional 1,987,500 AHL ordinary shares
** Aspen previously traded on the NYSE from 2003 until 2019, when Apollo acquired it for $2.6 billion
(Reporting by Arasu Kannagi Basil in Bengaluru)
((ArasuKannagi.Basil@thomsonreuters.com;))