** Exchange operator Miami International's MIAX.N shares rise 2.5% to $42.82
** MIAX late Thursday announced pricing of secondary offering of 6.75 million shares by certain selling shareholders at $41 apiece
** Offering priced at 1.9% discount to stock's last close
** MIAX stock slipped 6.9% on Wednesday after the secondary offering was unveiled and fell another 2% on Thursday
** J.P. Morgan, Morgan Stanley and Piper Sandler were lead joint bookrunning managers for offering
** MIAX went public in New York in August after a $345 million IPO
** Three of five brokerages rate the stock "buy" or higher and two "hold"; median PT $48 — data compiled by LSEG
** As of last close, MIAX stock up 81.7% since August debut
(Reporting by Arasu Kannagi Basil in Bengaluru)
((ArasuKannagi.Basil@thomsonreuters.com;))