** Optical solutions provider POET Technologies' shares POET.O tumble 47.7% to $7.95 - on track to log biggest one-day fall on record
** Co announces cancellation of all purchase orders previously received from Celestial AI
** Marvell Technology MRVL.O, which acquired Celestial AI in December 2025, delivered written notice of the cancellation to POET
** MRVL cites disclosing confidential information related to the purchase order and shipping details, violating its confidentiality obligations
** Including session's moves, stock up 23.4% YTD
(Reporting by Ragini Mathur in Bengaluru)
((Ragini.Mathur@thomsonreuters.com;))