NEXTDC is trading at A$9.85, up 50.84%, after an investment vehicle jointly owned by Goodman Group and Digital Realty sought up to a 9.9% stake at A$9.50 per share. - NEXTDC said the after-market bookbuild occurred November 4. - Its board noted the move but said it had no takeover proposal. - Reports attributed the sharp rise to the stake purchase, with takeover speculation adding context; no separate November 6 company catalyst was identified.