** Shares in Adva Optical Networking ADAG.DE drop more
than 6% in early Frankfurt trade ADAG.F after the German
telecommunications equipment company warns of supply chain
shortages due to the coronavirus outbreak in China
** Adva said late on Tuesday that it believes the
coronavirus impact will most likely lead to a negative pro forma
operating income margin for Q1 urn:newsml:reuters.com:*:nASN00033H
** For the full year 2020, though, it expects the pro forma
operating income to grow and to exceed 5% of revenues
** It also reported Q4 pro forma operating income grew to
EUR 10.3 mln (6.8% of revenues) from EUR 8.1 mln (6.2% of
revenues) a year earlier
((joanna.jonczyk@tr.com))