LONDON (Reuters) - European shares had a choppy opening on Tuesday as a batch of first-quarter corporate results failed to set a clear trend, and chipmakers were weighed down by AMS' warning of a downturn in orders.
The pan-European STOXX 600 (STOXX) was up 0.16 percent by 0735 GMT after spending some time in negative territory as it moved towards a heavy week of earnings.
Austria-based chipmaker and Apple (NASDAQ:AAPL)
"It is reasonable to assume that this will have a negative impact on STM's Q2 guidance as well", Liberum analysts said as shares in STMicro (MI:STM) fell 2.3 percent and peer Dialog Semi (DE:DLGS) tumbled 4.1 percent.
These results come as a strong growth in ad sales for Google despite a surge in costs at its parent Alphabet (O:GOOGL) brought some relief to the sector after a ropey few months for the leading U.S. tech companies.
Germany's SAP (DE:SAPG) rose 3.5 percent after saying it was gaining ground on competitors Salesforce (N:CRM) and Oracle (N:ORCL) in the cloud and that its margin recovery was firmly on track.