Benzinga’s Top Pre-Market Losers (AIXG, HAUP, ATPG, SOLF, CENX)

Aixtron Aktiengesellschaft AIXG tumbled 11.48% to $24.53 in the pre-market session. Analysts at JP Morgan Cazenove downgraded AIXG from “overweight” to “neutral.” Hauppauge Digital Inc HAUP lost 8.00% to $2.99 in the pre-market session. HAUP had narrowed its fiscal Q2 loss due to improved sales of its equipment. ATP Oil & Gas Corporation ATPG fell 7.86% to $11.60 in the pre-market session. ATPG acquires, develops and undertakes production of oil and natural gas at properties in the Gulf of Mexico, the UK and the Dutch Sectors of the North Sea. Solarfun Power Holdings Co Ltd SOLF slipped 7.33% to $5.94 in pre-market trading. SOLF is set to announce its Q1 results on May 26. Century Aluminum Company CENX slipped 6.63% to $9.15 in the pre-market. CENX produces primary aluminum in the US, Iceland and other international regions. Read more from Benzinga's Company news.