NEW YORK (Reuters) - Berkshire Hathaway Inc's gain on its investment in Apple Inc. stands at more than $1.6 billion after shares of the iPhone maker surged.<div><a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=UI7jALPkTYc:BG5KEHKFHD4:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?d=yIl2AUoC8zA" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=UI7jALPkTYc:BG5KEHKFHD4:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=UI7jALPkTYc:BG5KEHKFHD4:V_sGLiPBpWU" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=UI7jALPkTYc:BG5KEHKFHD4:-BTjWOF_DHI"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=UI7jALPkTYc:BG5KEHKFHD4:-BTjWOF_DHI" border="0" /></a></div><img src="http://feeds.feedburner.com/~r/reuters/technologyNews/~4/UI7jALPkTYc" height="1" width="1" alt="" />