Markets Right Now: Stocks struggle higher on Wall Street

NEW YORK (AP) — The latest on developments in financial markets (all times local):
11:45 a.m.
Stocks are mostly higher at midday after wobbling for much of the morning, led by gains in health care and energy stocks.
Biogen soared 25% Tuesday after the drug company said it would seek federal approval for a medicine to treat early Alzheimer’s disease.
Technology and communications companies were falling. Facebook gave up 2.6%.
Financial companies were also lagging the rest of the marke