Driehaus Capital Management LLC boosted its holdings in Xenon Pharmaceuticals Inc. (NASDAQ:XENE – Free Report) by 2.3% in the second quarter, HoldingsChannel.com reports. The firm owned 4,760,853 shares of the biopharmaceutical company’s stock after buying an additional 105,928 shares during the quarter. Xenon Pharmaceuticals comprises about 2.3% of Driehaus Capital Management LLC’s investment portfolio, making […]