AlphaQuest LLC grew its stake in Penumbra, Inc. (NYSE:PEN – Free Report) by 237.9% in the second quarter, according to the company in its most recent 13F filing with the Securities and Exchange Commission (SEC). The institutional investor owned 838 shares of the company’s stock after buying an additional 590 shares during the period. AlphaQuest LLC’s holdings in Penumbra were worth $215,000 at the end of the most recent reporting period. Get Penumbra alerts: A number of other hedge funds and other institut ...