Jefferies Financial Group Inc. lowered its position in MongoDB, Inc. (NASDAQ:MDB – Free Report) by 67.0% during the second quarter, HoldingsChannel.com reports. The firm owned 8,248 shares of the company’s stock after selling 16,752 shares during the quarter. Jefferies Financial Group Inc.’s holdings in MongoDB were worth $3,390,000 as of its most recent SEC filing. […]