1832 Asset Management Lp decreased its stake in Facebook Inc (FB) by 81.52% based on its latest 2019Q1 regulatory filing with the SEC. 1832 Asset Management Lp sold 202,746 shares as the company’s stock rose 0.62% . The institutional investor held 45,955 shares of the technology company at the end of 2019Q1, valued at $7.33M,…