Patrick Drahi's Altice NV slumped in Amsterdam trading as Goldman Sachs Group Inc. sold 793 million euros ($845 million) of the telecommunications company's shares to fund an options transaction with Drahi. The trade gives Drahi cash that he will use to pay off loans he had taken out to buy Altice shares after the company's initial public offering, the Amsterdam-based company said in a statement after markets closed Monday. Institutional investors bought 61 million shares from Goldman for 13 euros each, 8.9 percent below Monday's closing price, said a person with knowledge of the sale who asked not to be identified because the matter is confidential.