Deals are rarely smooth, and an anomaly with Discovery’s share price dovetailed with the negotiations. Discovery’s stock began to inexplicably rocket in February and March to $75 from $45 because of a convoluted trading scandal involving Archegos, a little-known private investment firm that bet big on Discovery and other companies via derivatives using billions in borrowed money.With banks forced to buy shares to hedge their spiraling exposure to Archegos, Discovery’s market value jumped nearly 60 percent, for no obvious reason to outsiders. But by May, the stock had returned to where it was during Mr. Zaslav’s initial approach, …
