MicroStrategy shares fell over 5% Thursday, extending a seven-week downturn and adding to an 11% weekly drop after last weeks 17% slide. JPMorgan warned the stock could face $2.8-$8.8 billion in forced selling if MSCI excludes Bitcoin-heavy firms from its indexes. With eight losses in 10 sessions, critics like Peter Schiff say Saylor Bitcoin bet is dragging the stock.