The ‘insane alpha’ of Muddy Waters’ Carson Block fades in a bad year where all bets are off for short sellers

• Recent calls to unload shares of GSX Techedu, TAL Education Group and Joyy backfired after the stocks rallied following brief dips
• The result has been a grim year of shorting China equities for Block, who earned his reputation following successful bets against companies like Noble Group and Sino-Forest