 Billionaire investor Bill Ackmans SPAC Pershing Square Tontine Holdings NYSE: PSTH said on Monday it is no longer pursuing a deal to buy 10 of Universal Music Group, a unit of Vivendi SE OTC: VIVHY. What Happened: Ackman-led special purpose acquisition company had last month said it was buying the 10 stake in Universal for about 4 billion, creating a new special purpose acquisition rights company, or a SPARC, which was expected to trade on the NYSE or Nasdaq. 