Donald Trump claimed Howard Stern lost relevance after backing Hillary Clinton in 2016. Amid rumors, SiriusXM may drop his show, Trump said Stern 'went down' post-endorsement. Neither Stern nor SiriusXM has confirmed his exit. Stern's $500 million contract ends this fall. Benchmark said his potential departure won't affect SiriusXM's financials, reaffirming a 'Buy' rating on the stock.