Comcast (CMCSA.O) plans to separate its media and technology businesses into two leading publicly listed companies.

Nasdaq-100 turns lower.

Capital Economics' APAC markets head Thomas Mathews said in a note the recent US Treasury rally that pushed yields lower is likely to lose momentum and German bunds may rally further. He said Treasuries face key tests this week: one rationale for Fed rate cuts is protecting the labor market, but labor-market momentum has strengthened and he expects the US June jobs report due later this week to be strong again; it's increasingly clear labor conditions will not be a reason to delay tightening, which he flagged as perhaps the biggest near-term risk to Treasuries, though not the only one.