Alphatec Holdings is trading at $11.00, up 8.70%, in pre-market on September 28; no clear company-specific catalyst was identified. - Latest reported company news was the September 23 appointment of Thomas Carls to a newly created executive role. - President Trump’s rejection of Iran’s proposal renewed concerns over oil supplies and risk sentiment. Reuters reported mostly lower share markets and higher oil prices on September 28, but available evidence does not establish that this backdrop explains Alphatec Holdings’ gain.