Alphatec Holdings is trading 6.8% higher at $11.60 in pre-market, with no clear company-specific catalyst identified. - The broader pre-market backdrop is mildly positive, but index moves are mixed and do not clearly explain the stock’s gain. - Next quarterly results are scheduled for October 29; that previously announced date does not establish a reason for this morning’s increase. Available reporting described the October 20 rise as lacking a clear company catalyst.