IBM's robust Q2 results drove the stock higher, nearly reaching new all-time highs. Big Blue hasn't ventured anywhere near that milestone since 2013.IT veteran International Business Machines (IBM 4.33%) reported second-quarter results on Tuesday evening. Big Blue knocked this quarter out of the park, crushing analyst estimates across the board. As a result, the stock surged as much as 6.7% higher on Wednesday.Q2 sales and earnings beat expectationsIBM's second-quarter sales crept 2% higher year over year, ...