International Business Machines (IBM -6.97%) stock is losing ground Thursday despite posting a better-than-expected first-quarter report yesterday. The company's share price had fallen 7.5% as of 12:15 p.m. ET amid the backdrop of a 1.2% gain for the S&P 500 (^GSPC 1.73%) and a 1.8% jump for the Nasdaq Composite (^IXIC 2.28%).IBM beat sales and earnings expectations and reiterated solid guidance for the year. But sales for the company's consulting segment came in lower than expected, and that's dampening so ...