SAN FRANCISCO – IBM Corp. and Advanced Micro Devices Inc. were in the tech spotlight Wednesday, with investors sending both companies' shares into the red following negative earnings results and forecasts. IBM gave up 3.3%, to trade at $182.21 after its fourth-quarter sales missed analysts' estimates and the tech giant suggested its first-quarter earnings might miss Wall Street's expectations. AMD was off by 11% at $3.72 a share after the semiconductor company gave a weaker than expected first-quarter outlook. The tech-heavy Nasdaq Composite Index rose 6 points to 4,231.
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