The warning from Best Buy spooked shareholders for many leading personal-computer and electronics companies. Apple Inc. (AAPL: 90.12, -4.65, -4.9%) , Dell Inc. (DELL: 10.50, -0.83, -7.3%) and Hewlett-Packard Co. (HPQ: 31.14, -2.11, -6.3%) sell their products as Best Buy stores, and Calyon Securities analyst Shebly Seyrafi said those companies will feel some impact
















