Curiously, short sellers are going after the major tech firms that represent much better value. In just the first two weeks of March (for which data were released earlier this week), four tech titans with a combined market value of $600 billion -- ( Intel (Nasdaq: INTC ), Microsoft (Nasdaq: MSFT ), Cisco Systems (Nasdaq: CSCO ) and Applied Materials (Nasdaq: AMAT ) ) -- have seen a notable uptick in short-seller interest. Corning (NYSE: GLW ) and Juniper Networks (Nasdaq: JNPR ) have also come into sharp focus for short sellers.