Major shareholder says Dell worth $42B, $18B higher than sale price proposed by company

An attempt by Dell Inc.'s largest outside shareholder to value the computer manufacturer at $18 billion higher than the $24.4 billion proposed by the company to take it private faces an uphill battle, the Wall Street Journal reported.

According to Southeastern Asset Management Inc., a Memphis-based investment firm that owns 8.5 percent of Dell's outstanding shares, the tech giant is worth $24 a share, and not $14 as proposed by Dell. Southeastern is urging other shareholders to join the opposition.