On Monday, Western Digital (WDC.US) stock reached a historic high of $118.137. As of press time, the stock was up over 8%, trading at $116.08. This follows target price upgrades from two brokerages. Morgan Stanley analyst Erik Woodring raised the stock's target price from $99 to $171, while Rosenblatt analyst Kevin Cassidy increased the target price from $90 to $125.