A stock split-up occurs when a company separates into two (or more) parts and distributes the stock of the various parts to its shareholders. This is different from a split-off because in a split-up the stock of the original parent corporation you previously owned no longer exists. The original company is liquidated when stock is issued in the two (or more) new companies. In comparison, in a split-off the previous corporation continues in existence. This is more fully explained on the Stock Split-Up page.
Click on the image to the right to access our split-up calculator.
Data has been pre-filled for you in the calculator selection menu for recent split-ups such as: