The Walt Disney Co and the Shanghai Shendi Group are spending an additional $800 million on their theme park resort in Shanghai to add more attractions before it opens at the end of 2015.

The additional spending raises the investment total to about $5.44 billion for the park's two owners. Shanghai Shendi is a conglomerate of State-owned enterprises established by the city government to develop the park.

Shendi has a 57 percent stake in the park, with Disney holding the remainder.