Two companies that I have been following fairly recently came out with their BFS:
guy.to - released bfs on February 24, 2012. Close on February 23, 2012 8.40. Current share price 4.83.
ncu.to - released bfs on January 23, 2012. Close on January 20, 2012 5.56. Current share price 4.50.
Your average investor has not done sufficient DD on CUU.V and is assuming they will be able to buy for cheaper after the release of CUU's BFS. Other investors are waiting to buy after seeing the BFS content with a smaller gain with less risk to bare.
You also have the continuing economic problems on the horizon and that supposed pullback coming for 2012... many people are waiting for the perfect entry.