It is called preservation of capital. Some are happy to sit on a 50-70% loss but others limit their loss and move on if the share price moves in the wrong direction.
The market reaction after the test results wasn't great dropping over 50% with one of the directors selling before and after results were announced as well as a few others who work in the industry selling at this time expecting some better numbers.
LWP Price at posting:
0.3¢ Sentiment: Hold Disclosure: Held