I don't know. Often with these smaller, lesser known companies it takes time for good news to filter through the markets. Perhaps an insto decided they wanted in. Perhaps something is coming, but MSL hasn't seemed particularly leaky in the past.
Just had a look at volumes, MSL has been very thinly traded all year, but volumes started picking up on July 26 for about 5 days, then volume started again on August 25 and has not stopped yet.
Will be interesting to see what happens today.
MSL Price at posting:
22.5¢ Sentiment: Buy Disclosure: Held