"I saw a penny stock run without a news release from the company for several months."
But there are things to consider outside of news releases. One important thing that some people seem to forget is the fact that low float penny stocks can move on very little volume. This can actually be used as a scam that goes like this:
1. Scammer finds a low float penny stock and tests it's movement with a test purchase or two. This could be looked at like a thief casing a house over several weeks.
2. The scammer confirms a usable low float penny stock and then accumulates a position.
3. The scammer then advertises the stock as a huge potential 10-bagger through a variety of appealing sell points: Possible reverse merger, links to false websites posting false financial data, and other lies.
4. The scammer launches a massive campaign to spread the data from step 3.
5. Once the low floater is attacked vigorously by investors the scammer is the first person to sell his/her shares leaving the lemmings to fight amongst themselves... attempting to find their exit point.
Of course, TSSP is NOT a low floater. I was just illustrating that "other" stocks can move because of a low float.
All IMO and mostly speculation. I don't have first hand experience but after years of investing I'm nearly certain I've seen this in action.