Holy smokes! A couple of years ago, I used a volume scan to search for stocks under $4, for the derby pos contest. I don't look thru it very often, but due to the long weekend, I am today.
If you get a chance? Look at my chart list titled low dollar derby scan less than $4- 9/19 close price. The majority of those stocks are trading for less than .05 today. Yikes!!!!