actively trading or one stock doubled?
Active trading. Most of the money I made was from buying the type of stock I mentioned earlier today - like RFL - where the stock was worth a lot of money for an extended period and then dropped drastically. I have missed, but there usually is at least some rebound.
One example: ATER, was $47 in Feb, dropped drastically. I bought in at $5.48 on 8/9, it dropped till $3.11 before it started to rebound. Sold 9/13 for $17.20. (It subsequently dropped again, now at $6.85. And I bought some more recently, hoping it will go up again.)
Another example: ALLO, was between $21 and $39 for a year, then suddenly dropped to $13 after a test was put on hold. I bought at $13.77 on 10/11, and sold for $16.35 on 10/26.