Quote from lost100k:
My MRNA trade is an example or a lesson to show the bad thing of average down. I know the rule that do not put all eggs in one basket, so adding MRNA from 10K to 60K, which is 5% to 30% of the portfolio. I stopped out with 30K loss (15%) on a 30% of the portfolio.
I bought MRNA at around $3.5 in the day that news coming out their drug approved which is 100% up from previous day. I just wanted to take another 10%-20% to make $1000 on that $10000 position. Actually not so serious on that trade, it is just one of the trade I made. Though I realized that the news is not so exciting since it is just a re-labeling approval that day, the stock is down at $2.4. I add another $10000 at $2.4, average down, and hope to see it back to $2.8
then I can have less loss on that. I have never seen a stock drop that much and have no bound. This is the stock, no bound at all and drop to $1.9
the next day , announcing a new stock offer to some investor at $2. I add another $10000 at $1.9. If new investor buy at $2, I guess it will go up after that offering and I can break even. This would be like HEB. This stock has no bound at all for a single day, single hour with no any chance to get out. I add $30000 at $1.6 and stopped out all the position at $1.5. This is the bio-stock and I do not know when it will go up again after this wave and do not know how much it will further go down with the book value of $0.2. The loss is 30K.
Whole story about my loss on MRNA. One trade, average down, does not work.