Even if the op has made this thread 3 years ago, people can advice and read the best investments ways nowadays, thats why this thread keeps alive. Atleast i do believe people are doing those, trading had become a problem since the market doesnt know how to react to bitcoin dump, it were to altcoins grow stronger but didnt happenet, soo maybe hold your bitcoins its the best option.
You are telling a good advice but should see this thread is not 3 years ago. It is belong to 2016 of May, and in my opinion, may be he has been sold his bitcoins, because during the 2 months bitcoin has cross $1000, So it was a good opportunity to sell the bitcoins and make profit. Because who have more than 5 bitcoins, they are holding because when bitcoin price go up than they will be sold them and gain profit, and many persons did this.
I believe it were used as example and not the real time. There are several ways to invest 12btc as well lower ammounts, the thing is each one has its risks, trading, forex, gambling, casino banrkoll, lending i believe i talked about all ways, but be sure that each investment has its own risks and all are different.