The price of S7 has been quiet steady the last few months, but I always try to sell and buy the hash for better prices, made some 0.05 btc on 2 weeks like that :p
What % is this if what you were investing or how much has were you buying and selling to get this?
I had 0.6 btc spread over s7-s9 and just constantly bought and sold and best prices for a week or two, got out a day before major hash leap lol