There is a rumour about hard fork of ETH and the volume in the trading of ETH is aggressively growing .Prices are showing strength .Is it an opportunity to buy on rumour and sell on the news to book profit.
That is very true. Most people who had cheap eth sold when it was around 500-1000$ and never regretted doing so. This is the right time to buy and when things are good, you sell for new people at a higher cost.