As indicated by predictions bitcoin should have achieved 15k$ by end of 2017 and fall in first week of jan 2018
In any case, shockingly its effectively reached 17k$ in 2017.
Should I purchase or hold my btc?I don't plan to sell at any point in the near future.
Bitcoin investment is always risky and same as the holding strategy. I believe there is no specific rule when it comes to holding. As long as you define your target profit. If you bought your coins at very low price (example: 5K level) then based on the current price you already gained a already 60%. The risk in holding is the price fluctuation. Thus, define your target profit and hold until you reach your goal.