As the bitcoin's price is rising nowadays holding the coins could be profitable method to growing up our bitcoins, you can also building your account in this forum and reaching good rank and joining the signature campaign there to make some extra income
Holding can't increase the quantity of your coins. Ups or down in the price, still the number of your coins will remain the same.
To really enjoy the price uptrend, increase your hold coins with any method you know.
That is certainly true, but there is a way that you could grow your coins even when holding. You could try lending your Bitcoins at Poloniex exchange or hold them in a savings account such as Magnr that would generate interest over time. So far, this have worked a lot for me, but at times it could be risky as well.
What about the loans, do you receive anything close to 2%, or is it considerably less? How do they maintain the integrity of the loans?