Interest Rates Increasing...?

[Mark Douglas]

What affect do increasing interest rates have on investors?  I image there are quite a few investors that have low interest loans in their portfolios.  I've heard a few people say something like, "Banks may start reviewing their portfolio and looking at the ones with the lowest interest rates." 

Does that mean they (the banks) could ask investors to refi out of the low interest loans?  I thought the whole point of a fixed rate loan was that it was.. "fixed" lol

Any thoughts?