That means the owner just bought and "forgot" it there. While for some of us who have been holding for the past 3 months, it's seems like a century. This is gentle nudge that if someone has done it then you can(that is, if this is your goal).
Some people have it within their capacity to just buy bitcoins and keep holding for an unspecified period of time. People who have this ability and strong holding ability usually have two characteristics in common. First, if you do your fact finding properly, you will find out that most of these persons have other very viable sources of income that can sustain them enough not to think of touching their investments in bitcoins. The second character common to extreme holders is their ability to resist the urge and pressure to sell off some of their bitcoins both in times when they need money and when the market looks to be performing good or bad.