Mark Hulbert: You might think you’re a long-term investor. But new research shows your view is probably off by decades

The long term in the stock market is a lot longer than you probably think. A whole lot longer.

In fact, according to new research, it’s exactly 41.22 years.

It’s hard to overestimate the significance of this finding. While almost all of us pay lip service to the importance of being a long-term investor, few of us ever focus on why: The length…