What's the average performance of long term stock investors in terms of % profit per year? I want to know how I am doing compared to other people. Is there such a statistic?
If you are looking to compare yourself to a bench mark I would recommend comparing yourself to an index such as the S&P 500, or the DOW Jones industrial average.
If you can consistently outperform these then you are probably a better investor than 90% of the people out there investing money. Over a 30 year period these benchmarks tend to average about 10% per year.
The long term average of the US stock market is about 10%. But as you know, averages smooth the variance.
Another approach is to also look at the Rolling Return of the market in various increments. For long term investors that would be 10, 15 and 20 years. These give you insight into returns over good and bad times which you don't see when looking at average returns.
During the past 50 years through 2016, the worst 20 years returned 6.4% a year (1979). The best 20 years returned 18% a year 2000. These numbers do not include 2017 which was a good year. However, 1997 was a slightly better year (DJIA) so if anything, they are very modestly overstated.