How much can you make off of stocks per year?

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If your 'concentrated' portfolio of stocks all have exceptional share price performance, I extend my congratulations on your excellent stock picking skills. You may have unknowingly apply Pareto Principle to correct identify the 20% of the stocks you screened to be the winning ones and focus on these and put them into your investment portfolio. The rest of the 80% of the stocks you screened, you also correct identify them as likely average performers and discard them. Keep up the good work!