Top traders don't focus on quarterly reporting since it has nothing to do with success. To focus on meeting some quarterly objective assumes that you can control how much you make. Quarterly performance reporting seems to be nothing more than a tricky way to pretend that you can predict the market or shoot for profit targets. It's an artificial start and stop point. It's not real.
People even focus on their portfolios from a quarterly perspective.
You don't have to think much. However, to properly evaluate any trading style a rolling 36 month window at a minimum should be employed. For example, say a trading method had little performance gain for the last 3 months of the year, but since it's long term in nature it explodes with profit in the first month of the new year. With quarterly reporting you would look at this system as having a bad fourth quarter and a good start in the first quarter. This is plain dumb thinking.