There are two popular Piotroski score screeners on the website - one that looks at only the Piotroski Score to select stocks, and the second that looks at a combination of Piotroski Score, ROCE, ROE and Earnings per Share.

This well-known Piotroski Score rates a stock between 0 and 9 (zero being worst, and nine the best) based on a company's financials. The score awards points to a company based on profits, revenues, net assets, cash flow, debt and margins. The High Piotroski Score Screener looks at stocks with a score greater than 7. As of today, this screener has five stocks in its list. It also tends to hold on to stocks for longer - the strategy picked up Dilip Buildcon in August 2017 for example, and sold it in May 2018 at a 44%+ gain. For longer-term investors, this is a good strategy since it cycles through fewer stocks, and selects financial high-performers. 

The second screener, the High Piotroski Score with ROCE, ROE and EPS picked equal number of winner and loser stocks, making it a riskier strategy, but had higher returns overall. As markets turn choppy this screener doesn't have as much luck.