Today’s upgrades for Validea’s Book/Market Investor model are based on Joseph Piotroski’s strategy, which screens for high book-to-market stocks and financially sound firms. AUNA SA (AUNA), a small-cap value stock in the Healthcare Facilities industry, saw its rating change from 0% to 90% based on fundamentals and valuation. Auna SA, a Luxembourg-based healthcare company, provides prepaid healthcare plans, medical care, and oncology solutions. The stock meets most of Piotroski’s criteria, making it of strong interest to the strategy. Joseph Piotroski, an accounting professor, developed a stock-selection method that produced impressive returns. Validea is an investment research service that follows the strategies of investment legends like Piotroski.

Read more at Nasdaq: Validea Joseph Piotroski Strategy Daily Upgrade Report – 10/28/2025