Daniel Gladiš has been an active stock investor since the early 1990s. He is a director in the Vltava Fund, which he founded in 2004. Hidden Investment Treasures is his third book. His first two best-selling books, Learn to Invest (2004) and Stock Investing (2014) were published in Czech by Grada Publishing. Gladiš lives in Brno, Czech Republic, and spends his free time with his family, cross-country skiing, studying, and travelling.