As a means to reduce delays in public works implementation, a number of Brazilian states have recently reformed their procurement rules allowing contractor price proposals to be assessed before the technical evaluation of submitted bids is undertaken (in a procedure known as inversão das...

Electronic reverse auctions are the most used competitive method for procurement of goods and non-consulting services by the Federal Government of Brazil. These auctions are closed randomly, which perfectly satisfies fairness considerations but may be suboptimal from an efficiency perspective....

This article aims to outperform Warren Buffet's portfolio published on July 29, 2022 on The Motley Fool website. We used as a method the formation of a portfolio with 7 assets, similar to the 7 assets representing 80% of Buffet's portfolio, selected of the S&P500 index assets. We used daily data...