The weighted average effective yield to maturity according to the index of the American corporate high-risk bonds and Eurobonds market is calculated on the basis of a portfolio of fixed-coupon securities issued in US dollars with a remaining maturity of at least 360 days and an issue volume of at least $2 billion. The index includes securities that were quoted on the Cbonds website for at least 16 trading days last month and have a credit rating of at least B3/B- and at least Ba1/BB+ from at least two leading rating agencies. The revision of the list of issues forming the index, as well as the inclusion of new issues, is carried out monthly.