Any dynamic of energy products price leads to changes both at the level of the real economy and also with regards to ?nancial markets. Among energy commodities, crude oil and natural gas are the most consumed in the production of a wide variety of goods and services; they are recognized as in?ationary commodities as long as each ?uctuation of their prices is quickly re?ected in the ?nal price of other goods and services. There is a huge literature with varied approaches regarding the interactions between oil price and stock market, a smaller number of works about oil and bond markets, natural gas and stocks, or natural gas and bonds, and an insigni?cant amount of studies concerning the simultaneous interaction of all four markets together. Thus, the novelty that this study brings into attention relates to the simultaneous analysis of stock, bonds, crude oil and natural gas markets, in order to observe the in?uence of both oil and natural gas on stock and bond markets con currently. The necessity of simultaneous analysis is due to the fact that studying ?nancial markets in isolation o?ers no relevant solutions, as long as one in?uences others.