This paper examines how efficiently the price premium for non-genetically modified (non-GM) soybeans at the Tokyo Grain Exchange (TGE) react to an announcement to change the contract unit, suppliers, and expiration date on the conventional soybean futures contract. Intervention analysis is used...

This study tests the price linkage among the U.S. major energy sources, considering structural breaks in time series. We use the Johansen cointegration method and find that only weak linkage sustains among the NYMEX WTI crude oil, Brent crude oil, gasoline, heating oil, coal, natural gas,...

This study investigates how markets for different levels of copper purity are interrelated by testing the long-run price linkage and causalities among the copper futures, primary, copper scrap, and brass scrap markets. It is expected that copper markets that deal with high purity levels, such as...

The market linkages among the non-genetically modified (non-GM) soybean, conventional soybean, and cor futures markets at the Tokyo Grain Exchange are investigated to find out if the two soybean futures markets and the corn futures market share price information in the presence of unknown...

This paper investigated whether the effect of the shale gas revolution on the U.S. gas market is still a domestic phenomenon or this revolution is influencing the global natural gas market. We used the Bai-Perron test to identify the break date related to the shale gas revolution and tested the...

This paper examines how efficiently the price premium for non-genetically modified (non-GM) soybeans at the Tokyo Grain Exchange (TGE) reacts to an announcement to change the contract unit, suppliers, and expiration date on the conventional soybean futures contract. An intervention analysis is...

The study identifies the impact of the changes in human mobility due to the announcement of the state of emergency to cope with the COVID-19 pandemic on the Tokyo gasoline, diesel, and kerosene markets. Indices reflecting the movements in the visits to transit stations and workplaces were used...