利率周记（5月第3周）：TS合约还能正套吗？

Group 1: Report Information - Report Title: "TS Contract: Can It Still Be Used for Cash-and-Carry Arbitrage? - Interest Rate Weekly (Week 3 of May)" [1] - Report Date: May 19, 2025 [2] - Chief Analyst: Yan Ziqi, with a practice certificate number of S0010522030002 [2] - Research Assistant: Hong Ziyan, with a practice certificate number of S0010123060036 [2] Group 2: Industry Investment Rating - No industry investment rating is provided in the report. Group 3: Core Views - Since the implementation of reciprocal tariffs on April 3, the bond market's maturity yields have first decreased and then increased. Among treasury bond futures, the TL contract has been strong, while the TS/TF/T main contracts have declined [2]. - The weak performance of the TS contract is due to the previous large premium and the change in the expectation of loose monetary policy. The market's expectation of loose monetary policy changed significantly in Q1, and there are differences in the short - term expectation of loose monetary policy after the double - cut in May. The yield curve has flattened instead of steepening as expected [3]. - As of May 16, the basis of the TS main contract is - 0.07 yuan, and the IRR is 1.79%. The basis has significantly converged, and the IRR is close to the capital interest rate, so the cost - effectiveness of cash - and - carry arbitrage is insufficient [4]. - In the short term, the TS contract may still be in a premium state because of the continuous negative carry. The inversion between R001 and the 2 - year treasury bond maturity yield has decreased from about 60bp at the beginning of the year to 15bp on May 16, and the negative carry phenomenon of some varieties will continue [4]. - Considering that the tight capital situation in Q1 will not repeat, the short - term interest rate has a ceiling and the probability of a sharp decline is low. With the significant convergence of the basis, one can consider participating in the possible rise of the TS contract [4]. Group 4: Analyst and Research Assistant Introduction - Analyst Yan Ziqi is the assistant director of the Research Institute of Hua'an Securities and the chief analyst of fixed income. He has 8 years of experience in sell - side fixed income and equity research, and has won the second place in the 2024 Wind Gold Analyst and the best analyst in the 2023 Choice fixed income industry [12]. - Research Assistant Hong Ziyan is a master of financial engineering from the University of Southern California, covering macro - interest rates, institutional behavior, and treasury bond futures research [12].