1. Report Industry Investment Rating No relevant content provided. 2. Core View of the Report The ultra - long credit bond market is experiencing an over - heated sentiment. The ultra - long credit bond market has shown strong performance in both the primary and secondary markets, but there are still vulnerabilities in the market due to the extreme behavior of trading - oriented investors [2][3][4][5]. 3. Summary by Directory 3.1 Ultra - long Credit Sentiment Over - heated 3.1.1 Stock Market Characteristics The ultra - long credit bond market is in an extremely strong situation. The central bank's support for the capital market boosts the bullish sentiment in the bond market. As the yield of coupon assets further declines, the ultra - long credit bonds have strengthened. The number of outstanding ultra - long credit bonds with a yield below 2.2% has increased to 656 compared to last week [2][13]. 3.1.2 Primary Issuance Situation The subscription sentiment for new ultra - long industrial bonds continues to heat up. This week, the issuance scale of new ultra - long credit bonds totaled 31.61 billion, a 153% increase in supply compared to last week. Affected by the re - issued bond "24 Zhonghua 06 (Re - issued)", the average issuance rate of new ultra - long industrial bonds has significantly increased compared to last week. Coupled with the hot market for ultra - long bonds in the cash market, the subscription sentiment for new ultra - long credit bonds continues to rise [3][21]. 3.1.3 Secondary Trading Performance - **Index Performance**: The ultra - long credit bond index leads the market. In the latest week, the ultra - long credit bond index had a leading increase. The weekly increase of the AA+ credit bond index over 10 years was around 0.9%, while the increase of the same - maturity treasury bond index was 0.77% [4][28]. - **Trading Volume**: The trading volume of ultra - long industrial bonds has exceeded the previous high. This week, the market's enthusiasm for speculating on ultra - long credit bonds has further increased. The weekly trading volume of industrial bonds with a maturity of 7 - 10 years reached 644, far exceeding the weekly average during the previous round of the market in January this year. The total trading volume of credit bonds over 10 years also reached 167, indicating a hot trading sentiment [4][31]. - **Trading Yield**: The weekly average trading yield of the most active 7 - 10 - year industrial bonds has dropped to 2.14%, and the spread with 20 - 30 - year treasury bonds has narrowed to 27BP [4]. - **Investor Behavior**: The intensity of low - valuation bond - grabbing for ultra - long credit bonds has significantly increased, and the trading preference for 10 - 20 - year urban investment bonds has also recovered. The proportion of TKN transactions for credit bonds over 7 years has risen to over 80%, reaching around the 90% historical high since 2024 [4][35]. - **Investor Structure**: This week, insurance companies and funds remain the main investors in ultra - long credit bonds. Among them, funds have had a net purchase of ultra - long credit bonds exceeding that of insurance companies in the past two weeks. This week, the scale of funds' increase in 5 - 10 - year credit bonds was more than 7 billion, setting a new high since the first half of the year [41].

存量市场特征 超长信用债行情持续。中短久期信用债收益率已接近年内低点，后续下行幅度存在约束，部分投资者倾向于拉长久期 赚取超额收益。与上周相比，2.2%以下收益率的存量超长信用债只数增加至 336 只。 一级发行情况 超长信用新债认购情绪回升。本周"25 国新控股 MTN001(稳增长扩投资专项债)"和"25 诚通控股 MTN001(稳增长扩 投资专项债)"两只稳增长扩投资专项债发行上量，合计发行规模 395 亿，带动超长信用新债供给量显著上升。不过 因本周超长新债发行只数偏低，平均发行利率受部分个券影响而出现较大的波动，超长产业新债票面利率上行至 2.42%。 好在票息的增加也推动了超长信用新债认购情绪的回暖，本周新债认购热度回升至 24 年来 50%左右分位。 二级成交表现 超长信用债表现稳定。最新一周 10 年以上国债指数领涨债市，超长信用债指数表现也比较稳定，10 年以上 AA+信用 债指数上涨 0.36%。 虽然从成交笔数上看，6 月超长信用债交投情绪出现降温，但 7 年以上信用债 TKN 成交占比读数仍显示超长信用债具 备不低的买盘热度，且成交收益与估值偏离幅度相比上周也未有较大波动。 投资者结构 ...