2月13日，债券市场投资者见证了一次历史级奇观。 真相只有一个：一年一度的"春节套利"窗口，被聪明的资金玩出了新高度。 解密：同一笔钱，如何赚两份"假期工资"？ 这套被疯传的"1天赚11天利息"大法，操作只有两步，却精准卡位交易所规则缝隙： 第一笔：2月12日，操作1天期国债逆回购。下午3点半前，在交易软件敲入204001或131810。资金仅被占用今天（13日）一天，但交易所计 息规则慷慨地奉上11天的假期利息——这是市场熟知的"春节红包"。 第二笔：2月13日，511580接棒，假期继续生息。今天上午，逆回购资金到账，状态为"可用不可取"。这就够了。下午3点收盘前，无缝买入 国债政金债ETF招商（511580）。该ETF底层为国债+政策性金融债，国家信用背书，今日买入，明日即开始计息，整个春节假期的票息一份 不落。 于是，同一笔本金，在11天假期里，同时拿着逆回购的11天利息 + 债券ETF的11天票息。 一份本金，双份收益。这就是传说中的"一鱼多吃"，也是511580今早被资金暴力抢筹、甚至一度买出涨停价的底层逻辑。 为什么偏偏是511580？ 国债政金债ETF招商（511580）盘前大涨8.66%！尽 ...

Core Viewpoint - The article emphasizes the opportunity for investors to utilize idle funds in their stock accounts during the Chinese New Year holiday by engaging in specific financial operations that can yield returns. Group 1: Investment Strategy - Investors are encouraged to perform a one-day reverse repurchase agreement (repo) before the holiday, which allows them to earn interest for the entire 11-day holiday period [1][2][3] - The second step involves using the funds from the reverse repo to purchase a government bond ETF, which also begins accruing interest the day after purchase, maximizing returns during the holiday [4][5] Group 2: Benefits of the Investment - This strategy allows investors to earn dual returns: interest from the reverse repo and coupon payments from the government bond ETF during the holiday [6] - The government bond ETF is characterized by high safety due to its backing by government credit, with minimal risk of default [8] - The ETF offers superior returns with an annualized yield of 2.49%, significantly higher than typical money market funds [8] - The investment incurs low fees, with a management fee of 0.15% per year and a custody fee of 0.05% per year, making it cost-effective [9] - The ETF provides strong liquidity with T+0 trading, allowing for immediate access to funds post-holiday [9] Group 3: Operational Considerations - The strategy requires timely execution: the reverse repo must be completed by 3:30 PM on the same day, and the ETF purchase must be made by 3 PM the following day to ensure the strategy's effectiveness [10]