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日本国债收益率飙升,或引发“套息交易”逆转风暴

日本政府债券市场近期震动引发了全球金融市场的高度关注。随着长期国债收益率迅速攀升,外界开始担忧,日本投资者可能会将资本撤回本土,从而引发全球“套息交易”的解体。

日本40年期国债收益率在最近一周触及3.689%的历史高位,尽管稍后有所回落,目前仍高达3.318%,比年初上涨了近70个基点。同时,30年期国债收益率也上涨至2.914%,距离历史高点不远。这种剧烈上升趋势引发了市场对资本流向变化的担忧。

所谓“套息交易”,是指利用日元等低息货币借款,再将资金投资到美国等高息市场,获取利差收益。但一旦日本债券收益率变高,吸引力增强,日本资金可能会大量撤出海外市场,尤其是美股和美债市场,从而对全球资本市场造成压力。

在这种背景下,一些市场参与者甚至警告,如果日本国债收益率持续走高,可能会成为引发全球金融“地震”的导火索。过去多年,日元因利率极低,被广泛用作“融资货币”。一旦这条通道被切断或出现逆转,全球多个市场可能面临资金流失和估值压力。

与此同时,日元年初至今已升值超过8%。若日元持续走强,不仅会削弱日本企业出口竞争力,也会诱发全球对日元空头头寸的集中平仓,从而加剧汇率波动。

部分分析指出,日本寿险公司此前对长期债券的配置目标已基本达成,而随着日本央行收紧货币政策、减少购债规模,市场上买盘减少,供需失衡将推高收益率。此外,美国短债与日本短债之间的利差也从去年二季度的450个基点缩小至当前的320个基点,使得套息交易的利润空间进一步压缩。

不过也有观点认为,这轮“套息交易”逆转并不会像2024年8月那样突然爆发,而是更可能以缓慢、逐步的方式进行,因为当前美元走势疲软,对做空日元的吸引力减弱,持有空头头寸的规模也有限。

更深层次的担忧在于,日本是全球第二大债权国,拥有高达3.7万亿美元的净对外资产。如果大规模撤资回流,将进一步收紧全球流动性,推高融资成本,抑制全球经济增长。

然而,目前多数日本海外投资仍集中于美股等风险资产,而非美债,这为市场提供了一些缓冲。短期内,日本投资者并不会大规模“抛售”美债。

对于外汇交易员来说,关注日元走势、利差变动及市场波动性变化将变得尤为重要。当前市场正处于敏感节点,一旦日本国债收益率继续上行,日元快速升值,套息交易链条断裂的风险将全面显现。

2025-05-28 23:26
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