web3: Foreign media: Expectations of U.S. debt repurchase lower yields and push up Bitcoin prices
Cryptonews
2h ago
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Foreign media reports that after the U.S. Treasury Department expanded its long-term Treasury bond repurchase operations, long-term yields fell, and Bitcoin quickly rose. ETF Capital inflows and short covering became the main factors for this increase.
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外媒称,美国财政部扩大长端国债流动性支持回购规模后,长端美债收益率迅速回落,风险资产随之走强。文章认为,这一变化降低了持有高风险资产的机会成本,并通过 ETF 资金流入与衍生品空头平仓,放大了比特币当日涨幅。

回购上限升至 40 亿美元

美国财政部 8 月 19 日宣布,自 2026 年 9 月 9 日至 11 月 4 日,将 10 至 20 年期、20 至 30 年期名义票息国债的单次流动性支持回购上限,从 20 亿美元提高至至少 40 亿美元。相关长端操作频次也将由每季度 2 次增至 4 次。

文章指出,这类回购主要针对较旧、交易不活跃的“非当期”国债。财政部通过回购这些券种,帮助一级交易商减轻库存压力,释放资产负债表空间。原文强调,这并不等同于量化宽松,因为财政部通常会通过发行新的基准债券或更短期限债务来筹资,总债务规模并未因此扩大。

30 年期收益率回落

消息公布后,债市很快反应。30 年期美债收益率从前一交易日触及的 19 年高位 5.34% 回落至 5.19%,单日下降 9 个基点;10 年期收益率降至 4.647%。

在这一背景下,比特币从日内低点 64,100 美元升至 69,500 美元,12 小时内上涨 8.2%,创 6 月初以来高位。文章认为,长端收益率下行会压低无风险收益,进而降低持有比特币这类非生息资产的机会成本,资金因此更愿意转向风险资产。

ETF 流入叠加空头平仓

除利率变化外,机构资金与衍生品市场也加快了行情演变。数据显示,美国现货比特币 ETF 在 8 月 17 日和 18 日合计净流入 4.87 亿美元,其中贝莱德 IBIT 在 8 月 18 日单日吸金 1.436 亿美元。

文章还提到,主要交易所当日空头强平总额达到 14.4 亿美元,其中 12.9 亿美元在 1 小时内完成。外媒据此认为,现货资金提前流入、收益率快速回落,以及高杠杆空头集中平仓,共同构成了这轮上涨的主要推力。

  • 长端国债单次回购上限:20 亿美元升至至少 40 亿美元
  • 比特币日内区间:64,100 美元至 69,500 美元
  • 现货 ETF 两日净流入:4.87 亿美元

补充信息:文中援引 Bitwise 研究负责人 Andre Dragosch 的说法称,比特币往往会更快反映宏观流动性变化,因此这轮上涨被视为美债、ETF 与衍生品市场联动后的结果。

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