Bitcoin ETF has seen five consecutive days of net inflows, so why has nearly 80% of it gone to IBIT?
币界网
1h ago
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For five consecutive trading days, totaling $853.5 million, funds in the US spot Bitcoin ETF have turned positive again. Just a week prior to this, such products experienced a net outflow of $61.5 million. Although the funds have returned, they have not evenly flowed into each ETF.
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连续五个交易日、合计8.535亿美元,美国现货比特币 ETF 的资金重新转正。就在此前一周,这类产品还净流出6150万美元。资金回来了,却没有平均流向每只 ETF。

上周五,这种分化摆在了台面上:BlackRock旗下 IBIT 净流入8670万美元,Fidelity旗下 FBTC 净流入4100万美元;Invesco旗下 BTCO 却净流出1940万美元,VanEck旗下 HODL 净流出1060万美元。市场一边回补比特币仓位,一边重新选择装资金的篮子。

6.9亿美元流向 IBIT

Decrypt引述 SoSoValue 数据称,IBIT 上周净流入约6.9亿美元,约占全部现货比特币 ETF 周净流入的80%。资金高度集中,并非行业普涨。

这组占比也改变了“ETF资金回流”的读法。如果增量主要由一只产品贡献,那么行业总流量上升,可能同时伴随其他产品份额承压。对发行商而言,竞争焦点不只是能否吸引比特币买盘,还包括能否留住已经进入ETF市场的资金。

头部产品通常拥有更大的规模、更活跃的交易和更好的流动性,容易成为机构调整仓位时的优先选择。部分产品出现流出,也可能与资金在不同 ETF 之间迁移有关,而非投资者整体退出比特币。

机构在选择ETF时,还会比较价差、成交深度、费用和内部合规成本。规模越大的产品,往往越容易获得新增交易,新增交易又会继续强化流动性。这种正循环可以解释资金为何集中,但现有数据无法确认每一笔流出是否都转入了IBIT。

日度数据同样没有持续加速。上周四净流入1.287亿美元,周五降至9890万美元。连续五天为正说明买盘确实存在,但流入速度和产品分布都在变化。

周五的分化尤其明显。IBIT与FBTC合计流入1.277亿美元,BTCO与HODL合计流出3000万美元。单日总量仍为正,却同时包含加仓和减仓。只看行业净值,会漏掉产品之间正在发生的重新排序。

利率预期改善,但不是唯一原因

Decrypt把资金回流与利率预期变化联系起来。CME FedWatch数据显示,市场对9月加息的押注在周五由55%降至40%,到周一又回升至46%。Cointelegraph提供的另一组数据则显示,截至周一,市场认为9月暂停加息的概率为56%。

这些数字来自期货价格,反映的是交易者当时的押注,并非美联储的政策承诺。概率短期反复,也说明市场尚未形成稳定的单边预期。

利率预期会影响美元流动性和风险资产估值。加息概率下降时,投资者通常更愿意增加高波动资产敞口;概率回升时,仓位又可能收缩。但ETF流量与利率之间并非一一对应,还会受到比特币价格、套利空间和季度调仓影响。

就业数据加剧了这种波动。周五公布的数据显示,7月雇主削减2.3万个岗位,市场此前预期增加9.5万个岗位。弱于预期的数据可能降低进一步加息的必要性,但单项数据不足以解释全部 ETF 流入。

HashKey资深研究员 Tim Sun 认为,在 AI 热潮短暂回调之后,机构资金重新买入比特币;这批流入可能同时包括投资组合再平衡和基差交易。买盘中既有配置需求,也可能有相对价值交易,并非所有资金都在押注比特币单边上涨。

基差交易尤其需要与方向性买入区分。交易者可以一边买入ETF,一边在期货市场建立反向仓位,赚取现货与期货之间的价差。这样的资金会推高ETF流入,却未必代表投资者看多后市。仅凭净流入数字判断情绪,容易高估买盘的方向性。

本轮数据给出了两个明确信号:现货比特币 ETF 结束了前一周的净流出,资金重新回到市场;增量资金则明显偏向 IBIT 等头部产品。

连续净流入值得关注,但还不能单独证明趋势已经反转。接下来除了看总流量,还要观察资金是否继续集中在少数产品,以及日度流入能否维持。

价格表现也需要与流量同步观察。若ETF持续吸金而比特币价格反应有限,可能说明卖盘仍在承接新增需求;若价格与流量同时走强,资金回补的影响才更直接。把ETF数据与期货持仓、基差和现货成交结合起来,才能更准确地区分配置盘与套利盘。

如果流入延续并扩散到更多产品,市场回暖的基础会更扎实;如果总量很快回落,而IBIT继续吸走绝大部分资金,那么更可能是产品集中度提升。未来几天的结构数据,会比一个“连续五日净流入”的标题更有判断价值。

*封面图片来源:Flickr(CC BY 2.0)。*

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