ETF Watch
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比特币 ETF carry 提醒交易者，基差套利并不无摩擦
一篇近期 arXiv 论文比较 IBIT 期权和 CME 比特币期货，说明抵押品、保证金和交易场所规则会影响套利闭合。
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Bitcoin ETF carry is a reminder that basis trades are not frictionless
A recent arXiv paper comparing IBIT options and CME Bitcoin futures highlights why collateral, margin and venue rules can keep arbitrage from closing cleanly.
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比特币的 CPI 反弹要和 ETF 需求分开看
美国通胀降温后，比特币上探 65000 美元附近，但交易者更应同时观察美元、收益率和现货 ETF 资金流。
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Bitcoin CPI bounce is useful only if traders separate macro relief from ETF demand
Bitcoin moved toward the mid-65000 area after softer U.S. inflation, but the cleaner read is still a three-part check: dollar, yields and spot ETF flow.
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英国 2027 年 DeFi 税务调整的重点是确认时间，而不是降低交易风险
HMRC 对部分加密借贷和流动性池交易采用递延处理，有助于减少税务错配，但不能替代风控。
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The UK’s 2027 DeFi tax shift matters because it changes timing, not trading risk
HMRC’s new treatment for some crypto lending and liquidity-pool activity may reduce tax friction, but it does not remove smart-contract, liquidity or valuation risk.
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比特币 ETF 期权和 CME 期货都跟踪 BTC，却可能定价不同持有成本
关于 IBIT 期权和 CME 比特币期货的新研究提示，受监管的比特币工具也会因保证金、抵押品和套利摩擦出现价差。
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Bitcoin ETF options and CME futures can price different carry even when both track BTC
New research on IBIT options and CME bitcoin futures shows why traders should not assume every regulated Bitcoin wrapper prices the same funding and collateral risk.
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Strategy 增发筹现金而不增持比特币，交易者更要看资产负债表
Strategy 出售 MSTR 股票、提高美元储备，同时维持巨额比特币持仓不变，说明加密财库股不能只看 BTC 价格。
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Strategy’s cash raise shows why Bitcoin treasury stocks need balance-sheet analysis
Strategy sold new MSTR shares while leaving its large Bitcoin stack unchanged, making cash runway, preferred-stock obligations and ETF flow conditions important trading inputs.