周一（9月21日），比特币现货ETF单日净流入9.99亿美元，这是去年10月以来的最大单日流入，也是连续第3天净流入（9月18日4.33亿美元，随后延续）。同一天，恐慌贪婪指数升到78，处于"极度贪婪"区间，是过去7天的最高点。
这事儿值得多看一眼，因为它跟前一天的行情不是一回事。周日那波反弹，很大程度是空头被挤仓——做空的人扛不住被强制平仓买回，价格被动推高，没有真实增量资金。周一这9.99亿美元不一样，这是ETF渠道的真实申购资金，跟杠杆挤仓完全是两套逻辑。
我们在9月19日就把BTC的判断从"谨慎看多"升级为"看多"，当时的依据是：BTC在81,311美元附近出现极端拉升，但合约未平仓量只增加了0.4%——这说明那波涨势背后没有杠杆堆积，更像是真实买盘在推动。这次ETF资金连续三日净流入，跟当时排除杠杆炒作、押注真实买盘的判断方向是一致的。
目前BTC报86,074美元，24小时涨0.9%，7天涨11.9%，仍处在7天高点附近。资金面看起来比前几天扎实，但恐慌贪婪指数78已经是极度贪婪区间，这种情绪下最容易出现的就是短期回调，两者不矛盾，投资者自行判断风险。
Monday's headline: bitcoin spot ETFs pulled in $999 million in net inflows in a single day — the biggest since last October — marking a third straight day of net buying (following $433 million on Sept 18). Same day, the Fear & Greed Index climbed to 78, Extreme Greed, its highest reading in a week.
Worth separating this from what happened the day before. Sunday's bounce leaned heavily on short sellers getting squeezed out — forced buybacks pushing price up, not fresh capital coming in. Monday's $999 million is a different animal: actual ETF subscription money, not leverage unwinding.
On September 19 we upgraded our BTC stance from cautiously bullish to bullish, based on a specific signal: during a sharp move near $81,311, open interest on futures rose just 0.4% — meaning the rally wasn't leverage-driven, pointing instead to real spot demand. Three straight days of ETF inflows since then track with that call.
BTC now sits at $86,074, up 0.9% on the day and 11.9% over the week, still near its 7-day high. The flow picture looks sturdier than it did a few days ago. But Extreme Greed at 78 is exactly the kind of backdrop where short pullbacks tend to show up. Both things can be true at once — read the risk accordingly.