先说结论：这轮加密总市值24小时跌了3.47%，但机构买盘没有跑，这更像是一次主动去杠杆，而不是恐慌性踩踏。
证据是什么？美联储最看重的通胀指标（核心PCE，衡量剔除食品能源后的物价年涨幅）7月读数报3.3%，比预期高，市场对9月降息的期待跟着降温。这是这轮下跌的导火索。但同一时间，比特币现货ETF（在传统股票交易所上市、让普通投资者也能间接买比特币的基金）8月25日单日净流入3.14亿美元，已经连续7天净流入；以太坊ETF更是连续9天净流入，两者加起来14天吸金超36亿美元。钱没有从这个门跑出去。
再看杠杆指标：资金费率（永续合约多空双方互相支付的利息，能反映杠杆热度）和未平仓合约都在同步下降，这种组合通常说明是投资者主动减仓、而不是被强平踩踏出局的连环爆仓。恐慌贪婪指数还停在65分（贪婪区间），情绪转向防守但没崩溃。链上数据也显示，过去一周仍有大户把BTC、ETH从交易所转出去囤积，稳定币供应也在扩张，这些通常是长线资金还在场的信号。
弱化条件也得说清楚：BTC现价78,037美元，24小时跌1.2%，距7天高点只差3.3%，谈不上崩盘。我们此前一段时间对BTC的判断在"谨慎看多"和"中性"之间来回摇摆，主要就是纠结ETF资金流能不能稳定转正，这次连续7天净流入算是把"机构买盘节奏没变"这个判断往前确认了一步。
什么情况下这个判断会失效？如果ETF转为连续净流出，或者资金费率、未平仓合约不降反而在价格下跌中同步暴涨（说明杠杆又堆起来了），那就要重新警惕真正的踩踏风险。
Bottom line first: crypto's total market cap fell 3.47% in 24 hours, but institutional buying didn't budge — this looks like orderly deleveraging, not a panic flush.
Here's the evidence. The Fed's preferred inflation gauge, core PCE (a price index that strips out food and energy), came in at 3.3% annually for July — hotter than expected — cooling hopes for a September rate cut. That's the trigger behind the selloff. But at the same time, BTC spot ETFs (funds on regular stock exchanges that let everyday investors get bitcoin exposure) took in $314 million net on August 25 alone, marking a 7th straight day of inflows. ETH ETFs are on a 9-day inflow streak. Combined, the two have pulled in over $3.6 billion over the last 14 days. Money isn't heading for the exit.
Leverage indicators back this up: funding rates (the fee perpetual futures traders pay each other, a proxy for leverage heat) and open interest both dropped together — a pattern that usually signals traders voluntarily cutting risk, not a forced-liquidation cascade. The Fear & Greed Index still sits at 65 (Greed), meaning sentiment turned cautious but hasn't collapsed. On-chain data also shows large holders moving BTC and ETH off exchanges into cold storage over the past week, while stablecoin supply keeps expanding — both usually read as long-term money staying in the game.
Worth noting: BTC trades at $78,037 now, down just 1.2% in 24 hours and only 3.3% off its 7-day high — nowhere near a crash. Our own read on BTC spent late July into early August wavering between "cautiously bullish" and "neutral," largely hinging on whether ETF flows could stay positive. This 7-day inflow streak is a step toward confirming that institutional buying rhythm hasn't broken.
What would flip this call? If ETFs turn to sustained net outflows, or funding rates and open interest spike back up alongside falling prices — signaling leverage rebuilding — that's when real flush-out risk comes back into play.