Bitcoin’s Overnight Rebound Shows A Market Trading Policy Risk, Not Hype

Key Points

• Bitcoin rebounded toward $88,000 after a sharp dip, but remains capped beneath the $90,000 zone.
• ETF flows flipped from a large inflow to an outflow across two sessions, keeping the rally uneven.
• Ethereum led the bounce, while altcoins split into a few outsized winners and many double-digit losers.

Bitcoin traded back near $87,900 early on December 19 after a volatile prior session: an attempted push toward $90,000 failed, price dipped into the mid-$80,000s, then rebounded.

The daily candle was up roughly 2.9%. On perpetual venues, BTC was up about 1.4% on the latest four-hour window (about $6.8 billion in reported volume). ETH rose about 4.1% to around $2,950, while SOL hovered near $124 (+1.3%) and XRP near $1.87 (+1.5%).

The backdrop was policy uncertainty and macro positioning. U.S. sentiment softened after the Senate delayed a key crypto bill, and global markets also digested the Bank of Japan’s 25-basis-point hike.

WazirX’s Nischal Shetty said Bitcoin was “trading sideways below key resistance levels.” Cointelegraph quoted Kronos Research’s Vincent Liu calling ETF demand “early positioning,” and arguing bitcoin can trade like a liquidity proxy when rate expectations ease.

ETF data reinforced the stop-start feel. U.S. spot Bitcoin ETFs posted a net inflow of $457.3 million on Dec. 17 (IBIT +$391.5 million), then a net outflow of $161.3 million on Dec.

18 even as IBIT still added $32.8 million. U.S. spot Ethereum ETFs recorded a net outflow of $96.6 million on Dec. 18, driven largely by ETHA at -$102.2 million. Technicals also split by timeframe.

On the four-hour chart, RSI improved to about 52.3 and the MACD histogram turned positive. On the daily chart, RSI stayed weaker near 43.8 and MACD remained negative.

Resistance clusters around $88.7K–$89.7K and the $90K marker, with supports near $86.65K and $84.95K. Weekly RSI sat around 37.5, and analysis highlighted a large overhead supply band above roughly $93,000.

Altcoins showed selective risk appetite. Bitcoin Cash jumped about 10.4%, ZEC gained 4.8%, and UNI rose 5.5%. On the downside, PIPPIN fell 19.9%, FOLKS 18.9%, HMSTR 13.2%, and BEAT 9.8%.