Key TakeawaysUS spot Bitcoin ETFs attracted nearly $1 billion in inflows last week.Friday alone saw $663 million in inflows, the strongest day since mid-January.Bitcoin remains above $75,000 despite geopolitical tensions and DeFi-related stress.The Kelp DAO exploit triggered losses across Aave and broader DeFi markets.Rising short positions could set up a potential short squeeze if Bitcoin remains stable.Bitcoin ETF Demand Remains StrongBitcoin continues to benefit from strong institutional demand through spot ETFs.US-listed spot Bitcoin ETFs recorded approximately $663 million in inflows on Friday alone, the largest daily inflow since January 15.Weekly inflows totaled roughly $996 million, up from $786 million the week before.The consistent rise in ETF demand suggests that institutional investors continue to accumulate Bitcoin even as broader macro risks remain elevated.Bitcoin Holds Above $75KBitcoin is currently trading just above $75,000 after briefly climbing above $78,000 last week.The pullback came as markets reacted to renewed concerns around Iran, shipping disruptions in the Strait of Hormuz and broader geopolitical uncertainty.Despite these pressures, Bitcoin has remained relatively stable compared with previous periods of risk-off sentiment.Kelp DAO Hack Weighs on DeFiThe weekend exploit involving Kelp DAO continues to affect the DeFi sector.The hack created significant stress for Aave after attackers used stolen rsETH as collateral to borrow funds.As a result:Aave lost billions in total value lockedStablecoin liquidity tightenedThe AAVE token fell toward $90Aave is down around 1% on the day, although DeFi’s share of the total crypto market has remained relatively stable at around 3%.Traders Are Building Short PositionsWhile ETF inflows remain strong, derivatives data suggests traders are still positioning cautiously.Short positions continue to build across the market, with many traders betting that Bitcoin will fail to sustain a breakout above recent highs.This could create the conditions for a short squeeze if Bitcoin remains above key support levels.A sustained move above $76,000 could force bearish traders to cover positions, potentially driving prices higher.Key Levels to WatchFor now, the main levels for Bitcoin remain:Resistance: $76,000 to $78,000Upside breakout target: $80,000Support: $72,000 to $73,000As long as ETF inflows remain strong and Bitcoin continues to hold above major support zones, the broader market structure remains constructive despite DeFi-related risks and geopolitical uncertainty.