Bitcoin spot ETFs have experienced a rollercoaster week of inflows and outflows, largely driven by investors reacting to shifting macroeconomic cues. However, a renewed wave of optimism has swept through the markets following the US Federal Reserve’s decision to leave interest rates unchanged. This move appears to have reassured investors and reignited institutional appetite for BTC-backed funds. Bitcoin ETFs Bounce Back The week started strong. On Monday, inflows totaled $425.45 million across BTC spot ETFs. Yet, this bullish momentum was interrupted on Tuesday as institutional investors pulled capital from the market ahead of the Federal Open Market Committee (FOMC) meeting. The pullback resulted in net outflows of $85.64 million. However, the trend shifted on Wednesday, thanks to the Fed’s decision to hold interest rates. The announcement triggered a sharp rebound in investor confidence, fueling fresh inflows of $142.31 million into BTC ETFs. Total Bitcoin Spot ETF Net Inflow. Source: SosoValue On May 7, Ark Invest and 21Shares’ ARKB recorded the largest single-day inflow, totaling $57.73 million, bringing its total cumulative net inflows to $2.68 billion. The second-largest daily inflow was recorded by Fidelity’s FBTC, which saw $39.92 million enter the fund. FBTC’s total historical net inflows now stand at $11.64 billion. According to SosoValue, no fund recorded a net outflow on Wednesday. Options and Futures Signal Bitcoin Bulls in Control The renewed optimism extends beyond inflows into ETFs. BTC is up 2% over the past 24 hours, and currently trades at $98,888. This price surge is accompanied by a positive funding rate, indicating an increase in leveraged long positions. Bitcoin Funding Rate. Source: Coinglass At press time, this is at 0.0042%. The funding rate is a periodic fee exchanged between long and short positions in perpetual futures contracts to keep prices aligned with the spot market. When positive like this, traders holding long positions pay shorts, indicating that bullish sentiment dominates the BTC market. However, it is key to note that despite this, BTC’s futures open interest has fallen by a modest 0.18% over the past day. This suggests that while traders are largely optimistic, some leveraged positions may have been closed, possibly to take profit as BTC soars. BTC Futures Open Interest. Source: Coinglass Meanwhile, traders have also caught the bullish virus in the options market. The demand for call options has surged, exceeding puts, indicating that traders are increasingly positioning for the upside. BTC Options Open Interest. Source: Deribit These trends suggest a growing conviction that BTC could break higher if macro conditions remain favorable.