Spot bitcoin exchange-traded funds surpassed their Ethereum counterparts in terms of investment flows on Tuesday.

According to SoSoValue data, spot bitcoin ETFs saw $332.7 million in net inflows on Tuesday, led by $132.7 million moving into Fidelity's FBTC and $72.8 million into BlackRock's IBIT. Funds from Grayscale, Ark & 21Shares, Bitwise, VanEck and Invesco also saw net inflows yesterday.

Meanwhile, spot Ethereum ETFs reported a total daily net outflow of $135.3 million. Fidelity's FETH saw $99.2 million in outflows and Bitwise's ETHW recorded $24.2 million in negative flows.

"The shift of ETF inflows from ETH to BTC suggests institutional investors may be rebalancing portfolios to capitalize on Bitcoin's perceived stability amid macroeconomic uncertainties," said Nick Ruck, director at LVRG Research.

Ethereum ETFs outperformed bitcoin ETFs in August, as analysts pointed to a "rotational shift" toward Ethereum, driven by its yield-generating capabilities, improving regulatory clarity, and growing corporate treasury adoption.

While bitcoin ETFs recorded a monthly net outflow of $751 million in August, Ethereum ETFs saw $3.87 billion flow into the funds during the period.

"In the short term, this could bolster bitcoin's price support near $108k and reduce selling pressure, though Ethereum's stronger yield prospects and Digital Asset Treasuries growth may sustain its outperformance into year-end," Ruck told The Block.

According to The Block's crypto price page, bitcoin rose 0.55% in the past day to $110,943 while Ethereum dropped 1% to trade at $4,327 as of 11:45 p.m. on Tuesday.