Bitcoin ETFs Soar to Best Month in 2026 Amid Cryptocurrency's Strong August

US-listed spot Bitcoin exchange-traded funds (ETFs) had their best month of 2026 in August, mirroring a strong performance by Bitcoin. The cryptocurrency gained about 25% in August, its strongest monthly gain since November 2024.

According to SoSoValue data, Bitcoin ETFs attracted $3.52 billion in net inflows in August, the highest monthly total of 2026 and a significant increase from just $172 million in July. This influx of capital reduced year-to-date outflows by about 66% to $1.77 billion.

The funds recorded net inflows on 16 of 21 trading days in August, including nine consecutive sessions from August 17 through August 27. Total net assets rose to $99.61 billion at the end of August from $76.29 billion at the end of July, an increase of about 31%. Monthly trading volume climbed nearly 49% to $58.63 billion from $39.37 billion.

However, September started with a reversal, as Bitcoin ETFs saw net outflows of $236.46 million on Tuesday, following a day of inflows. This followed a brief drop in Bitcoin's price below $77,000 on Tuesday, after trading above $80,000 in late August.