Bitcoin gains 24% in August, its strongest monthly performance since 2017

Bitcoin closed August near $78,400, marking a roughly 24% gain for the month – the strongest August performance since 2017.

Key drivers of the rally

Spot ETF inflows

U.S. spot Bitcoin exchange‑traded funds attracted about $1.92 billion in net inflows during the five‑day period ending August 21, the largest weekly inflow since October 2025. Cumulative inflows reached roughly $2.72 billion by August 24, making August the strongest month for spot ETFs in 2026.

Short‑position liquidations

Crypto derivatives saw $6.55 billion in short‑position liquidations over two weeks, according to CoinGlass data. Total liquidations across the broader crypto market in the same period were $9.71 billion, with long positions accounting for $3.16 billion.

Market context

The rally lifted Bitcoin from around $63,000 in mid‑August to briefly above $80,000, a level not seen since May. The advance reversed much of the downward pressure recorded in the first half of 2026. Bitcoin’s three‑month return stood near 32% at the time of writing, contrasting with losses of about 22% in Q1 and 14% in Q2.

Macro backdrop

The U.S. Treasury announced an increase in long‑end bond buybacks, doubling the maximum purchase size from $2 billion to at least $4 billion per operation beginning September 9. While not a direct crypto policy, the move contributed to lower Treasury yields and a weaker dollar, which historically have supported risk assets such as Bitcoin and gold.

Outlook

Analysts note that Bitcoin must reclaim the $80,000 resistance level to sustain momentum. Upcoming catalysts include the September 4 U.S. employment report, the Treasury’s expanded buyback program, and the Federal Reserve’s September rate decision, which could influence dollar strength and risk‑asset demand.