The US Bitcoin Spot ETFs have been one of key bullish drivers of the present market cycle, heralding an influx of institutional investors into the BTC ecosystem. In 18 trading months, these ETFs have acquired 6.25% of the Bitcoin market cap cementing their status as a major force in the market. Interestingly, prominent market analyst Axel Adler Jr. has pointed to a recent positive trend within the Bitcoin ETF space, suggesting further upside potential and a bullish outlook for the months ahead. Bitcoin Spot ETFs To Hold 1.2 Million BTC By September – Analyst In an X post on June 28, market analyst Axel Adler Jr. highlighted a compelling trend in the accumulation pattern of US Bitcoin Spot ETFs over the past three months. The renowned analyst explains that assets under management (AUM) i.e. net assets of these ETFs excluding the Grayscale GBTC have grown significantly from 932,000 BTC in April 2025 to 1,056,000 BTC today. This development represents a net gain of 124,000 BTC over 87 days, averaging an impressive inflow of 1,430 BTC per day. As the undisputed market leader, the BlackRock IBIT accounts for the majority of this growth attracting 118,000 BTC i.e. 1,360 BTC per day in deposits. In contrast, the remaining 11 ETFs contributed a combined total of 6,000 BTC, or 70 BTC per day, indicating a clear concentration of investor interest around BlackRock’s product.According to Adler Jr., if institutional investors maintain the current accumulation pace of 1,430 BTC per day, these Bitcoin ETFs are on course to hit an AUM of 1,840,000 BTC by September, representing 9.25% of the circulating BTC tokens. Within that total, BlackRock IBIT is expected to hold an estimated 817,000 BTC. When combined with GBTC’s current AUM of $19.79 billion, Adler Jr.’s predictions mean the US Bitcoin Spot ETFs would hold net assets valued significantly over $197.54 billion. Bitcoin Price Overview At the time of writing, Bitcoin trades at $107,339 reflecting a minor price growth of 0.28% in the past 24 hours. Meanwhile, the asset’s daily trading volume is down by 33.88% and valued at $30 billion. On larger time frames, the premier cryptocurrency also maintains a positive performance with gains of 5.61% and 1.06% on the weekly and monthly chart respectively, indicating a potential bullish momentum shift following weeks of range-bound movement. Since establishing a new all-time high of $111,970 in late May, Bitcoin has struggled to explore new price territory, instead settling into a descending channel between $100,000 and $110,000.
