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.

The US Bitcoin spot ETFs logged over $2 billion in net inflows last week, marking a three-week streak of positive momentum. Despite a bearish start to June, with $128.81 million in net outflows during the first trading week, investor appetite soon quickly rebounded. This turnaround has resulted in a cumulative $4.63 billion in deposits over the past three weeks. Bitcoin ETFs On Impressive 14-Day Positive Streak Despite Market Uncertainty On Friday June 27, the 12 US Bitcoin ETFs registered net inflows of $501.27 million bringing the aggregate deposits of the last week to a staggering $2.22 billion. According to data from ETF tracking site SoSoValue, the clean streak of daily inflows from last week extends the ETFs’ positive performance to 14 consecutive days. In analyzing individual ETF data from this week, the BlackRock IBIT registered $1.31 billion in net deposits solidifying its position as the market’s unrivalled leader. Meanwhile, Fidelity’s FBTC and Ark/21 Shares’ ARKB also experienced substantial cumulative inflows of $504.40 million and $268.14 million, respectively. Grayscale’s BTC, VanEck’s HODL, Valkyrie’s BRRR, Invesco’s BTCO, and Franklin Templeton’s EZBC also recorded moderate net flows ranging from $1million – $25 million. In familiar fashion, Grayscale’s GBTC produced the only net outflows losing $5.69 million in withdrawals, but still retains its position as the third largest Bitcoin ETF with $19.79 billion in net assets. Following this week, the US Bitcoin Spot ETFs have now recorded $4.50 billion in net flows in June signaling a resolute demand from institutional investors despite Bitcoin market troubles. Notably, the premier cryptocurrency has witnessed extensive corrections since hitting a new all-time high of $111,790 on May 22. Over the last month, BTC has made no new price discovery trading largely between $100,000 and $110,000 to form a descending price channel. While this price performance reflects a neutral market sentiment, the high influx of capital into the Bitcoin ETFs signal a long-term confidence by institutional investors on Bitcoin’s price appreciation prospects. Ethereum ETFs Log $283 Million In Deposit To Close Out H1 2025 In other developments, SoSoValue data also reveals that US Ethereum Spot ETFs notched up a cumulative inflow of $283.41 million over the last week extending their positive streak to seven consecutive weeks. In June alone, these ETFs saw total inflows of $1.13 billion, marking their largest monthly gain in 2025. As of the time of writing, the total net assets of the Ethereum ETFs stand at $9.88 billion, accounting for 3.37% of Ethereum’s market capitalization. Meanwhile, Ethereum continues to trade at $2,441 with Bitcoin prices set around $107,339.