TL;DR
- Bitfinex notes that 19 of the top 20 altcoins rose more than 12% between August 18 and 25, outpacing Bitcoin’s 21.4% gain.
- Spot Bitcoin ETFs recorded net inflows of $2.57 billion over seven consecutive positive sessions, absorbing nearly 28,000 BTC in five days.
- The rally was driven by aggressive spot buying and short covering, not leverage. Zcash led gains with a 50.9% surge.
Bitfinex published its weekly market analysis with a conclusion that sets the tone for the moment: the rally that took Bitcoin from the range lows to $81,300 was neither isolated nor coincidental, but rather the start of an advance that swept nearly the entire top of the altcoin market.
The report details how the ten-week range between $62,000 and $67,000 broke on August 19, when BTC posted a 11.7% jump over three sessions, the largest in more than a year, before continuing to a high of $81,300 on August 25, accumulating a gain of over 29.5% from the range lows.
What sets this moment apart from the May rally, according to Bitfinex, is its driver: aggressive spot buying rather than leveraged positioning, funded largely by spot Bitcoin ETFs in the United States. During the five sessions between August 17 and 21, ETFs absorbed $1.92 billion, with every single session finishing in positive territory.
BlackRock’s IBIT volume on the breakout day reached $4.4 billion, nearly five times its August average, which Bitfinex interprets as fresh institutional allocation rather than rotation from existing positions.
Bitfinex: The Altcoin Rally and the Role of ETFs
The most significant feature of the analyzed period was the breadth of the rally. Of the top 20 altcoins by liquidity, 19 posted gains above 12% between the close of August 18 and that of August 25. Zcash led the way with a 50.9% price surge, followed by Aave with 44.7% and XRP with 43.3%, whose rise coincided with a White House meeting held on August 19 in which Ripple and other companies met with the chairs of the SEC and the CFTC.
Hyperliquid set a new all-time high on the back of a 36.2% gain. Meanwhile, Ethereum rose 27.4% and improved its ratio against BTC on a sustained basis for the first time since spring.
Spot Ethereum ETFs received $692.6 million in the week through August 21, their largest weekly inflow since early October last year, with an additional $295.4 million recorded in the two following sessions. The market capitalization of the broader altcoin market as measured by the TOTAL3 index, which excludes BTC and ETH, grew 21% to $791.5 billion, its highest level in 203 days.
Potential Scenarios and Key Determining Factors
Bitfinex outlines three scenarios for the next two weeks: acceptance above the May ceiling if BTC closes two consecutive sessions above $82,818, consolidation between $77,100 and $81,000 as the base case, or a squeeze reversal if the price loses $76,657 on two consecutive closes.
Federal Reserve Chair Kevin Warsh‘s speech at Jackson Hole, scheduled for Friday, and the continuation of positive ETF flows are the two factors Bitfinex identifies as decisive in determining which of those paths the market takes.
