#coinbase #altcoins #TrendingTopic

Coinbase’s latest Monthly Outlook says market conditions “now suggest a potential shift towards a full altcoin season as we approach September,” citing falling Bitcoin dominance to about 59% and a 50% jump in altcoin market cap since early July.

The call was amplified on Coinbase Institutional’s social channels, reinforcing that macro easing and returning liquidity could be catalysts for a broader altcoin outperformance phase next month

Meanwhile, U.S. spot Ether ETFs recorded a roughly $729M daily net inflow this week, one of the biggest since launch, keeping ETH near cycle highs and anchoring the rotation narrative around Ethereum leadership.

After setting a record above $124,000 on Aug 14, Bitcoin retreated toward $119,000 amid shifting policy headlines and profit-taking, while the broader setup remained constructive for altcoins on declining BTC dominance.

What this means:

Early-stage rotation: Historical cycles often progress from BTC strength to ETH leadership, then broader altcoins; today’s ETH ETF inflows and weaker BTC dominance fit that pattern.

Watch the triggers: Continued ETH ETF net inflows and further slippage in BTC dominance are key signals for an altseason acceleration into September.

Risk management: Pullbacks like BTC’s move to ~$119K can interrupt momentum; liquidity tends to concentrate first in large-cap alts before filtering to mid/small caps.

Actionable angles:

Track daily ETF flow prints for ETH versus BTC to gauge leadership persistence.

Monitor BTC dominance and altcoin market-cap breadth as rotation barometers.

Focus on liquid large caps and ETH/L2 ecosystems initially; breadth typically expands later in the rotation

$BTC

$ETH