Market signals from past cycles are flashing again—and altcoins could be next in line for explosive growth.
In July 2025, the crypto market is once again showing signs of a familiar pattern—one that has preceded major altcoin rallies in past cycles. A key technical signal, the bearish MACD cross on Bitcoin dominance, has just occurred. Historically, this has served as the trigger for “Altseason,” a period during which capital rotates aggressively from Bitcoin into alternative cryptocurrencies (altcoins), generating parabolic returns in a short timeframe.
This signal occurred in 2017, again in 2021, and now seems to be repeating in 2025.
What Is Bitcoin Dominance and Why the MACD Cross Matters
Bitcoin dominance measures the percentage of the total cryptocurrency market capitalization that belongs to Bitcoin. When dominance drops, it generally implies altcoins are gaining traction and growing faster than Bitcoin.
The MACD (Moving Average Convergence Divergence) indicator is a popular momentum oscillator. A bearish cross occurs when the MACD line (usually in white) crosses below the signal line (usually in orange), signaling a potential shift in trend—from strength to weakness.
In the chart you provided, we observe clear bearish MACD crosses in early 2017, late 2020, and now in mid-2025. Each of the previous events preceded a period where altcoins significantly outperformed Bitcoin. If history is any guide, another such cycle is now beginning.
Historical Context: When This Happened Before
2017 Altseason:
After Bitcoin dominance dropped from over 90% to below 40%, altcoins like Ethereum, XRP, and Litecoin surged by more than 1,000% within a matter of months. The MACD cross on the dominance chart happened early in the year, just before the flood of capital rotated into alts.
2021 Echo Rally:
Bitcoin dominance again peaked around 70% in January 2021, then rapidly fell to below 40% by May. Altcoins like Solana, Cardano, and Binance Coin exploded during this time. The MACD signal mirrored the one from 2017, with the same downstream effect.
2025 Setup:
In the 2024–2025 cycle, Bitcoin has reached new highs—over $120,000 according to 99Bitcoins. But now, with Bitcoin dominance topping near 55% and the MACD turning bearish, capital rotation appears to be underway.
What Makes 2025 Different—and What Stays the Same
While every crypto cycle is unique, 2025 shows several repeating dynamics:
Macro Liquidity Tailwinds: Unlike the rate hike environment of 2022–2023, central banks are now gradually loosening policy, injecting liquidity back into risk markets.
Institutional Maturity: With Bitcoin ETFs by BlackRock and Fidelity now holding billions, institutions are expanding exposure beyond BTC and into blue-chip altcoins.
Regulatory Clarity: The 2025 U.S. “Crypto Clarity Act” has provided legal frameworks for Ethereum, Solana, and others to operate as non-securities, opening the door for large fund flows.
However, 2025 also presents new dynamics:
AI-driven speculation: Many of the new altcoins are now built around AI, DePIN, and decentralized cloud infrastructure (e.g. Render, Fetch.ai).
Ethereum Layer-2 dominance: Optimism, Arbitrum, and Base have become dominant platforms for new altcoin issuance, leading to faster capital distribution away from BTC.
Risks: Not Every Altcoin Will Fly
While altseason typically brings euphoric returns, it’s essential to recognize the speculative excess that accompanies it. Many coins surge with little real utility, and late entrants often suffer significant drawdowns.
In 2018, post-altseason, Ethereum fell from $1,400 to $85.
In 2022, following the DeFi/NFT mania, Solana dropped over 90%.
Therefore, while the MACD signal is a compelling technical cue, it should be paired with due diligence, especially in an environment where macroeconomic and regulatory shifts are ongoing.
Outlook: Altseason or Not, Rotation Has Begun
Based on historical data, the MACD bearish cross on Bitcoin dominance is not just noise—it has preceded major market rotations in every previous cycle. Combined with the current macro backdrop and growing institutional engagement, this signal is gaining traction as a legitimate harbinger of what may be a strong altcoin rally.
The top gainers of this cycle might not be yesterday’s favorites. Investors should watch for volume surges, real developer activity, and early listing interest on centralized exchanges as signals for the next leaders.
Final Takeaway
The 2025 bearish MACD cross in Bitcoin dominance could mark the beginning of a new altseason, much like in 2017 and 2021. While it’s no guarantee, the confluence of historical pattern, macro tailwinds, and rising institutional interest sets the stage for potentially parabolic returns across the altcoin space.
As always, timing is key—and those who recognize early signals stand to benefit the most.
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