Altcoins Near 2025 Cycle Low, Potential 600% Rally Ahead

Altcoins are currently positioned near a critical support level of 2.18 million BTC, according to a recent analysis shared on TradingView by @BitcoinSensus. The OTHERS/BTC index, which tracks the performance of altcoins relative to Bitcoin, has touched the lower channel of an ascending trendline, similar to patterns observed in 2017 and 2020. This setup has historically led to significant gains, with past bull market cycles seeing increases of over 11 million BTC.

The weekly logarithmic chart of the OTHERS/BTC index shows a clear ascending channel that has been in place since 2015. The index has touched the support line at three cycle bottoms: 2017, 2020, and 2025. The current value stands at 2.18 million BTC, and historical rebounds have pushed the index above 13 million BTC in prior cycles. If the pattern repeats, the implied move could be over 6x from the current position, suggesting a potential rally by 2027.

Market participants are closely monitoring whether altcoins will replicate past rallies or diverge under current macro conditions. The OTHERS/BTC index reflects the combined market capitalization of altcoins relative to Bitcoin, providing insights into altcoin dominance cycles. The chart highlights three notable cycle lows, each aligning with the lower boundary of an established channel. Previous bounce points in 2017 and 2020 share structural alignment and relative timing with the current 2025 pattern.

In 2017, altcoins surged after bottoming around 0.3 million BTC, peaking above 5.8 million BTC by early 2018. A similar setup unfolded in 2021, following a bottom near 1.1 million BTC, with a sharp rally above 11 million BTC. The 2025 pattern now echoes those moves, following a decline that touched the ascending base line for a third time. The chart’s upper trendline projects a potential resistance zone near 16 million BTC by late 2027 or early 2028, suggesting significant upside remains if historical behavior holds.

Social sentiment confirms anticipation for a major altcoin rebound. The tweet containing the analysis received substantial discussion in the crypto community, with traders and influencers reacting with optimism. Many pointed to the timing aligning with previous multi-year breakouts, suggesting a broader altseason may be approaching. Comments under the tweet asked which altcoins are best positioned for the rebound, while others cited 2025 as a key reset year. The enthusiasm is further confirmed by the chart’s viral spread, reaching analysts and content creators across various platforms.

Price action, volume build-up, and consolidation patterns among various altcoins also support the thesis. Many tokens have recently formed long-term bases and are now exhibiting breakout signs above key moving averages. Altcoins tend to outperform Bitcoin during market expansion phases, especially when Bitcoin’s dominance wanes. The current BTC dominance stands high, but a breakdown could redirect capital into smaller-cap tokens.

Several metrics now point to rising altcoin strength, including weekly momentum indicators and decreasing BTC dominance divergence. While Bitcoin remains the benchmark, traders are shifting focus toward emerging Layer 1s, gaming tokens, and DeFi protocols. If history repeats, altcoins could lead the next wave of crypto growth by early 2026. However, uncertainty remains around regulation, interest rates, and institutional behavior. The question now is whether altcoins will truly reclaim dominance or face fresh resistance in a changed market.