Bitcoin's 28% Two-Year Gain Masks a 74% Wipeout Across Altcoins

Bitcoin rose 28% over two years, while the median mid-cap altcoin fell 74%, according to Glassnode and Bybit. Ethereum remained flat, and institutional inflows favored Bitcoin ETFs. Recent gains saw Bitcoin surpass $80,000, lifting broader market cap to $2.76 trillion, with Solana and other altcoins also rising.

Original reporting
Published Sep 21, 2026, 4:05 AM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Sep 21, 2026, 5:18 AM UTC. Informational, not investment advice.
How this was made
AlphAI summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
AlphAI market briefCrypto
Primary signal
$BTC-USD
Bullish
medium confidence
Mentioned
$BTC-USD · $ETH-USD · $SOL-USD
Relevance
7/10
AlphAI data visualization · based on finance.biggo.com
Decision brief

The 30-second read

$BTC-USDBullishLow
01

Why it matters

The data highlights Bitcoin's outsized role and suggests continued institutional preference for the flagship coin.

02

Market read

Investors should note the skewed returns toward Bitcoin when allocating to crypto assets.

03

What to watch

Leverage in meme tokens and limited Glassnode coverage may mask broader market dynamics.

Relevance 7/10Novelty 6/10Timing: recent days

Background

The article summarizes a Glassnode and Bybit report on crypto market performance over the past two years.

Company-level read

Ticker impact

$BTC-USDBullishMedium confidence
Context

Bitcoin rose 28% over the past two years while altcoins fell, highlighting its dominant role.

Expected impact

Potential modest upside as inflows continue, especially if altcoin rotation remains weak.

Evidence & confidence

The report shows a clear concentration of returns in Bitcoin, suggesting investors may favor it over riskier altcoins.

$ETH-USDNeutralMedium confidence
Context

Ethereum posted roughly flat returns over the same two‑year period, lagging Bitcoin's gain.

Expected impact

Limited upside unless altcoin rotation picks up, but institutional ETF outflows could pressure price.

Evidence & confidence

Flat performance and recent ETF outflows indicate weaker demand compared with Bitcoin.

$SOL-USDBullishMedium confidence
Context

Solana gained close to 20% after Bitcoin broke $80,000, showing occasional large‑cap altcoin rallies.

Expected impact

Short‑term rally possible; watch for sustained Bitcoin strength to confirm.

Evidence & confidence

Recent 20% gain tied to Bitcoin's move suggests Solana reacts to top‑tier crypto momentum.

Market effects

Concentration in Bitcoin may deter capital allocation to mid‑cap altcoins, affecting the broader crypto sector.

US‑based institutional inflows into Bitcoin ETFs reinforce the dominance of Bitcoin globally.

The divergence shapes investor risk appetite across all digital assets.

Counterpoint

If altcoin rotation accelerates, mid‑cap tokens could rebound sharply, challenging Bitcoin's dominance.

Key entities

  • Glassnode

    Provider of blockchain data used in the report.

  • Bybit

    Co‑author of the market performance report.

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