According to Michaël van de Poppe (@CryptoMichNL), altcoins have shown minimal price movement over the past three months and are currently retesting previous lows. This pattern suggests continued accumulation opportunities for traders as no significant trend reversal has been observed (source: Twitter). For portfolio management, maintaining current positions without major adjustments is advised until a clear breakout occurs. The retesting phase is often seen as a potential setup for a larger bullish move, making this a critical period for altcoin investors to monitor price action closely and manage risk accordingly.