Meme coins have experienced a significant downturn in 2025, losing $86 billion in market value, with the sector now valued at $41.61 billion as of December 18. The latest weekly market report highlights notable declines in major meme coins, with Dogecoin (DOGE) and Shiba Inu (SHIB) dropping 6.3% and 10.9%, respectively. Meanwhile, Pump.fun (PUMP) saw a sharp decline of 28.2%. Despite the overall negative trend, some meme coins have bucked the trend, with Pippin (PIPPIN) and Memecore (M) recording gains of 30% and 8.7%, respectively. The market's fear and greed index remains in the 'extreme fear' zone, indicating persistent volatility and investor caution in the meme coin sector.