The Ethereum price struggles to hold above $2,700 despite recent bullish momentum.Blockchain analytics firm Glassnode's on-chain insights indicate a significant cluster of investor cost-basis distribution around $2,800.Investors acquired Ethereum around $2,800, leading to potential sell-side pressure at that price level.If Ethereum fails to break the supply barrier around $2,800, it could fall to the next support level at around $2,380.