Solana (SOL) DeFi Tops $19B Amid Declining Yields As Taurox Turns AI Performance Into 80% Staker Gains

Solana's DeFi total value locked surged 65% from $11.5B to over $19B between December 2025 and March 2026, with JitoSOL holding over $2B. However, native SOL staking yields have declined for three consecutive months, dropping from over 8% to 5.9-7.5%.