The yield of Ethereum in December became negative: price ~$2950-3000, below the level on December 1 (around $3200+ after November).
If the month ends in the red, it will be the 9th negative month in 2025 — a record series of negative months that last occurred only in the bear market of 2018 (when ETH fell by ~94% for the year).

ETH
2,819.06
-4.55%