Coinbase Bitcoin Premium has just flipped positive after months of Korean-driven selling pressure. US spot buying is visibly waking up while BTC consolidates tightly around $90K–$92K. Historically, sustained green premium has preceded violent short squeezes and altcoin rotations.
Veteran macro analyst TT Tech (@TTTech_PL) lit up crypto Twitter on November 29, 2025 with a simple but explosive observation: the Coinbase Premium Index has flipped green for the first time since early October.
After weeks of brutal negative readings — driven almost entirely by Korean retail panic on Upbit — the premium that measures the price gap between Coinbase (US/institutional) and Binance (global/retail) is finally back above zero while Bitcoin defends the psychological $90K zone.
“This setup tells me:
- •US spot selling is fading
- •Fresh US bids are starting to show up
- •If the premium holds, it often front-runs stronger, spot-driven reversals,” TT wrote.
The attached charts tell the story perfectly. The Coinbase Premium spent most of Q4 2025 in deep red territory, reflecting relentless distribution from U.S. holders into Korean strength. Now the script is flipping: Korean volume is drying up, Upbit’s infamous “kimchi premium” has collapsed, and Coinbase order books are stacking aggressive spot bids.
The timing couldn’t be more critical. Bitcoin is coiling in an ultra-tight range around $90K–$92K with funding rates near zero and open interest at multi-month lows — classic ingredients for a violent move. A sustained green premium has historically been the spark that turns these consolidations into 20–40% squeezes within days.
Perhaps most importantly for altcoin holders, every major green-premium episode in 2024 and early 2025 (March, July, October) marked the exact moment capital began rotating out of Bitcoin and into alts. With BTC dominance already showing signs of a double-top near 62%, the return of U.S. spot demand could be the final catalyst altseason has been waiting for.
Bottom line from TT Tech: “I will keep tracking this in real time. Turn on notifications if you want more data-based signals like this.” One metric just flipped. The buyers wearing stars and stripes are stepping back in — and they usually don’t arrive quietly.