The Bitcoin ($BTC) perpetual futures market is witnessing remarkable growth. In this respect, the $BTC perpetual futures have jumped by 2% across all crypto exchanges. As per the data from Glassnode, this development parallels Bitcoin’s bounce back to $90K mark. This combination underscores the rising bullish momentum in the market in December’s final weeks.

Bitcoin Futures Open Interest and Funding Rates Spike

In line with the exclusive market statistics, Bitcoin ($BTC) is experiencing a considerable rise in the perpetual futures sector. Particularly, this market has surged from 304,000 $BTC to nearly 310,000 $BTC, indicating a 2% increase. This massive increase presents an optimistic market outlook. At the same time, the leading cryptocurrency has reclaimed the $90K figure, strengthening the speculation of a price action while 2025 is entering its last weeks.

With price back above $90K, perpetual open interest has risen from 304K to 310K BTC (~2% increase), while the funding rate has heated up from 0.04% to 0.09%.

This combination signals a renewed buildup in leveraged long positioning, as perpetual traders position for a potential… pic.twitter.com/uQNqo3O9U0

— glassnode (@glassnode) December 22, 2025

Apart from that, the perpetual funding rates have also gone through a sheer spike from 0.04% to the exclusive 0.09% spot. This highlights the buildup of long positions with significant leverage. Along with the latest price recovery, this positive market scenario suggests that the Bitcoin ($BTC) traders are showing great confidence in the flagship crypto asset’s potential to sustain increased levels.

Meanwhile, the shift in perpetual funding rates from neutral to considerably positive signifies a relatively bullish sentiment. Hence, the rise to 0.09% points out the willingness of traders to recompense a premium to maintain long positions. The respective dynamic often occurs during phases of increased optimism as well as leverage buildup.

$BTC Traders Maintain Longs, Eyeing Year-End Rally Amid Rebound to $90K

According to Glassnode, the growing funding rates and open interest point toward the renewal of the investor interest in Bitcoin perpetual futures. Specifically, the traders are now betting on additional upside. So, while Bitcoin has reclaimed $90K in price, they are likely anticipating a price breakout above the resistance zone of $95K. Together, all these indicators display a bullish momentum, leading toward likely volatility along with likely decisive moves. Keeping this interplay between funding rates and open interest, the market participants are closely watching Bitcoin while it navigates 2025’s final stretch.