Michael Saylor of Strategy said on December 16 that he is still bullish on Bitcoin, BlockBeats reported. Last week, Strategy bought 10,645 Bitcoin for about 9.803 亿美元 at 92,098 美元. As of December 14, 2025, it held 671,268 Bitcoin, with total cost about 503.3 亿美元 and per‑coin cost about 74,972 美元.

On Dec. 16, several major whales on Hyperliquid adjusted leveraged positions amid a sharp pullback, Coinbob's popular address tracker shows. "pension-usdt.eth" opened a new 3x BTC long at 00:00 with about $85.76M exposure at a $86,300 average, becoming Hyperliquid's largest BTC long after about $2.8M profit from four round trips yesterday. "Calm Opening King" opened BTC/ETH/SOL longs over the past 6 hours totaling $7.11M with about $20,000 in unrealized losses, and fully closed BTC/ETH/SOL shorts at 01:00 for roughly $13,000 in realized profit; "Ultimate Short" closed about $8.6M BTC shorts for $2.37M profit, leaving $61.88M in remaining BTC shorts with $18.46M unrealized gains (542%), a liquidation price of $104,000 and additional sell orders down to $68,000, ranking second on Hyperliquid's BTC short leaderboard. Trader "Paul Wei" executed four BTC long entries from last night to this morning, now down about 7% on a position representing around 15% of a $100,000 account with most capital in resting orders between $84,800 and $93,300, and has accumulated $3,100 in profit since Nov. 16; the "BTC OG Insider Whale" saw unrealized losses widen, with ETH longs down $40M (-37%) at a $3,167 average on roughly $564M, while BTC and SOL longs are also underwater, bringing total positions to about $680M and placing the address atop Hyperliquid's ETH long leaderboard.

The Bank of Japan is expected to maintain its pledge to keep raising interest rates at next week's policy meeting, while emphasizing that any additional moves will depend on how the economy responds to each hike, BlockBeats reported on December 12, citing three unnamed sources. BOJ Governor Kazuo Ueda has effectively signaled a December rate increase, and markets have almost fully priced in a move from 0.5% to 0.75%, with focus now on how far the central bank can lift rates toward a neutral level. The sources said the BOJ may internally revise its estimate of how far the current policy rate is from the neutral rate but will avoid using that estimate as its main communication tool for the future tightening path because of forecasting challenges. Instead, the BOJ will explain that upcoming decisions will be guided by how past hikes have affected bank lending, corporate funding conditions and other economic activity, with one source saying Japan's very low real interest rates allow the central bank to proceed with rate hikes in several stages, a view shared by the other two sources.

A wallet described as a "BTC OG insider whale" transferred 5,152 BTC, valued at about $476.68 million, to a new address on December 12, BlockBeats reported citing Onchain Lens. The on-chain move was detected roughly five minutes after execution, and all funds were consolidated into the single newly generated wallet.

BTC OG insider whale continued to add to a 5x leveraged ETH long position in the past 30 minutes, taking the holding to 151,094.5 ETH (约 4.92 亿美元) on December 12, according to Hyperinsight. The average entry price is 3185.05 美元, and the unrealized profit per coin is 1050 万美元, Hyperinsight said.

On December 12, Anza's Vice President of Core Engineering Brennan Watt said at the Solana Breakpoint conference that proposal SIMD-0389 is designed to reduce Solana account creation rent by 10x, with potential to expand the cut to 100x, BlockBeats reported. In the Solana network, Account Rent is a storage fee required to keep an account's data permanently on-chain. Anza's analysis of the safety slowdown mechanism, which was discussed recently at SolanaConf, indicates the change could unlock broader adoption by reclaiming hundreds of millions of dormant SOL while maintaining network security.