Wang Chun: Once transferred 500 BTC to verify if the private key was leaked, with a hacker moving 490 BTC out.

On December 21, according to monitoring from HyperInsight (via its Telegram channel @HyperInsight), “Big Brother” has closed out all long positions in BTC and HYPE, and partially closed its ETH long positions. Currently, “Big Brother” still holds a 25x-leveraged long position in ETH: the position size is 5,250 ETH, with an unrealized profit of $280,000 and a liquidation price of roughly $2,787.

December 21st: Per HTX market data, Ethereum has surged past the $3,000 mark, up 0.49% in the past 24 hours.

On December 21st, data from Alternative Data shows the cryptocurrency Fear and Greed Index stands at 20—unchanged from yesterday—signaling the market remains in "extreme fear" territory. Note: The index ranges from 0 to 100 and incorporates six key indicators: Volatility (25%), Market Volume (25%), Social Media Hype (15%), Market Surveys (15%), Bitcoin Dominance (10%), and Google Trends Analysis (10%).

On December 21, 10x Research released a note noting Bitcoin posted a sharp drop, driven by forced liquidations, stalled crypto legislation progress, fading corporate buying momentum, and global policy uncertainty weighing on risk appetite. U.S. stocks faced broad weakness fueled by underperforming AI stocks and soft labor data—but the downward trend was partially offset by easing effects from cooling inflation and strong gains in semiconductor firms. Gold prices rose, nearing record highs, supported by surging safe-haven demand and increased global inflows tied to diversified asset allocation. MicroStrategy’s stock weakened as concerns over equity dilution from its stock-based Bitcoin purchases outweighed the positive lift from its ongoing Bitcoin accumulation.

On-chain analyst Ai Yi (@ai_9684xtpa) reported December 21st that address 0x4F5…61177 has launched its fourth swing trade. Half an hour prior, the address pulled 2,000 ETH off Binance — worth $5.98 million — at a withdrawal price of $2,991.65. Its last trade wrapped up in a sharp downturn a month ago, marking the only loss this address has posted. Over 11 months, the address has netted $1.506 million from three ETH swing trades, with a 2-1 win-loss record.

As of December 21st, the probability of the prediction "Bitcoin will hit $100k again this year" on Polymarket currently stands at 10%. Additionally, the chance of it rising to $95k is 32%, while the likelihood of it dropping below $80k is 18%.