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2. Profit Performance: Affected by weak insurance business, fourth-quarter operating profit fell by 29.5% year-on-year to $10.2 billion. Among them, insurance underwriting profit plummeted by 54%, and insurance investment income also declined by nearly 25%. 3. Capital Allocation: Despite the mediocre performance during the quarter, Buffett still refused to repurchase his own company's shares. Although the company's cash reserves slightly decreased from the previous quarter's historical high, they still reached $373.3 billion. 4. Historical Performance: In 2025, Berkshire's stock price rose by 10%. Although it lagged behind the S&P 500 Index, its cumulative increase since 1965 has exceeded 6,000,000%, demonstrating the miracle of compounding returns across eras. Expand

The project aims to integrate humanoid robot technology into existing automotive mass production lines, while also exploring more application scenarios in battery and component manufacturing. The robot supplier for this collaboration is the Swedish company Hexagon, which BMW Group refers to as a "long-term and stable partner." Expand

According to Odaily, Vitalik posted on X stating that Ethereum has been discussing account abstraction (AA) since early 2016. Now, EIP-8141 has been introduced as a comprehensive proposal aimed at addressing all remaining issues related to AA. The core concept of this proposal is "frame transactions," where a transaction contains N calls that can read each other's call data and can authorize both the sender and the gas payer. This mechanism supports multiple use cases: ordinary account transactions (such as multi-signature, variable keys, and quantum-resistant signature schemes) are completed through verification frames and execution frames; when paying gas fees with non-ETH tokens, it can be achieved through a payment master contract without any intermediaries; in terms of privacy protocols, it can be implemented by verifying ZK-SNARKs or adding two-dimensional random numbers through payment contracts. In terms of security, at the on-chain level, transactions are only valid when the verification frame returns ACCEPT with the gas payment flag; at the mempool level, conservative rules will be adopted initially, with gradual expansion later. EIP-8141 is highly complementary to FOCIL, with FOCIL ensuring rapid transaction inclusion and AA ensuring that complex operations can be executed directly as first-class transactions. The proposal is also discussing EOA compatibility, which is theoretically feasible. After more than ten years of research, these technologies are expected to be implemented within a year through the Hegota fork.