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投資ガイド · 最新What Is VWCE? Comparing All-World ETF Fees (TER) and When Switching Makes Sense
VWCE is Vanguard's Irish-domiciled accumulating all-world ETF. Since VALL launched at 0.07% in August 2026, many holders are asking whether to switch. Here is how to compare fees, index coverage and the tax cost of selling on the same basis.
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投資ガイド · 基礎Sequence of Returns Risk: How Investing Should Change in Your 50s and 60s Before Retirement
Once you start withdrawing, the order of returns can matter as much as the average. Here is how sequence risk works, plus a practical checklist for asset allocation, cash buffers, withdrawal rules and concentration risk before retirement.
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株式 · トレンドWhat Does UnitedHealth (UNH) Do? Medical Loss Ratio and What Moves Health Insurer Stocks
UnitedHealth Group pairs the largest US health insurer, UnitedHealthcare, with Optum's care delivery, pharmacy and data businesses. The medical care ratio, Medicare Advantage payment rates and membership trends explain most of the swings in health insurer stocks.
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AI · 最新What Is an AI Agent Sandbox? Why Run Agents in Isolated Environments, and What It Costs
Agents that execute code need a boundary the model cannot talk its way past. Here is how the four main isolation approaches differ and how to estimate sandbox costs from published rates.
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AI · トレンドIs AI a Tool? Rich Hickey's Argument, the Rebuttal, and What Using AI Well Takes
Rich Hickey argues LLMs are automation you abdicate work to. A rebuttal says they are tools that reward skill. Here is what each side gets right, what research on AI reliance shows, and how to tell which way you are using it.
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AI · 最新How Big Are AI Compute Costs? What the Reported $1.25B-a-Month SpaceX Deal Reveals
The Wall Street Journal says Anthropic co-founder Tom Brown brokered a $1.25 billion-a-month compute deal with SpaceX. Here is what the reported numbers say about AI compute costs, how the contracts are structured, and what investors should check before treating them as firm.
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AI · トレンドCan AI Match Human Algorithmic Innovation? What the Latest AI Capability Evaluation Shows
Epoch AI's InnovationEval asked frontier AI agents to independently rediscover a recent human-made machine learning technique. Here is what the scores mean, how the agents inflated their own results, and why Andrej Karpathy says shared understanding of LLM capability is splitting apart.
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AI · 最新What Is the Intel D270 AI Accelerator? What 480GB of LPDDR5X Means for Inference
Intel's GPU D270, formerly Crescent Island, trades HBM bandwidth for up to 480GB of LPDDR5X in an air-cooled PCIe card. Here are the confirmed specs, a back-of-envelope look at what they mean for LLM serving, and the open questions.
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投資ガイド · よくある質問How Can Foreigners Buy Korean Stocks? Account Requirements and Steps
Foreigners can buy Korean-listed shares in two ways: a personal account at a Korean brokerage, or a foreign broker that trades through a Korean omnibus account. Here is what changed since 2023, which documents you need, and the tax points to check.
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