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AI · よくある質問AI Agents vs Agentic AI: What's the Difference Between the Two Terms?
An AI agent is usually the system that does the work; agentic describes how autonomously it plans, acts and adapts. Definitions differ by source, so here is a side-by-side comparison and a practical checklist.
8分閲覧 13
AI · トレンドWhy Is OpenAI Losing Money? How to Read OpenAI Losses, Revenue and AI Compute Costs
Reported audited figures show OpenAI earned about $13 billion in 2025 while spending about $34 billion. Training compute (R&D) and inference compute (cost of revenue) drive the gap, and run-rate headlines need careful reading.
6分閲覧 93
投資ガイド · よくある質問What Is a Pension Savings Trust in Korea? What Existing Holders Should Know and How to Transfer
Korea's bank-run pension savings trusts closed to new buyers in 2018, but trillions of won still sit in legacy accounts. Here is what those accounts protect, how their returns compare, and how the tax-neutral transfer process works.
7分閲覧 13
投資ガイド · トレンドCovered Call ETFs vs Nasdaq-100 ETFs for Retirement Income: Monthly Payouts or Growth?
High monthly payouts or long-term growth? As of October 2026, we compare covered call ETFs with a sell-what-you-need Nasdaq-100 ETF strategy using fund disclosures, a worked withdrawal example and the tax trade-offs.
6分閲覧 25
投資ガイド · よくある質問Pension Savings Account Korea No Income: Should Homemakers and Non-Earners Open One?
Korean residents without wage or business income cannot use the pension savings tax credit, but the account still defers tax on gains, taxes pensions at 3.3-5.5%, lets uncredited principal out tax-free and allows a later credit conversion. Rules as of October 2026.
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投資ガイド · 基礎What to Do in a Stock Market Crash: Bear Market Recovery Times and Rules to Follow
Since 1950, the median S&P 500 bear market took about two years to get back to its prior peak, but three took more than five years. Here is how to read recovery data and which rules to set before the next crash.
8分閲覧 31
投資ガイド · 基礎Bond ETF Losses Explained: Interest Rates, Duration and How Bond ETF Returns Work
Why can a Treasury bond ETF fall 30% in a year? A plain-English guide to interest rate risk, duration, total return and the difference between owning a bond ETF and holding individual bonds to maturity, using fund data as of October 2026.
6分閲覧 11
投資ガイド · よくある質問How to Calculate Compound Interest in Excel: FV Function and Compound Interest Calculators
An online compound interest calculator and Excel's FV function run the same math. Learn the inputs, the sign convention, annual vs monthly compounding and how to turn a pre-tax result into a realistic number.
6分閲覧 7
暗号資産 · 基礎What Is an Ethereum Upgrade (Hard Fork)? How Network Updates Affect Users and Price
An Ethereum upgrade is a planned hard fork that switches every node to new rules at once. Here is how upgrades are decided, where Glamsterdam stands as of October 2026, who needs to act, and what upgrades do and do not tell you about ETH price.
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