MCO｜Moody's Corporation 深度研究：雙寡頭信評帝國的嚴格測試
股價在跌，但評等量創歷史新高。Moody's 近六個月的修正，究竟是護城河受損的訊號，還是市場把短期宏觀壓力誤解為永久性損傷？五層護城河、三個最刁鑽的挑戰問題、完整財務分析。
US Stocks
IBKR Real-Time Market Data: The 4-Pillar Setup That Ends 15-Minute Delays
IBKR defaults to 15-minute delayed quotes — the yellow clock means stale data on every trade. This guide covers the 4-Pillar Setup ($6/month), FinOps commission offsets, the hidden cost of PFOF brokers, and options Level 3 permissions SOP for Day 1.
Palantir: Epic Earnings, Valuation Reckoning — You're Not Buying the Company, You're Buying Time Expectations
Palantir Q4 blowout: 70% revenue growth, Rule of 40 at 127%, NDR at 139%. Epic earnings, but also an epic valuation at 75x forward P/E. A 30% decline does not make it cheap — it makes it merely overpriced. Five bear arguments and five rational entry conditions explained.