Investing– category –
Independent explanations of investment mathematics, funds, valuation and technology, with transparent calculations and primary sources. Choose a starting point below.
Getting started: A practical first-month investing plan · Investing small amounts and managing fees
Understanding returns and risk: CAGR versus average returns · Leverage, margin and daily reset
Technology and market flows: AI data centers and electricity demand · Memory stock buybacks and index flows
Memory companies and AI economics: HBM, DRAM and NAND company map · Five tests for a memory supercycle · AI capex, depreciation and cash flow
Decisions when stocks disappoint: Why good earnings can send a stock lower · The break-even trap before averaging down
Check the assumptions behind each example. Product availability and tax treatment depend on your country and account.
-
FNGU Is an ETN, Not an ETF: Issuer Risk, Calls and the 2025 Ticker Change
FNGU’s issuer risk, call terms and indicative-value premiums explained. Follow the2025 FNGU/FNGA/FNGB changes by CUSIP and see why an indicative-value gain can still leave a trading loss. -
Kioxia Q2 Earnings Deep Dive: NAND Prices, Long-Term Agreements and Cash Flow
Record earnings can be uncomfortable news for a memory investor. The numbers look extraordinary, but the questions remain: Is this a new earnings base, or th... -
TQQQ and SOXL Together: Portfolio Overlap and Hidden Concentration
TQQQ and SOXL together: calculate shared Nvidia, Micron and AMD exposure, daily leverage and account losses using aligned official index weights. -
SOXS Reverse Splits Explained: Share Count, Cost Basis and Charts
Understand SOXS reverse splits with original examples of shares, cost basis, adjusted charts and cash in lieu. Separate a higher quote from a real recovery. -
SOXL vs SOXX vs SMH: Nvidia, TSMC and Memory Stock Exposure
Compare SOXL, SOXX and US-listed SMH by benchmark, Nvidia, TSMC and memory holdings. Original diagrams separate actual weights from daily leverage exposure. -
TQQQ Costs Explained: Expense Ratio, Financing and Swaps
Understand TQQQ’s expense ratio, financing and swap costs with issuer disclosures, a rate-sensitivity example and checks that avoid double counting. -
JEPQ vs QQQM: Income Distributions or Selling Shares for Cash?
JEPQ distributions or QQQM share sales? Compare equal spending, assets left, total return and sequence risk with issuer disclosures and original cash-flow diagrams. -
Why Treasury ETFs Can Fall After Fed Rate Cuts: TLT, IEF and SGOV
Compare TLT, IEF and SGOV with original duration examples. Learn why Fed cuts, long yields, distributions and currency can produce different Treasury ETF returns. 広告
-
TQQQ Plus Cash vs QLD: Why the Same Starting Exposure Can Drift
Compare TQQQ plus cash with QLD using equal starting exposure. Worked examples explain allocation drift, daily rebalancing, cash income and the limits of an ideal 2x match. -
AI Cloud Backlog Explained: RPO, Revenue and Cash Flow
Read AI cloud backlog without confusing RPO, revenue and cash. Original diagrams explain recognition timing, prepayments, GPU funding and what investors should check. -
What Is KV Cache? AI Inference Memory, HBM, DRAM and SSD Demand
Calculate KV cache memory and see how context, concurrency, GQA and offloading affect HBM, DRAM and SSD demand—without turning capacity into a stock forecast. -
ETF Limit vs Market Orders: Bid-Ask Spreads, Premiums and Trading Costs
You picked a low-cost ETF. The broker charges no commission. Then a volatile session leaves your purchase price higher than the quote you thought you saw. Wh...
