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.
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Does Averaging Down Reduce Your Loss? A Worked Example
Averaging down can lower your average cost and loss percentage while leaving the dollar loss unchanged. Follow a $400-loss example, including cash and the next price move. -
Stock Market Anxiety: 5 Checks Before You Panic Sell
You check your portfolio before bed. It is down again. You close the app, then reopen it. Selling feels dangerous because the market might rebound; holding f... -
AI Data Center Water Consumption: WUE, Cooling and Investor Risks
Does one AI conversation use a bottle of water? Or is the footprint closer to a few drops? Both versions circulate widely, and the gap is large enough to mak... -
AI Data Center Power Demand: What Investors Should Check
A new AI data center is announced. The headline says a gigawatt. Another company reports a record backlog for electrical equipment. It is tempting to connect... -
Investment Leverage Explained: Margin Loans, Leveraged Funds and Daily Reset
Leverage means taking investment exposure larger than the capital you put at risk. It can come from a broker loan, derivatives or a fund that targets a multi... -
Investing for Busy Parents: Automate Contributions Without Losing Control
For a busy parent, the obstacle to investing is often not a shortage of market opinions. It is finding a routine that still works when childcare, school form... -
YINN, LABD, FAS, TNA, DRN and EDC: Six Leveraged ETFs, Different Risks
Six tickers can look like six versions of the same trade. YINN, LABD, FAS, TNA, DRN and EDC all involve daily leverage, but they do not bet on the same marke... -
SOXL Explained: Semiconductor Exposure, Daily 3x Leverage and Drawdown Risk
SOXL offers a simple headline: three times the daily move of a semiconductor index. The difficulty is in the words “daily” and “index.” Neither means three t... 広告
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How Founder Equity Creates Wealth: Dilution, Valuation and Cash Explained
A founder can own shares worth millions on paper while having very little cash available to spend. That is not necessarily a contradiction. A private-company... -
Mutual Fund NAV, Units and Redemption: A Plain-English Guide
A fund with a price of $10 is not necessarily cheaper than one priced at $100. A lower unit price may simply mean the same assets are divided into more units... -
Do New Leveraged ETFs Signal a Market Crash? How to Test the Claim
A new leveraged ETF launches, the market falls, and a convincing story appears: fund companies bring out exciting products just before a crash. The chronolog... -
Is Tesla Stock a Bubble? A Valuation Checklist Beyond the Growth Story
A company can build useful products, grow a business and still deliver a disappointing investment return at the wrong purchase price. That is the starting po...
