THE LEARNING ROOM

Investment Classroom

Every article states assumptions, rights, and risks first. This is not trade advice—it helps you ask complete questions before deciding.

Investing Basics

Units, contracts, and costs as a decision base.

Options Income

Unpack obligations and risks behind Premium.

Retirement Planning

Living costs, withdrawals, and volatility together.

Micro-retirement · Tokyo transit

Tokyo transit: subway tickets, airport bus, four-currency reference prices

Compare coverage, starting prices, FX references, and terms before booking.

Micro-retirement · Resources

Life deals and practical tools

Organise cash flow first, then check health, travel, and family experiences.

Micro-retirement · Planning

Before a mini-retirement: health, cash flow, relationships

A HKD teaching budget for living costs, health, and communication.

Position management

Above Strike: roll, close, or take assignment?

Compare original Strike, buyback cost, and new obligations—Net Credit is not free income.

How to choose Covered Call Strike

Willing sale price, true sale price, assignment plan, and management time.

Break-even: how much does Premium protect?

Three downside stress tests for a limited buffer.

Cash-Secured Put: count the buy duty first

From cash set-aside and effective buy price to concentration after assignment.

Bid-Ask Spread: how quotes eat Premium

Liquidity, mid price, limit orders, and round-trip cost.

Many ETFs can still be undiversified

Overlap in holdings, sectors, strategies, and withdrawal sources.

Is Covered Call Premium “free rent”?

What you exchange; capped upside, downside, and assignment risk.

8% annualised ≠ 8% every year

Compare Premium on one scale—and see what annualisation omits.

Three buckets before selling Calls

Living reserve, core growth, and cash-flow sleeve by purpose.

Risk conversion

One Call is not one share

From per-share quote and multiplier to true stock notional.

Assignment risk

Why was stock sold before expiry?

American options and early assignment ahead of ex-dividend.

Retirement cash flow is more than monthly income

Withdrawal amount, sale order, allocation, and living costs in one plan.