Major Investment Decision Framework / 重大投资决策框架

Definition

The major investment decision framework is a five-step process for consequential allocation changes: define the objective, choose the instrument category, pre-mortem the worst case and fallback, select specific products, and establish an entry, exit, or adjustment rhythm.

Current Synthesis

The framework reverses product-first investing. A portfolio change begins with the job the capital must perform, then asks which instrument can plausibly do that job under the investor’s own balance sheet, currency, horizon, competence, and drawdown tolerance. Product comparison occurs only after the role and failure boundary are explicit.

The pre-mortem links thesis risk to position size. The investor estimates a tolerable sleeve-level loss, translates it into portfolio-level damage, rejects leverage that would break the budget, and identifies a fallback use if the preferred macro scenario never appears. Implementation is then staged around explicit triggers so uncertainty does not force an all-in forecast.

Key Claims

• Objectives should determine the instrument search; a marketed product or recent return should not invent the objective after the fact.
• Instrument fit is functional: hedging, liquidity, cash flow, capital gain, and spending-currency matching are separate portfolio jobs.
• A worst-case scenario should be translated into both sleeve-level drawdown and total-portfolio damage before sizing.
• A fallback use makes a decision less dependent on one forecast being correct.
• Product selection must distinguish maturity, duration, leverage, liquidity, currency, and principal-repayment mechanics.
• Staged entry and conditional resizing replace the need to identify the exact market turning point.

Evidence

• Goal and instrument sequence: 184.这轮加息周期我做的一个重大投资决策｜三季度投资账复盘 begins with future equity dry powder and retirement cash flow before comparing options, bond ETFs, and individual bonds.
• Loss-budget sequence: 184.这轮加息周期我做的一个重大投资决策｜三季度投资账复盘 combines a 15%–20% sleeve drawdown assumption with a 10% maximum weight to target roughly 2% portfolio damage.
• Implementation sequence: 184.这轮加息周期我做的一个重大投资决策｜三季度投资账复盘 uses daily small purchases, an initial 5% target, and rate or credit-stress triggers before any move toward 10%.

Counterevidence & Qualifications

The five steps organize judgment but do not make forecasts correct, loss estimates complete, or trigger rules self-executing. Correlations, liquidity, taxes, regulation, counterparty exposure, and currency moves can change after the plan is written. The source demonstrates one investor’s overseas bond decision; its percentages, instruments, and macro assumptions are not transferable defaults.

What Changed

• Created the framework from the episode’s explicit five-step decision path.

Related Concepts

• Portfolio Suitability - tests whether the objective, instrument, and risk path fit the actual holder.
• Position Sizing - converts the worst-case scenario into bounded portfolio exposure.
• Investment Decision Logging - preserves the objective, evidence, triggers, and fallback for later review.
• Investment Risk Management - supplies the broader survival, liquidity, leverage, and mechanism controls.
• Investment Cooldown Discipline - adds time friction before a consequential allocation change.
• Long-Duration Bond Defense / 长久期债券防守配置 - the source’s worked example of the five-step framework.