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Economic Cycles and Long-Term Investment Strategies

經濟週期與長期投資策略

This article isn't about timing short-term trades. It's about using your understanding of the Economic Cycle to make better long-term investment decisions and reduce risk.

這篇不是在講短期交易的進出場時機,而是如何利用對經濟週期 (Economic Cycle) 的理解,在長期投資中做出更好的決策、減少風險。


1. Economic Cycle Basics: Four Phases

1. 經濟週期基礎:四個階段

The economic cycle consists of four phases. While the length and magnitude differ each time, the pattern keeps repeating.

經濟週期由四個階段組成,雖然長度與幅度每次不同,但模式持續重複。

Four Phases at a Glance

四階段概覽

PhaseCharacteristicsTypical Duration
ExpansionAccelerating GDP growth, low inflation, low interest rates, rising corporate earningsAvg. ~65 months (post-WWII)
PeakDemand exceeds supply, inflation heats up, central bank starts raising rates, unemployment at historic lows~18 months (late cycle)
Contraction / RecessionNegative GDP growth, layoffs, rising unemployment, falling pricesAvg. ~11 months
TroughEconomy hits bottom, demand and spending at their lowest, central bank cuts rates to stimulateTransitional phase
階段特徵典型持續時間
擴張 (Expansion)GDP 成長加速、低通膨、低利率、企業獲利上升平均 ~65 個月(二戰後)
高峰 (Peak)需求超過供給、通膨升溫、央行開始升息、失業率極低~18 個月(晚期週期)
收縮 / 衰退 (Contraction)GDP 負成長、企業裁員、失業率上升、價格下跌平均 ~11 個月
谷底 (Trough)經濟最低點、需求與支出降至最低、央行降息刺激過渡階段

Key Stats (Post-WWII U.S.):

  • 12 complete cycles
  • Average cycle length: ~6 years
  • Longest expansion: 128 months (2009-2020)
  • Shortest recession: 2 months (2020 COVID)

關鍵數據(二戰後美國):

  • 共經歷 12 次完整週期
  • 平均一個週期約 6 年
  • 最長擴張期:128 個月(2009-2020)
  • 最短衰退期:2 個月(2020 COVID)

Asset Class Performance Across Phases

各資產類別在不同階段的表現

PhaseStocksBondsReal EstateCommoditiesCash
Early ExpansionStrongest (highest annualized return)Good (corporate bonds)RecoveringNeutralWeak
Mid ExpansionGood (annualized ~14%)WeakeningStrongRisingWeak
Late / PeakModerate (annualized ~5%)Poor (rates rising)SlowingStrongestNeutral
RecessionPoor (annualized ~-15%)Strong (rates falling)DecliningWeakSafe haven
階段股票債券房地產商品現金
早期擴張最強(年化報酬最高)好(公司債)復甦中中性
中期擴張好(年化 ~14%)轉弱上升
晚期 / 高峰溫和(年化 ~5%)差(利率上升)放緩最強中性
衰退差(年化 ~-15%)(利率下降)下跌避風港

Source: Fidelity Research (1962-2020)

資料來源:Fidelity 研究(1962-2020)


2. Sector Rotation Strategy

2. 產業輪動策略 (Sector Rotation)

The stock market leads the real economy -- markets rally before the economy improves and drop before recessions officially begin.

股市的週期領先實體經濟——市場在經濟好轉前就先漲,在經濟衰退前就先跌。

Best and Worst Performing Sectors by Phase

各階段最佳 / 最差產業

PhaseBest PerformersWorst Performers
Early ExpansionTech, Consumer Discretionary, Financials, Real Estate, IndustrialsUtilities, Consumer Staples
Mid ExpansionTech, Industrials, Communication ServicesUtilities, Materials
Late / PeakEnergy, Materials, Healthcare, Consumer StaplesTech, Consumer Discretionary
RecessionConsumer Staples, Utilities, HealthcareFinancials, Consumer Discretionary, Industrials
階段表現最佳的產業表現最差的產業
早期擴張科技、非必需消費、金融、房地產、工業公用事業、必需消費
中期擴張科技、工業、通訊服務公用事業、原物料
晚期 / 高峰能源、原物料、醫療保健、必需消費科技、非必需消費
衰退必需消費、公用事業、醫療保健金融、非必需消費、工業

Cyclical vs. Defensive

週期性 vs 防禦性

  • Cyclical sectors (Tech, Consumer Discretionary, Financials, Industrials): outperform during expansions, high volatility during recessions
  • Defensive sectors (Healthcare, Consumer Staples, Utilities): stable during recessions, relatively muted during expansions
  • Factor performance: Late cycle favors Quality; early recovery favors Value; expansion favors Small-cap with positive excess returns
  • 週期性產業(科技、非必需消費、金融、工業):擴張期表現好,衰退波動大
  • 防禦性產業(醫療保健、必需消費、公用事業):衰退期穩定,擴張期表現相對遜色
  • 因子表現:晚期週期 Quality(高品質)表現最佳;早期復甦 Value(價值)表現突出;擴張期 Small-cap(小型股)有正超額報酬

3. Key Economic Indicators

3. 關鍵經濟指標

To determine where we are in the cycle, you need to watch two types of indicators:

判斷目前處於週期的哪個階段,需要觀察兩類指標:

Leading Indicators (Predicting the Future)

領先指標(預測未來)

Yield Curve -- The Most Reliable Recession Predictor

  • An inversion of the 10-year vs. 3-month Treasury spread (short-term rates > long-term rates) has successfully predicted every U.S. recession since 1960
  • Accuracy of ~87.5%, leading recessions by 12-15 months on average
  • Note: Within 12 months after the inversion ends (curve normalizes), the probability of recession exceeds 50%

殖利率曲線 (Yield Curve) — 最可靠的衰退預測指標

  • 10 年期與 3 個月期國債利差倒掛(短期利率 > 長期利率),自 1960 年以來成功預測了每一次美國衰退
  • 準確率約 87.5%,平均領先衰退 12-15 個月
  • 注意:倒掛結束(曲線恢復正常)之後的 12 個月內,衰退發生的機率超過 50%

PMI (Purchasing Managers' Index)

  • Above 50 = expansion; below 50 = contraction
  • Only several consecutive months below 50 signal a genuine slowdown

PMI(採購經理人指數)

  • 50 以上 = 擴張、50 以下 = 收縮
  • 連續數月低於 50 才是真正的放緩訊號

Other Important Leading Indicators

  • Conference Board Leading Economic Index (LEI): a composite of 10 leading indicators
  • Consumer Confidence Index
  • Building Permits
  • Sahm Rule: When the 3-month moving average of unemployment rises 0.5 percentage points above its 12-month low, a recession signal is triggered (11 for 11 since 1950)

其他重要領先指標

  • Conference Board 領先經濟指標 (LEI):10 項領先指標的綜合
  • 消費者信心指數
  • 建築許可證
  • Sahm Rule:當失業率 3 個月移動平均比過去 12 個月低點上升 0.5 個百分點,觸發衰退訊號(自 1950 年以來 11/11 次命中)

Lagging Indicators (Confirming What Already Happened)

落後指標(確認已發生的事)

IndicatorDescription
Unemployment RateRises 2-3 quarters after a recession begins (layoffs have a lag)
CPI (Consumer Price Index)Reflects inflation that has already occurred; useful for anticipating central bank policy moves
Corporate EarningsOnly reflected after quarterly reports; used to confirm recession severity and recovery speed
指標說明
失業率經濟衰退開始後 2-3 季才上升(企業裁員有延遲)
CPI(消費者物價指數)反映已經發生的通膨,可預判央行貨幣政策走向
企業獲利季報揭露後才反映,用來確認衰退嚴重程度與復甦速度

How to Interpret

如何解讀

  • One month of bad data is usually noise; 3-6 months of multiple indicators deteriorating simultaneously is a real signal
  • Don't look at any single indicator in isolation -- look for convergence across multiple uncorrelated indicators
  • Focus on trends and direction, not any single data point
  • Leading indicators help you "anticipate"; lagging indicators help you "confirm"
  • 一個月的壞數據通常是雜訊;3-6 個月多項指標同步惡化才是訊號
  • 不要看單一指標,要看多項不相關指標的「收斂」
  • 關注趨勢與方向,而非單一數字
  • 領先指標幫你「預判」,落後指標幫你「確認」

4. Adjusting Asset Allocation by Cycle Phase

4. 依週期調整資產配置

各階段建議配置

Early Expansion (Recovery):

  • Overweight: Stocks (especially cyclical/growth), corporate bonds
  • Underweight: Cash, government bonds
  • Preferred factor: Value (strong rebound potential)

早期擴張(復甦):

  • 加碼:股票(尤其週期性/成長股)、公司債
  • 減碼:現金、公債
  • 偏好因子:Value(價值股反彈力道強)

Mid Expansion:

  • Maintain: Balanced equity exposure
  • Add: Some commodity allocation (inflation emerging)
  • Reduce: Bond duration (rising rates hurt long bonds)
  • Preferred factor: Small/Mid-cap

中期擴張:

  • 維持:均衡股票曝險
  • 加入:部分商品配置(通膨開始)
  • 減少:債券存續期間(升息傷害長債)
  • 偏好因子:Small/Mid-cap

Late Cycle (Pre-Peak):

  • Reduce: Overall equity beta; rotate from cyclical to defensive
  • Prefer: High-quality companies (Healthcare, Pharma)
  • Increase: Commodities, inflation-protected assets
  • Raise: Cash position (building "dry powder" for the next opportunity)
  • Preferred factor: Quality

晚期(高峰前):

  • 降低:整體股票 Beta,從週期性轉向防禦性
  • 偏好:高品質企業(醫療、製藥)
  • 增加:商品、抗通膨資產
  • 提高:現金部位(為下一次機會準備「彈藥」)
  • 偏好因子:Quality

Recession:

  • Overweight: Treasuries, high-quality fixed income, cash
  • Maintain: Defensive stocks (Consumer Staples, Utilities, Healthcare)
  • Deploy: Use cash to buy discounted assets -- this is the opportunity phase

衰退:

  • 加碼:公債、高品質固定收益、現金
  • 維持:防禦性股票(必需消費、公用事業、醫療)
  • 部署:用現金買入折價資產——這是機會階段

Rebalancing Principles

再平衡原則

  • Frequency: Annual rebalancing works best for most people
  • Trigger: Execute when any asset class drifts more than +/-5% from target
  • Tax efficiency: Rebalance within tax-advantaged accounts whenever possible (saves ~44 bps/year)
  • Cash flow rebalancing: Use new contributions to bring allocations back to target, rather than selling
  • 頻率:每年再平衡一次,對多數人效果最佳
  • 觸發點:當資產類別偏離目標超過 ±5% 時執行
  • 稅務效率:盡量在免稅帳戶中再平衡(每年可省約 44 個基點)
  • 現金流再平衡:用新投入的錢把配置拉回目標,而非賣出

5. Dollar-Cost Averaging (DCA) vs. Tactical Allocation

5. 定期定額 (DCA) vs 戰術性配置

What the Research Says

研究怎麼說

Lump-Sum Investing Usually Beats DCA:

  • Vanguard study: Lump-sum outperformed 68% of the time across global markets (1976-2022)
  • When lump-sum wins, it earns ~8% more on average; when it loses, it loses ~4% less

整筆投入 (Lump-Sum) 通常優於 DCA:

  • Vanguard 研究:整筆投入在全球市場中 68% 的時間表現更好(1976-2022)
  • 整筆贏時平均多賺 ~8%;輸時平均少虧 ~4%

But DCA Has Significant Risk-Reduction Value:

  • Narrows the range of outcomes -- lower median returns but fewer extreme losses
  • Provides meaningful downside protection in high-volatility markets
  • Reduces "regret risk"

但 DCA 有重要的風險降低價值:

  • 縮小結果的範圍,降低中位數報酬但減少極端損失
  • 在高波動市場中提供顯著的風險保護
  • 減少「後悔風險」

Cycle-Aware Tactical Allocation Can Improve Returns:

  • Reducing equity weight when the CAPE ratio (Shiller P/E) is elevated can beat a static allocation
  • Increasing equity exposure in undervalued markets is equally effective

週期感知的戰術配置可以提升報酬:

  • 當 CAPE 比率(席勒本益比)偏高時,降低股票權重可以打敗靜態配置
  • 在低估值市場加碼股票,同樣有效

The Most Important Finding -- The 95.6% Rule:

  • A landmark study found that strategic asset allocation (your overall asset mix) explains 95.6% of return variance
  • Market timing and stock picking explain only ~4.4%
  • Conclusion: Getting your overall allocation right matters far more than trying to time the market precisely

最重要的發現 — 95.6% 法則:

  • 一項經典研究發現:投資策略性配置(你的整體資產比例)解釋了 95.6% 的報酬變異
  • 擇時與選股只解釋了約 4.4%
  • 結論:把整體配置做對,比試圖精準抓時間點重要得多

Best Practice

最佳做法

For most individual investors, the ideal approach is a combination:

  1. Maintain a strategic core allocation
  2. Deploy new capital via DCA (spread over no more than 6 months)
  3. Make moderate tactical adjustments based on the cycle (within +/-10-15% of core allocation)

對多數一般投資人而言,最理想的方式是組合

  1. 維持一個戰略性核心配置
  2. 新資金用 DCA 投入(最長不超過 6 個月分批)
  3. 根據週期做溫和的戰術調整(偏離核心配置 ±10-15% 以內)

6. Historical Case Studies

6. 歷史案例

The 2000 Dot-com Bubble

2000 網路泡沫 (Dot-com Bubble)

  • The Nasdaq surged 400% between 1995 and 2000, with P/E ratios reaching 200
  • Peaked at 5,048 on March 10, 2000
  • By October 2002, it had fallen to 1,139 -- a 77% decline
  • The Nasdaq didn't make a new all-time high until April 2015 (15 years later)
  • Nasdaq 在 1995-2000 間上漲 400%,本益比高達 200
  • 2000 年 3 月 10 日觸頂 5,048 點
  • 到 2002 年 10 月跌至 1,139 點——下跌 77%
  • Nasdaq 直到 2015 年 4 月才創新高(15 年後)

Signals a Cycle-Aware Investor Would Have Caught:

  • Massive insider selling (insiders sold 23x more shares than they bought in the month before the crash)
  • Extreme valuations (P/E of 200, completely detached from fundamentals)
  • Fed rate hikes (end of the easy-money era)

週期感知投資人的訊號:

  • 內部人士大量拋售(崩盤前一個月,內部人賣出股數是買入的 23 倍)
  • 極端估值(P/E 200,完全脫離基本面)
  • Fed 升息(寬鬆貨幣時代結束)

The 2008 Global Financial Crisis (GFC)

2008 金融海嘯 (GFC)

  • The S&P 500 fell ~57% from its peak
  • A systemic crisis rooted in excessive leverage at financial institutions
  • S&P 500 從高點下跌約 57%
  • 系統性危機,源自金融機構的過度槓桿

What Cycle-Aware Investors Did:

  • Warren Buffett: "Be greedy when others are fearful" -- invested $5 billion in Goldman Sachs preferred stock (10% yield) and $3 billion in GE
  • John Paulson: Saw through the subprime bubble, shorted MBS, and his fund returned over 400% in 2007
  • A retiree's case study: With a 50% stocks / 40% bonds / 10% cash allocation, this investor stopped selling equities during the crash, lived off cash and bond income, and rebalanced into stocks at the lows. A $1M portfolio in 2008 grew to $1.2M by 2018

懂週期的人怎麼做:

  • 巴菲特:「在別人恐懼時貪婪」——買入 Goldman Sachs 50 億美元優先股(10% 利率)、GE 30 億美元
  • John Paulson:看穿次貸泡沫,做空 MBS,2007 年基金報酬超過 400%
  • 一位退休人士的案例:50% 股 / 40% 債 / 10% 現金配置,崩盤時停止賣股,靠現金和債息生活,在低點再平衡買入股票。2008 年 100 萬的投資組合,到 2018 年成長至 120 萬

The 2020 COVID Crash

2020 COVID 崩盤

  • The S&P 500 plunged 34% in just 33 days -- the fastest bear market in history
  • The market bottomed on March 23 -- before the stimulus bill, before peak unemployment, before any vaccine
  • Within 3 months of the bottom, the S&P 500 had rallied 45%, and was up ~70% by year-end
  • Panicked investors fled to money market funds ($4 trillion ballooned to $5.3 trillion), and most of them missed the subsequent doubling
  • S&P 500 在 33 天內下跌 34%——史上最快的熊市
  • 市場在 3 月 23 日觸底——早於紓困法案、早於失業高峰、早於任何疫苗
  • 觸底後 3 個月 S&P 500 反彈 45%,年底上漲約 70%
  • 恐慌的投資人將資金撤入貨幣市場基金(從 4 兆暴增至 5.3 兆),大部分錯過了隨後的翻倍行情

Key Takeaways:

  • Average 12-month return following the last 10 recessions: 38-50%
  • Markets always recover -- but the timeline varies (Nasdaq took 76 trading days after COVID; the S&P 500 took 895 trading days after 2008)
  • To beat the 9% buy-and-hold return over the past 150 years, an investor would need to correctly predict 77% of market turning points -- virtually impossible

關鍵教訓:

  • 過去 10 次衰退後 12 個月的平均報酬:38-50%
  • 市場永遠會復甦——但復甦時間不同(COVID 後 Nasdaq 花 76 個交易日,2008 後 S&P 500 花 895 個交易日)
  • 要打敗 150 年來 9% 的買入持有報酬,投資人需要成功預測 77% 的市場轉折——幾乎不可能

7. Risk Management: Using Cycle Knowledge to Protect Your Portfolio

7. 風險管理:利用週期知識保護資產

Core Principles

核心原則

  1. Build Cash Reserves During Expansions
    • Maintain 3-6 months of emergency funds
    • Build a "war chest" -- capital specifically earmarked for recession-era opportunities
    • Those with adequate reserves can buy when others are forced to sell
  1. 在擴張期累積現金
    • 維持 3-6 個月緊急備用金
    • 建立「彈藥庫」——專門為衰退期的機會準備的資金
    • 有充足儲備的人,能在別人被迫賣出時買入
  1. Think Counter-Cyclically
    • Be aggressive during recessions (assets are cheap, competition is thin)
    • Be conservative during late expansions (valuations are stretched, risk is elevated)
  1. 逆週期思維
    • 在衰退期積極(資產便宜、競爭減弱)
    • 在晚期擴張保守(估值過高、風險升高)
  1. Tilt Toward Quality in Late Cycle
    • PIMCO research: Quality stocks deliver the best risk-adjusted returns in late cycle
    • Focus on low-cyclicality, high-quality companies
  1. 晚期週期偏向高品質
    • PIMCO 研究:Quality 股票在晚期週期有最佳的風險調整報酬
    • 聚焦低週期性、高品質企業
  1. Monitor Leading Indicators as an Early Warning System
    • Build a dashboard tracking credit conditions, asset valuations, and policy trends
    • Multiple indicators deteriorating simultaneously for 3-6 months = go defensive
  1. 監控領先指標作為預警系統
    • 建立追蹤信用狀況、資產估值、政策趨勢的儀表板
    • 多項指標同時惡化 3-6 個月 → 轉防禦
  1. Remember That Markets Are Forward-Looking
    • Stock prices reflect expectations, not the present
    • Markets bottom before the worst economic data arrives
    • By the time the news is at its darkest, the best buying opportunity has usually passed
  1. 記住市場是前瞻性的
    • 股價反映的是預期,不是當下
    • 市場在最壞的經濟數據出現之前就觸底
    • 等到新聞最糟糕時,最佳買點通常已過

8. Practical Frameworks

8. 實用框架

Framework 1: Ray Dalio's All Weather Portfolio

框架一:Ray Dalio 全天候投資組合 (All Weather Portfolio)

Core idea: Don't try to predict the future -- prepare for every possible scenario.

核心理念: 不試圖預測未來,而是為所有可能的情境做好準備。

Four Economic Scenarios and Corresponding Assets:

四種經濟情境與對應資產:

ScenarioFavorable Assets
Rising growth + low inflationStocks
Rising growth + high inflationCommodities
Falling growth + low inflation / deflationLong-term bonds
Falling growth + high inflationGold / Commodities / TIPS
情境有利資產
成長上升 + 低通膨股票
成長上升 + 高通膨商品
成長下降 + 低通膨/通縮長期債券
成長下降 + 高通膨黃金/商品/TIPS

Standard Allocation:

  • 30% Stocks (e.g., S&P 500)
  • 40% Long-term Treasuries (20+ years)
  • 15% Intermediate-term Treasuries (7-10 years)
  • 7.5% Commodities
  • 7.5% Gold

標準配置:

  • 30% 股票(如 S&P 500)
  • 40% 長期公債(20 年以上)
  • 15% 中期公債(7-10 年)
  • 7.5% 商品
  • 7.5% 黃金

Performance: Annualized return of 9.7% from 1996-2020 (vs. 7.6% for the S&P 500 over the same period), with far smaller maximum drawdowns than an all-equity portfolio. Even posted a positive return during the 2008 GFC.

績效: 1996-2020 年年化報酬 9.7%(同期 S&P 500 為 7.6%),最大回撤遠小於純股票。2008 金融海嘯期間甚至產生正報酬。

Dalio's quote: "With 5 good, uncorrelated return streams, properly balanced for risk... I won't reduce returns, but I can reduce risk by up to 80%."

Dalio 金句: 「5 個好的、不相關的報酬來源,做好風險平衡……我不會降低報酬,但可以降低高達 80% 的風險。」

Framework 2: Howard Marks' Market Cycle Approach

框架二:Howard Marks 市場週期方法

Core idea: "We may never know where we're going, but we'd better have a good idea of where we are."

核心理念: 「我們永遠不知道要去哪裡,但一定要知道現在在哪裡。」

The Pendulum Metaphor:

  • Investor psychology swings between two extremes: greed vs. fear, optimism vs. pessimism
  • Markets rarely rest at the midpoint -- most of the time, they're either above or below average
  • An overshoot in one direction inevitably sets the stage for a swing in the other

鐘擺比喻:

  • 投資人心理在兩個極端之間擺盪:貪婪 ↔ 恐懼、樂觀 ↔ 悲觀
  • 市場很停在中間——大部分時間不是在平均之上就是之下
  • 一個方向的過度,必然為反向擺盪埋下伏筆

Two Key Questions:

  1. How are things priced right now? (Quantitative -- valuations vs. historical averages)
  2. How are the investors around you behaving? (Qualitative -- risk appetite, level of complacency)

兩個關鍵問題:

  1. 現在的定價如何?(定量——估值 vs 歷史平均)
  2. 周圍的投資人行為如何?(定性——風險偏好、自滿程度)

How to Respond:

  • Elevated valuations + widespread optimism = tilt defensive
  • Fear dominant + prices reflecting despair = tilt aggressive

如何回應:

  • 估值偏高 + 樂觀瀰漫 → 偏防禦
  • 恐懼主導 + 價格反映絕望 → 偏積極

Marks' quote: "The biggest source of risk is the belief that there is no risk."

Marks 金句: 「風險最大的來源,就是相信沒有風險。」

Framework 3: The Merrill Lynch Investment Clock

框架三:美林投資時鐘 (Merrill Lynch Investment Clock)

Using GDP growth and CPI inflation as two axes, the economy is divided into four quadrants:

以 GDP 成長與 CPI 通膨為兩軸,將經濟分為四個象限:

QuadrantGrowthInflationBest AssetRecommendation
I - Deflationary RecoveryLow / fallingLow / fallingBondsCentral bank cutting rates; buy long-duration bonds
II - RecoveryRisingLowStocksEasing policy taking effect; equities deliver strongest excess returns
III - OverheatingHighRisingCommoditiesCapacity constraints; real assets outperform
IV - StagflationFallingHighCashCapital preservation; wait for the cycle to reset
象限成長通膨最佳資產建議
I 通縮復甦低/下降低/下降債券央行降息;買長天期債券
II 復甦上升股票寬鬆政策發揮作用;股票超額報酬最強
III 過熱上升商品產能限制;實物資產勝出
IV 滯脹下降現金保本;等待週期重置

Combining All Three Frameworks

三個框架的綜合應用

These three frameworks are complementary, not competing:

這三個框架是互補的,不是競爭的:

  1. Dalio (All Weather) --> Build a structurally resilient core allocation
  2. Marks (Market Cycles) --> Read the behavioral signals; calibrate your risk appetite
  3. Merrill Clock --> Macro mapping to decide which asset class to overweight or underweight
  1. Dalio(全天候)→ 建立結構性韌性的核心配置
  2. Marks(市場週期)→ 感知行為面,校準風險偏好
  3. 美林時鐘總經面映射,決定加碼/減碼哪種資產

Practical Synthesis for Individual Investors:

  1. Start with Dalio as the core (diversified across stocks, bonds, commodities, and gold)
  2. Use the Merrill Clock to identify the current economic quadrant
  3. Use Marks' framework to assess whether market sentiment and valuations are at extremes
  4. Make moderate tactical adjustments (within +/-10-15% of core allocation)
  5. Rebalance annually or whenever drift exceeds 5%

一般投資人的實務綜合:

  1. 以 Dalio 為核心(股票、債券、商品、黃金分散配置)
  2. 用美林時鐘判斷目前在哪個經濟象限
  3. 用 Marks 框架評估市場情緒/估值是否走向極端
  4. 做溫和的戰術調整(偏離核心配置 ±10-15% 以內)
  5. 每年或偏離超過 5% 時再平衡