SKILL – Valuation Calculator

03
Mar2026
George
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📊 Valuation Calculator 是什麼？

Valuation Calculator 是一個美股快速估值工具，幫助投資人在幾秒內獲得完整的股票估值數據。只需輸入一行指令，就能得到 PEG、EV/EBITDA、DCF 等多種估值方法的結果。

🎯 為什麼需要股票估值？

投資的核心問題是：「這檔股票現在的價格是高還是低？」

估值方法幫助你回答這個問題。常見的估值指標包括：

  • PEG Ratio — 本益比相對於成長率，衡量成長股是否合理定價
  • EV/EBITDA — 企業價值相對於利息、稅項、折舊及攤銷前盈利，適合比較不同規模的公司
  • DCF (現金流折現) — 評估公司未來現金流的現值，是最理論嚴謹的估值方法

🧮 功能介紹 Features

1. PEG 隱含成長率計算

PEG = P/E ÷ Growth Rate

當 PEG < 1，表示市場可能低估了公司的成長性；PEG > 1 則可能高估。

2. EV/EBITDA + Rule of 40

Rule of 40 是一個簡單的經驗法則：營收成長率 + 利潤率 > 40% 的公司，成長性和盈利能力較為平衡。

3. DCF 現金流折現估值

根據DCF模型計算股票的內在價值，支援自訂參數：

value dcf NVDA --growth=0.15
value dcf AAPL --growth=0.08 --margin=0.25

4. 持股儀表板 + 三大指數

一覽自己投資組合的估值狀況，以及大盤指數（標普500、納斯達克、道瓊斯）的整體估值水平。

🚀 快速開始

# 完整估值分析
value NVDA

# 僅看 PEG 分析
value peg NVDA

# 自訂 DCF 參數
value dcf NVDA --growth=0.15

# 查看持股儀表板
value dashboard

📈 估值方法詳解

PEG Ratio（本益比成長比）

公式：PEG = P/E ÷ EPS Growth Rate

解讀：

  • PEG < 1：成長率高於股價，股票可能被低估
  • PEG = 1：合理估值
  • PEG > 1：成長率低於股價，股票可能被高估

EV/EBITDA

公式：EV/EBITDA = 企業價值 ÷ EBITDA

解讀：

  • EV/EBITDA < 10：相對便宜
  • EV/EBITDA 10-20：合理範圍
  • EV/EBITDA > 20：相對昂貴

DCF（現金流折現）

DCF 是最全面的估值方法，但也是最複雜的。它考慮了：

  • 未來自由現金流預測
  • 折現率（WACC）
  • 永續成長率（Terminal Growth）

❓ 常見問題 FAQ

Q: 估值分數越高越好嗎？

A: 不一定。高估值可能代表市場對公司期待很高，但一旦失望，股價回調也會很劇烈。低估值可能是價值陷阱，需要仔細分析。

Q: 應該用哪種估值方法？

A: 不同類型的公司適用不同的方法：

  • 成長股 → PEG 最具參考價值
  • 價值股 → EV/EBITDA 更準確
  • 大型藍籌 → DCF 最全面

Q: 估值和技術分析有衝突嗎？

A: 沒有。估值告訴你「應該是多少」，技術分析告訴你「市場認為是多少」。兩者結合可以提高勝率。

Q: 這個工具適合新手嗎？

A: 適合。工具簡化了複雜的計算過程，讓你可以快速獲得估值數據。但建議學習背後的原理，才能更好地解讀結果。

🔗 相關資源

⚠️ 免責聲明

本工具僅供教育參考，不構成投資建議。投資有風險，請自行承擔決策責任。

🇺🇸 English Version

📊 What is Valuation Calculator?

Valuation Calculator is a rapid US stock valuation tool that helps investors get complete stock valuation data in seconds. Just enter a single command to get results across multiple valuation methods including PEG, EV/EBITDA, and DCF.

🎯 Why Do You Need Stock Valuation?

The core question in investing is: “Is the current stock price high or low?”

Valuation methods help you answer this question. Common valuation metrics include:

  • PEG Ratio — Price-to-earnings relative to growth rate; measures whether growth stocks are reasonably priced
  • EV/EBITDA — Enterprise value relative to earnings before interest, taxes, depreciation, and amortization; suitable for comparing companies of different sizes
  • DCF (Discounted Cash Flow) — Evaluates the present value of a company’s future cash flows; the most theoretically rigorous valuation method

🧮 Features

1. PEG Implied Growth Rate Calculation

PEG = P/E ÷ Growth Rate

When PEG < 1, the market may be undervaluing the company's growth; PEG > 1 may indicate overvaluation.

2. EV/EBITDA + Rule of 40

Rule of 40 is a simple rule of thumb: companies with revenue growth rate + profit margin > 40% have a relatively balanced growth and profitability.

3. DCF Discounted Cash Flow Valuation

Calculates the intrinsic value of a stock based on the DCF model, with customizable parameters:

value dcf NVDA --growth=0.15
value dcf AAPL --growth=0.08 --margin=0.25

4. Portfolio Dashboard + Three Major Indices

Overview your investment portfolio’s valuation status and overall market indices (S&P 500, NASDAQ, Dow Jones) valuation levels.

🚀 Quick Start

# Full valuation analysis
value NVDA

# PEG analysis only
value peg NVDA

# Custom DCF parameters
value dcf NVDA --growth=0.15

# View portfolio dashboard
value dashboard

📈 Detailed Valuation Methods

PEG Ratio

Formula: PEG = P/E ÷ EPS Growth Rate

Interpretation:

  • PEG < 1: Growth rate higher than stock price; stock may be undervalued
  • PEG = 1: Fair value
  • PEG > 1: Growth rate lower than stock price; stock may be overvalued

EV/EBITDA

Formula: EV/EBITDA = Enterprise Value ÷ EBITDA

Interpretation:

  • EV/EBITDA < 10: Relatively cheap
  • EV/EBITDA 10-20: Fair range
  • EV/EBITDA > 20: Relatively expensive

DCF (Discounted Cash Flow)

DCF is the most comprehensive valuation method but also the most complex. It considers:

  • Future free cash flow projections
  • Discount rate (WACC)
  • Terminal growth rate

❓ FAQ

Q: Is a higher valuation score better?

A: Not necessarily. High valuations may mean the market has high expectations for the company, but once disappointed, stock price corrections can be severe. Low valuations might be value traps—careful analysis is needed.

Q: Which valuation method should I use?

A: Different types of companies suit different methods:

  • Growth stocks → PEG is most valuable
  • Value stocks → EV/EBITDA is more accurate
  • Large blue chips → DCF is most comprehensive

Q: Does valuation conflict with technical analysis?

A: No. Valuation tells you “what it should be”; technical analysis tells you “what the market thinks.” Combining both can improve win rates.

Q: Is this tool suitable for beginners?

A: Yes. The tool simplifies complex calculations, allowing you to quickly get valuation data. But it’s recommended to learn the underlying principles to better interpret results.

⚠️ Disclaimer

This tool is for educational purposes only and does not constitute investment advice. Investing involves risk; please bear your own responsibility for decisions.

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🔑 相關關鍵字

相關標籤： 股票估值、本益比、PEG ratio、EV/EBITDA、DCF 模型、現金流折現、價值投資、股票分析、美股投資

Related Tags： stock valuation, P/E ratio, PEG ratio, EV/EBITDA, DCF model, discounted cash flow, value investing, stock analysis, US stock investment, fundamental analysis

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