---
id: "action-calculate-cb"
type: "action-item"
source_timestamps: ["Reel 31"]
tags: ["valuation", "math"]
related: ["concept-cagr-benchmark-cb", "framework-cb-calculation", "entity-sp500"]
speakers: ["Condel Bowen"]
outcome: "Prevents overpaying for growth stocks with mathematically delusional expectations."
---
# Calculate the CAGR Benchmark (CB)

## Action

Before buying a growth stock, calculate the **required CAGR for that stock to match the S&P 500's 13.8-year payback period**. If the required growth rate is unrealistically high (e.g., Tesla's 45.3%), do not buy.

## How

Use the procedure in [[framework-cb-calculation]]:

1. Find target P/E.
2. Set payback period = 13.8 years.
3. Solve for required CAGR.
4. Sanity-check against company history and TAM.

Full conceptual frame: [[concept-cagr-benchmark-cb]]. Baseline reference: [[entity-sp500]].

## Outcome

Prevents overpaying for growth stocks with mathematically delusional expectations.

## Use Cases

- Pre-trade filter on any high-P/E name.
- Post-trade sanity check on existing holdings.
- Quick comparison across candidate growth picks.