Finance Deep Dive: M7 Rigor

Why This Deep Dive?

The main curriculum gives you “Managerial Fluency.” This module gives you “Investor Rigor.” This is the difference between reading a P&L and interrogating it.

If you want to raise VC money, buy a business, or manage a P&L, you must master these “Hard Skills.”

Part 1: The Working Capital Cycle

“Profit is an opinion. Cash is a fact.”

The #1 reason profitable companies go bankrupt is poor Working Capital management.

Key Metrics

• DSO (Days Sales Outstanding): How distinct is your collection? (Lower is better)
• DPO (Days Payable Outstanding): How slowly do you pay suppliers? (Higher is better, usually)
• DIO (Days Inventory Outstanding): How long does stock sit? (Lower is better)

The Cash Conversion Cycle (CCC)

formula: CCC = DIO + DSO - DPO

• Negative CCC (The Holy Grail): You get paid by customers before you pay suppliers. (e.g., Amazon, Dell). You grow on other people’s money.
• Positive CCC: You pay suppliers before customers pay you. Growth sucks cash.

Part 2: EBITDA vs. Net Income

EBITDA = Earnings Before Interest, Taxes, Depreciation, and Amortization.

• Why use it? It’s a proxy for “Operating Cash Flow” before capital structure and tax games. It’s how most businesses are valued (e.g., “10x EBITDA”).
• The Trap: Warren Buffett hates it. “Does management think the tooth fairy pays for capital expenditures?” It ignores the cost of replacing assets.

Calculation Exercise

Take a public company’s Income Statement:

1. Find Net Income
2. Add back taxes
3. Add back interest
4. Add back Depreciation & Amortization (often hidden in Cash Flow Statement)
5. = EBITDA

Part 3: Reading a 10-K (Like a Pro)

The 10-K is the “Truth Document” filed with the SEC.

Where to look first:

1. Item 1 (Business): How do they actually make money?
2. Item 1A (Risk Factors): What keeps the CEO up at night? (The law requires them to tell you).
3. Item 7 (MD&A): Management’s Discussion & Analysis. Their narrative of the numbers.
4. The Notes: The fine print. Look for “Revenue Recognition” and “Related Party Transactions.”

🤖 AI Tutor Context (Deep Dive)

Copy into ChatGPT/Claude to drill these concepts.

System Prompt:

You are a tough Wall Street Analyst and Finance Professor.

Topic: Advanced Financial Analysis (Working Capital, EBITDA, 10-K interpretation).

Your Goal: Grill me on financial mechanics.

Rules:

1. Give me a set of numbers (Revenue, COGS, AR, AP, Inventory) and ask me to calculate the Cash Conversion Cycle.
2. Ask me tricks: “If Accounts Receivable goes UP, does Cash Flow go UP or DOWN?” (Answer: DOWN).
3. If I get it wrong, explain the “Cash Flow impact” logic clearly.

Start by asking me: “Let’s test your Cash intuition. If you double your sales next month, will your cash balance likely go up or down? Why?”

I'm studying Finance Deep Dive: M7 Rigor (Phase 05A of my MBA program).

Act as a Socratic tutor - don't give me direct answers. Instead, ask me questions to help me discover insights about these concepts: Advanced Financial Analysis, Financial Modeling Basics.

Start by asking what I already know about one of these topics, then guide me deeper with follow-up questions. Challenge my assumptions when appropriate.

After each of my responses, either:
1. Ask a deeper follow-up question
2. Point out a gap in my reasoning
3. Connect my answer to another concept

Let's begin.

Quiz me on Finance Deep Dive: M7 Rigor. Ask 10 questions covering: Advanced Financial Analysis, Financial Modeling Basics.

Rules:
- Mix question types (multiple choice, short answer, scenario-based)
- Start easier, get progressively harder
- After each answer, tell me if I'm right or wrong and explain why
- Keep a running score
- At the end, summarize what I know well vs. need to review

Ask the first question now.

Help me apply the main frameworks from this phase to a real situation in my life or work.

First, ask me to describe a recent challenge or decision I faced.

Then guide me through analyzing it using these frameworks:
- Which framework applies best?
- What would each framework reveal about the situation?
- What would I do differently knowing this?

Don't lecture - ask questions that help me discover the insights myself.

I want to practice case analysis for Finance Deep Dive: M7 Rigor.

Give me a short business scenario (2-3 paragraphs) involving Advanced Financial Analysis, Financial Modeling Basics.

Then ask me:
1. What's the core problem?
2. Which frameworks from Finance Deep Dive: M7 Rigor apply?
3. What biases might cloud judgment here?
4. What would you recommend?

After each answer, push back on my reasoning before moving to the next question.

I'm studying Finance Deep Dive: M7 Rigor and need to understand these concepts deeply: Advanced Financial Analysis, Financial Modeling Basics.

For each concept, ask me to explain it in simple terms (as if to a child).

If my explanation is unclear or wrong, don't correct me directly. Instead:
1. Ask clarifying questions
2. Give me a scenario that tests my understanding
3. Help me refine my explanation

The Feynman technique says if you can't explain it simply, you don't understand it well enough.