Pecking Order Theory

Overview

Pecking order theory (Myers & Majluf, 1984) argues that firms follow a strict financing hierarchy — internal funds first, then debt, then equity — driven by information asymmetry between managers and outside investors. Unlike tradeoff theory, there is no target leverage ratio.

When to Use

• Explaining why firms accumulate cash rather than return it
• Interpreting market reactions to financing announcements
• Predicting financing choices based on information environment
• Analyzing why high-profit firms often have low leverage

When NOT to Use

• When the firm has minimal information asymmetry (e.g., transparent regulated utilities)
• For firms that actively target a leverage ratio (tradeoff theory better fits)
• When tax considerations clearly dominate financing choices

Assumptions

IRON LAW: Firms prefer internal financing first because external
financing signals negative private information. Equity issuance is
the most informationally sensitive — and therefore most costly — source.

Key assumptions:

1. Managers know more about firm value than outside investors
2. Managers act in the interest of existing shareholders
3. Investors rationally discount securities issued by better-informed insiders
4. Transaction costs increase from internal funds to debt to equity

Methodology

Step 1 — Assess Information Asymmetry

• How transparent is the firm's business? (R&D-intensive = high asymmetry)
• What is the track record of management communication?
• How complex are the firm's assets to value externally?

Step 2 — Identify Available Financing Sources

Source	Adverse Selection Cost	Pecking Order Rank
Retained earnings	None	1st (preferred)
Bank debt (secured)	Low	2nd
Public debt (bonds)	Medium	3rd
Convertible debt	Medium-High	4th
Equity issuance	Highest	Last resort

Step 3 — Predict or Explain Financing Choice

• Sufficient internal funds: no external financing needed
• Internal funds insufficient: issue safest security first (debt before equity)
• Equity issuance: signals management believes shares are overvalued

Step 4 — Evaluate Market Reaction

• Equity issuance announcement: expect negative stock price reaction (-2% to -3% typical)
• Debt issuance: modest or neutral reaction
• Internal financing: no signaling effect

Output Format

## Pecking Order Analysis: [Firm / Decision]

### Information Environment
- Asymmetry level: [High / Medium / Low]
- Key drivers: [R&D intensity, asset complexity, etc.]

### Financing Decision
| Option | Available | Adverse Selection Cost | Chosen? |
|--------|-----------|----------------------|---------|
| Internal funds | [Y/N] | None | [Y/N] |
| Debt | [Y/N] | [Low/Medium] | [Y/N] |
| Equity | [Y/N] | [High] | [Y/N] |

### Signaling Implications
- [Expected market reaction and rationale]

### Assessment
- [Consistent with pecking order? If not, why?]

Gotchas

• Pecking order predicts no target leverage — leverage is the cumulative result of past financing needs
• The theory better explains large, mature firms; startups often must issue equity
• Empirical evidence is mixed — some firms clearly target leverage ratios
• Information asymmetry varies over time; post-earnings or post-audit windows reduce it
• Does not explain why some firms issue equity when they have cash (empire building, market timing)
• Hybrid securities (convertibles, preferred) blur the hierarchy boundaries

References

• Myers, S. & Majluf, N. (1984). Corporate financing and investment decisions when firms have information that investors do not have. Journal of Financial Economics, 13(2), 187-221.
• Myers, S. (1984). The capital structure puzzle. Journal of Finance, 39(3), 575-592.
• Frank, M. & Goyal, V. (2003). Testing the pecking order theory of capital structure. Journal of Financial Economics, 67(2), 217-248.