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:
- Managers know more about firm value than outside investors
- Managers act in the interest of existing shareholders
- Investors rationally discount securities issued by better-informed insiders
- 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.