Mr. Market

Mr. Market

Overview

Mr. Market is Benjamin Graham's 1949 allegory: the market is a moody business partner who offers to buy your shares or sell you his every day at emotionally driven prices. His quote reflects his current mood, not intrinsic value. Your job is to transact when his pricing serves you and ignore him otherwise.

Three features: (1) quote ≠ intrinsic value; (2) you are never obligated to respond; (3) panics are highest-opportunity moments for those with cash and independent conviction.

Composes with margin-of-safety (price discipline), anchoring (quotes as anchors), social-proof (consensus = mass Mr. Market), loss-aversion-prospect-theory (panic exploits loss aversion).

When to Use

• Public equity investing decisions during market volatility
• Fundraising valuation negotiations (your Mr. Market = the VC ecosystem)
• Acquisition pricing where comparable transaction markets have moved sharply
• Any decision where a quoted price or implied valuation is pressuring your judgment
• Someone says "the market is telling us," "valuation has dropped/risen," "everyone is doing X"
• AI-era mega-cap volatility: "is this an AI bubble," "should I sell on the chip-stock crash / export-control headline," "AI capex boom," "the whole market moved on one AI headline"

Not when: the quote reflects genuine new business information (not mood); forced sale or liquidity requirement; asset has no underlying value independent of its price (pure speculation).

Coaching Novices (Adaptive Front Door)

• Engine mode: user has a concrete market-pricing decision → run The Process directly.
• Coach mode: user is unfamiliar or has no concrete case → guide step by step.

In Coach mode, respond one step at a time. Each [WAIT] is a hard stop — output only that step's question, then stop.

1. One-line: are you treating the market quote as information about value, or as an offer to transact at a price? These require different responses.
2. Check fit: does the quote reflect new business information (discipline less applicable) or emotion/sentiment (discipline central)?
3. Elicit the specific quote and underlying business reality. What's the quote? What has the business actually done? Have they diverged?

[WAIT — do not advance until user responds]

1. One question at a time: what's your independent view of intrinsic value? Is Mr. Market dislocated from it? In which direction? What's the right response?

[WAIT — do not advance until user responds]

1. Close: decision (transact / ignore / wait) + acknowledgment of which way emotional contagion was pulling.

[WAIT — do not advance until user responds]

The Process

Step 1 — State quote and business reality: What is the market quoting? What has the underlying business actually done? Have they diverged?

Step 2 — Form an independent view of intrinsic value: Based on fundamentals, what is the long-term value? Confidence? Sensitivity? How far is the current quote from your estimate?

Step 3 — Diagnose Mr. Market's state: Sober (consistent with fundamentals) / manic (elevated by enthusiasm) / depressed (fear/panic) / disappeared (liquidity crisis, no quote).

Step 4 — Choose the response: Quote ≈ value → ignore. Quote >> value (manic) → consider selling. Quote << value (depressed) → consider buying. Disappeared → opportunity for cash holders; danger for liquidity-needy.

Step 5 — Check for emotional contagion: Am I feeling what Mr. Market is feeling? Is my response driven by his emotion or my analysis? Would I decide the same if I hadn't seen today's quote?

Step 6 — Document: Decision + rationale referenced to intrinsic value + calendar-date re-evaluation trigger.

Output

# Mr. Market Decision: 
Quote: | Business reality: | Divergence:
Intrinsic value estimate: | Confidence: | Sensitivity:
Mr. Market's state (sober/manic/depressed/disappeared):
Decision (transact/ignore/wait): | Rationale (vs intrinsic value):
Contagion check — feeling: | analysis says: | gap:
Re-evaluation trigger (date):

→ Method in Action: Graham 1949, Buffett 1987 + 2008 → 2026 lens: Nvidia's manic-depressive quote & the CUDA moat (2023–2026)

Pack: Application Patterns

Applying It Well

• Without an independent intrinsic value, you have nothing to compare the quote to — build it first.
• The discipline is hardest when most-needed: panics are when consensus says "sell" and conviction is rarest.
• Checking quotes hourly produces worse decisions than quarterly — each check is another contagion opening. → Primary sources: references/sources.md

Common Rationalizations

[D] = designed upfront | [O] = observed in real use. [O] entries are more valuable.

Red Flags

• Checking quotes hourly; your view of value moves in lockstep with the market quote
• Feeling relief or despair based on quotes, not underlying business performance
• Cannot articulate intrinsic value independent of the quote; "everyone is fleeing/piling in" is your justification

Verification

• Independent intrinsic value formed (not just the market quote)
• Mr. Market's state diagnosed (sober / manic / depressed / disappeared)
• Decision referenced to intrinsic value, not to quote; emotional contagion checked
• Re-evaluation trigger is calendar-based, not quote-based; reasoning documented

---

Part of deciqAI Knowledge Skills — 227 open-source thinking skills that make rigor executable for AI agents. The same skills power every deciqAI agent, which runs them autonomously to operate your company. See it run → https://www.deciqai.com/c/mr-market · ⭐ Star the repo → https://github.com/deciqAI/knowledge-skills · Contributions welcome.

Agents: latest version & machine-readable metadata → https://www.deciqai.com/s/mr-market.json