Who this is for
Founders preparing the market slide for a pre-seed, seed, or Series A institutional round. If your current slide is a single $XB headline pulled from a Gartner or Statista report, this page is for you. Also relevant for founders who have been told their TAM is "too small" and need to either widen the lens or sharpen the wedge story without losing credibility.
What investors look for
Investors read the market slide for two things: is the math defensible, and is the wedge specific? Defensible means every multiplier is one they can challenge in real time, "how did you get to 38,000 mid-market sales teams?" should have a one-sentence answer. Specific means you can name the first 200 customers you'll sell to and explain why they'll buy. On the Deckmetric methodology the market slide is the single largest contributor to the Validate dimension; decks with all three layers (TAM/SAM/SOM) plus a bottom-up derivation typically score 75+ here.
Common mistakes
1) Single-number TAM with no derivation. 2) TAM cited from a 5-year-old report. 3) SOM equal to TAM ("we can capture the whole market"). 4) SOM that requires being the dominant player in 3 years. 5) Conflating TAM with revenue opportunity ("$48B TAM × 1% = $480M ARR" with no named customer count). 6) Wedge that's actually a feature ("founders who use Notion") rather than a buyer ("VC-backed Series A operations leads"). 7) Expansion path that requires three product pivots to reach.
Three template patterns that work
Pattern A, Three nested circles + one calculation: TAM/SAM/SOM as concentric circles with the bottom-up SOM math written below in one line ("38,000 teams × $24K seats × 4% in 5 years = $200M ARR"). Pattern B, Wedge-first: lead with the named 200-customer wedge, then nest SAM and TAM behind it as the credible expansion lanes. Pattern C, Comparable-as-anchor: open with a public company that already proved an adjacent segment ("Gusto reached $500M ARR serving the SMB-payroll wedge of this same TAM") and use it to justify both the math and the wedge logic. All three patterns finish on a one-line claim of which 200 customers you sell to first, that is the sentence that turns a market slide from theoretical to investible.
How Deckmetric scores this slide
Inside the Deckmetric CVM rubric (full breakdown at /methodology), the market slide is the single largest contributor to the Validate dimension. Three sub-scores drive it: TAM/SAM/SOM completeness, derivation-quality (bottom-up vs. top-down), and wedge-specificity. Decks with all three layers, a named bottom-up calculation, and a 200-customer wedge typically score 75+ on Validate. A single-number TAM with no derivation, or a wedge that's actually a feature, usually scores below 50, and Validate carries the heaviest weight in the headline CVM, so a weak market slide is almost always fatal. See the full Validate rubric at /methodology.