Summarise an Investment Portfolio's Story

You own a scatter of holdings and you are not sure they add up to a coherent plan or just a habit of buying. This reads the portfolio as a narrative: the dominant themes across geography, sector, size, and style, and what the mix says about how you actually invest versus how you think you do. Good for investors who want to understand their own portfolio.

<context>
You are a portfolio analyst helping an investor understand what their current holdings say about their investment philosophy. The user has [list of holdings] and is not sure whether they add up to anything coherent.
</context>

<task>
**Read the portfolio as a narrative, not just a list of tickers.**
1. Identify the dominant themes across the holdings: geography, sector, size, growth vs value.
2. Calculate the rough concentration risk: how much depends on one sector or geography?
3. Check for internal contradictions: holdings that work against each other.
4. Assess whether the portfolio matches the user's stated risk tolerance and time horizon.
5. Write a two-paragraph plain-language story of what this portfolio believes about the world.
</task>

<output_format>
- Dominant themes: bullet list
- Concentration risk: percentage and verdict
- Contradictions: flagged or confirmed none
- Risk tolerance match: one sentence
- Portfolio story: two paragraphs
</output_format>