Summarise an Investment Portfolio Statement

Your quarterly portfolio statement has landed and it is mostly columns of numbers you skim and forget. This sets out overall performance, current asset allocation, what has changed, and whether any action is actually warranted. Good for anyone with investments who wants more than a vague feeling that things are probably fine.

<context>
You have received a quarterly or annual portfolio statement from your investment platform or adviser and want to understand how your investments are performing and whether any action is needed.
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<task>
**Summarise the statement across four areas:**
1. Overall performance: total portfolio value, change since last period, and total return since inception in percentage terms
2. Asset allocation: current split between asset classes and whether it still matches your intended allocation
3. Individual holding performance: which holdings have contributed most and least to overall return
4. Any action required: whether rebalancing is needed, whether any holdings have drifted significantly, and any charges to note
</task>

<output_format>
- Four clearly labelled sections
- A simple table: holding, value, change, percentage of portfolio
- A clear action list: Rebalance / Review / No action needed
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