# Portfolio Allocation Calculator
Paste holdings and calculate percentage allocation by asset class, holding, sector, or account with chart-ready values and concentration score.
## Run it
- **CLI:** `gizza tool portfolio-allocation "Name, Value, Asset, Sector, Account
AAPL, 6000, Stocks, Technology, Brokerage
BND, 3000, Bonds, Bonds, IRA
Cash, 1000, Cash, Cash, Savings"`
- **Web:** https://gizza.ai/tools/portfolio-allocation/
- **Agents:** machine-readable descriptor (parameters JSON Schema) at https://gizza.ai/tools/portfolio-allocation/tool.json
## Inputs
- `input` — Holdings _(field)_
- `group_by` — Group by _(field)_
- `sort` — Sort _(field)_
- `top_n` — Top N slices _(field)_
- `currency` — Currency prefix _(field)_
## Output
- Allocation table (text)
## Query parameters
Open the tool pre-filled and auto-run via URL:
- `input` — Holdings
- `group_by` — Group by
- `sort` — Sort
- `top_n` — Top N slices
- `currency` — Currency prefix
Example: `https://gizza.ai/tools/portfolio-allocation/?input=Name%2C%20Value%2C%20Asset%2C%20Sector%2C%20Account%0AAAPL%2C%206000%2C%20Stocks%2C%20Technology%2C%20Brokerage%0ABND%2C%203000%2C%20Bonds%2C%20Bonds%2C%20IRA%0ACash%2C%201000%2C%20Cash%2C%20Cash%2C%20Savings&group_by=asset&sort=value&top_n=0¤cy=%24`
---
## What this tool does
Portfolio allocation is the percentage split of your holdings: how much sits in stocks, bonds, cash, one sector, one account, or one oversized position. Paste rows from a broker export or spreadsheet and this tool groups the values, calculates each slice's percent of the total, and returns a chart-ready table with proportional bars.
The conversion runs locally in WebAssembly. Nothing is uploaded, and the output is plain text you can paste into a report, spreadsheet, or charting tool.
## Input format
Use CSV or tab-separated rows. A header row is allowed and skipped automatically:
```text
Name, Value, Asset, Sector, Account
AAPL, 6000, Stocks, Technology, Brokerage
BND, 3000, Bonds, Bonds, IRA
Cash, 1000, Cash, Cash, Savings
```
Columns after value are optional. If you group by a missing field, the holding lands in `(unspecified)`.
Values can be plain numbers, currency amounts, accounting negatives, or a quick shares-at-price expression:
- `6000`
- `$1,234.50` (tab-separated rows work best when using thousands commas)
- `(500)` for a negative value
- `10 @ 150` or `10 x 150` for shares times price
## Options
| Option | Choices | What it does |
| --- | --- | --- |
| **Group by** | `asset` (default), `holding`, `sector`, `account` | Chooses the allocation dimension. |
| **Sort** | `value` (default), `label` | Sorts largest-first or alphabetically. Top-N is applied before label sorting. |
| **Top N slices** | `0` to `1000` | Use `0` to show everything, or keep the biggest N slices and fold the rest into `Other`. |
| **Currency prefix** | `$`, `€`, `£`, `USD`, blank | Prefix shown before values in the output table. |
## Example
With this input:
```text
Name, Value, Asset, Sector, Account
AAPL, 6000, Stocks, Technology, Brokerage
BND, 3000, Bonds, Bonds, IRA
Cash, 1000, Cash, Cash, Savings
```
Grouped by **asset**, the output starts:
```text
Allocation by asset class — $10,000.00 total across 3 holdings
Stocks $6,000.00 60.00% ██████████████·········· (1 holding)
Bonds $3,000.00 30.00% ███████················· (1 holding)
Cash $1,000.00 10.00% ██······················ (1 holding)
```
## FAQ
Is this financial advice?
No. It only calculates percentages from numbers you provide. It does not recommend trades, target allocations, or investments.
Can I paste a brokerage CSV export?
Yes, if you reduce it to the columns this tool expects: name, value, and optional asset, sector, and account. A spreadsheet copy-paste with tabs works well, especially for values that contain comma thousands separators.
What does Top N do?
Top N keeps the largest slices and folds the rest into an `Other` row. That is useful for charting a portfolio with many small positions while keeping the chart readable.
What is the concentration score?
The HHI score squares each slice's percentage and sums the result. Higher numbers mean more concentration. The tool labels the score as well diversified, moderately concentrated, or highly concentrated.
What are the limits?
The tool accepts up to 5 MB of pasted text and 100,000 holdings. It does not fetch live prices, identify tickers, infer sectors automatically, or connect to brokerage accounts.
## Related tools
- [Adjacency Matrix Converter](https://gizza.ai/tools/adjacency-matrix-converter/): Convert a graph between edge list, adjacency matrix, and incidence matrix — directed or undirected, weighted or not. Free, private, runs in your browser.
- [Amazon Order Analyzer](https://gizza.ai/tools/amazon-order-analyzer/): Paste an Amazon order-history CSV export to summarize total spend by month, top items, and category breakdowns. Browser-only, private, with Markdown or JSON output.
- [Avro to JSON Converter](https://gizza.ai/tools/avro-to-json/): Decode Apache Avro Object Container Files (.avro / OCF) to JSON, NDJSON, or the embedded schema — no .avsc needed, free and private in your browser.
- [Reconcile bank statement and ledger CSVs](https://gizza.ai/tools/bank-statement-reconcile/): Match bank-statement CSV rows to ledger rows by date, signed amount, and fuzzy memo similarity, with unmatched and suggested matches.
- [Base64 ⇄ Base64url Converter](https://gizza.ai/tools/base64url-converter/): Convert standard Base64 to URL-safe Base64url and back in your browser — swaps +/ for -_, handles = padding, auto-detects direction. Free, private, no sign-up.