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Guide

Getting started with Omnicogi

Import your first portfolio, reconcile with a snapshot, and get to your true performance in a few steps.

Step 1 — Create a portfolio

After signing in, tap New Portfolio. Choose a wrapper type:

  • ISA — Stocks & shares ISA. Growth and income are tax-free. Annual allowance: £20,000.
  • SIPP — Self-invested personal pension. Contributions attract tax relief. Access from age 55 (rising to 57 in 2028).
  • GIA — General investment account. No wrapper. Capital gains and dividends are taxable above HMRC thresholds.
  • Taxable — For any other taxable holding (savings, property). No annual allowance restrictions.

You can create as many portfolios as you like — one per broker account is the most common setup.

Wrapper type affects tax calculations. If you have an ISA and a GIA with the same broker, create two separate portfolios so gains are correctly attributed.

Step 2 — Import your CSV

Export your transaction history from your broker as a CSV file. Omnicogi currently has structured support for Interactive Investor (more brokers are being added).

In Interactive Investor: log in → Portfolio → Transactions → Export. Download as CSV and save the file to your device.

In Omnicogi, tap your portfolio → Import → Upload CSV. The importer:

  • Detects and removes duplicate transactions automatically
  • Maps ticker symbols to global securities via ISIN and SEDOL lookup
  • Categorises each line: buy, sell, dividend, deposit, withdrawal, fee
  • Flags any rows it cannot resolve for your review
If you import the same CSV twice, Omnicogi deduplicates using transaction identifiers — you won't get duplicate records. However, always review the import summary for unresolved rows before proceeding.

Step 3 — Add a Snapshot

A Snapshot is a point-in-time record of what your portfolio actually held on a given date, taken from your broker's valuation statement. Adding a snapshot lets Omnicogi verify that the transaction ledger is complete and accurate.

Tap Add Snapshot, enter the date of the snapshot, and enter your holdings — quantity and value for each security, plus cash balance.

Omnicogi computes what your portfolio should look like on that date based purely on the transaction log, then compares it against the snapshot. If a holding doesn't match, there is a missing transaction (a dividend, stock split, or corporate action that wasn't in the exported CSV).

Once a snapshot reconciles successfully, all performance metrics from that date onward are validated data — not estimates. XIRR and TWR are marked as reliable.

Step 4 — Review your performance

Once your import is complete and at least one snapshot is reconciled, the dashboard shows:

  • XIRR — your money-weighted annualised return
  • TWR — time-weighted return, stripped of cash-flow timing
  • Clean Cash vs Generated Wealth — what you deposited vs what the market earned for you
  • Gap chart — your return vs FTSE 100, S&P 500, or MSCI World over the same period
  • Per-holding performance — XIRR and TWR for each individual security

Each metric displays a reliability badge: Reliable (full data), Caveated (minor gaps), or Unreliable (significant missing data). The badge links to a diagnostic explaining what's missing.

Next: Assets & Auto-Matching

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