Overview
A Custom Investment is a holding inside Navexa for assets that do not have a live data feed in our system.
Navexa treats it like any other holding:
You record buys and sells
You can add income such as rent, coupons or dividends
You can update the price whenever you want the valuation to change
There is no automatic pricing or corporate actions on a Custom Investment. You control all the inputs.
Technical description: what a Custom Investment really is
Under the hood, a Custom Investment is just a generic holding that uses the same engine as shares and ETFs, but without a linked exchange or data provider.
It consists of three main parts.
Instrument definition
Symbol or name (what you see in the holdings list)
Currency
Optional notes
Trade ledger
A list of Buy and Sell records with:
Trade date
Quantity (units)
Price per unit
Fees and other costs
Optional exchange rate for foreign currency
From this, Navexa calculates:
Cost base
Proceeds on sale or redemption
Capital gain or loss
Price and income timeline
Income entries you add manually, for example, rent, coupons, dividends or distributions
Price updates you add manually, which set a new price per unit from a given date forward
Navexa then applies the same performance and tax calculations it uses for regular holdings. The only difference is that every price, trade and income entry for a Custom Investment comes from you, not from an exchange feed or broker integration.
If you can describe an asset like this:
I bought a certain quantity for a certain price
I may receive income from it
I may update its value from time to time
I may sell it or let it mature in the future
then it probably fits into a Custom Investment.
What you can track with a Custom Investment
Because Custom Investments are just trades, optional income and optional price updates, they work well for many off-market assets, for example:
Investment property
Buy and sell trades for purchase and sale
Income entries for rent
Price updates when you get a new valuation
Corporate or OTC bonds
Buy and sell trades using a clean price or dirty price method
Income entries for coupons and accrued interest received
Optional price updates if you want to reflect market changes before maturity
Private company shares or unlisted equity
Trades for each capital raise or liquidity event
Income entries for dividends
Price updates for new valuations or funding rounds
Art and collectibles
Trades for buy and sell
Income entries, if any, for example, exhibition fees
Price updates for appraisals or insurance valuations
Managed accounts or app-based portfolios where you only have statements or CSVs
Represent the total investment as one Custom Investment
Import or key trades to track cost base and performance
Add income as distributions
In each case, you are fitting the asset into Navexa’s model of buy, optional income, optional price updates, then sell or mature.
When Custom Investments are not a good fit
Custom Investments are powerful, but there are limits.
They are not ideal for:
Complex derivatives such as options, futures or CFDs that need intraday or tick level detail
Instruments that require full specialist bond analytics such as built in yield calculators or callable features
Bank accounts or term deposit accounts that behave like cash, which are better tracked with a Cash Account
If the asset cannot be represented as sensible buys and sells plus occasional income and a few price updates, the results in Navexa may not be realistic.
What Custom Investments do
Track cost base, proceeds and capital gain or loss from your trades
Let you add income entries such as rent, interest, coupons or dividends
Let you update price when you get a new valuation
Include the asset in your portfolio performance, allocation and tax reports alongside regular holdings
Allow imports from a spreadsheet when you reshape your data into the Navexa columns
What Custom Investments do not do
No live price feed, prices only change when you update them
No automatic corporate actions, splits and restructures are modeled with trades
No direct contract note inbox imports, broker emails do not create Custom Investments
No dedicated bond or derivative engine