Calculation transparency

Strum data and metrics methodology

How Strum obtains data, values portfolios, and calculates return, P&L, and risk. This page describes general product rules, not personalized financial advice.

Oleksandr Yutysh

Author

· Co-founder of Strum

01

Sources and update frequency

Market prices and financial metrics come from Yahoo Finance and other external financial-data providers. Market-instrument quotes are displayed with a 5-minute delay. Ukrainian government bonds and other bond data are updated once a day. Users set and update the value of custom assets themselves.

02

Portfolio value and currency conversion

Current portfolio value combines positions valued at the latest available price with cash balances. Historical charts use prices and exchange rates available for the relevant date; internal conversion helps compare results across currencies. Results may differ because of the trading session, time zone, quote source, or conversion rate.

03

Average cost, P&L, and cash flows

Average cost is calculated from entered or imported transactions. Realized results arise after a sale; unrealized results reflect changes in the value of open positions. Accuracy depends on complete trades, deposits, withdrawals, dividends, fees, and taxes in the source data. Amounts are shown in your display currency, while the percentage on an individual position is in the currency the asset itself trades in: the move from your average price, without any exchange-rate movement. For assets that do not trade in your currency, the amount and the percentage beside it therefore describe different things.

04

Returns: total profit, TWR, and XIRR

Total profit is your whole result together: unrealized and realized P&L, dividends, taxes, and other credits. As a percentage it is measured against net contributions, that is deposits minus withdrawals, a base you can reconcile with your bank statement. This is the headline figure and it is the same everywhere: on the dashboard, in analytics, on the portfolio card, and in the assistant answers. Two further returns sit alongside it and answer different questions. Asset return (TWR) chains sub-period returns and removes the effect of deposits and withdrawals, so it grades your choice of holdings rather than the timing of your contributions; CAGR expresses the same thing as an equivalent annual growth rate over a sufficiently long period. Your money return (XIRR) accounts for cash-flow amounts and exact dates and gives the annual rate on your money specifically; it is unavailable when data is insufficient or cash flows do not include both positive and negative values. The three figures for one portfolio are almost always different. That is not an error: they measure different things.

05

Dividend yield

We show dividend yield in two senses, and each one states its own period. The rate takes the last 12 months of payouts per share and divides by the current price: the expected level for the positions you hold now. Actually received takes what genuinely arrived during the selected year. The two differ by exactly the changes you made to the portfolio, which is why each carries its window: last 12 months, or a named year. Yield on cost uses the same payouts but measures them against what you paid rather than the current price.

06

Risk and drawdown

We show two different risk figures because they answer different questions. Volatility in Statistics is calculated from the portfolio's own history, including every change of holdings along the way. Risk in Fundamentals takes your positions as they stand today and revalues that exact set over price history, so earlier trades do not move it. Both are annualized when enough observations are available. Maximum drawdown is the largest decline from a prior peak to a subsequent low in the selected period. The expected 1-year decline bars in Fundamentals are not drawdown but a statistical estimate: a bound worse than which a year turns out roughly 16% and 2% of the time respectively. Past metrics do not guarantee future results.

07

Forecasts and limitations

Dividend forecasts, goals, and long-term scenarios are models based on selected assumptions. Expected return in Fundamentals is a model too: the beta of your holdings multiplied by the average return of their asset classes. It is not your result and not a forecast for any particular year; the bar next to it is what actually happened. Actual prices, payments, taxes, inflation, and returns may differ. Before making a financial decision, verify data with a broker, issuer, or another primary source.

Methodology described by Oleksandr Yutysh, co-founder of Strum.

Start using Strum for free

One platform for all your portfolios, assets and financial goals.

Start free