DUOLABS
Work

Overseas stock investment service

We built new screens and maintained existing features in a brokerage's investment app where local investors overseas trade stocks, mutual funds, and ETFs in one place. We designed and implemented a chart of buying and selling by broker, an investment calendar that puts dividend dates on a calendar, and a portfolio screen that gathers the profit, loss, and weighting of holdings. A financial app loses trust the moment quotes lag or values disagree after returning to a screen, so we also tracked down and fixed defects in live quotes, order entry, and screen transitions. This ran in parallel with the same firm's app for another country.

Launch
2026
Client
Indonesia arm of a Korean securities firm
Type
Investing & Assets
01 / 04

A chart that lines up who is buying and who is selling, broker by broker

The broker chart shows, for a single stock, how much each brokerage is buying and selling. To make it easy to compare at a glance which market participants are behind the buying and the selling, we shaped the incoming data for the chart and decided how the chart is laid out. Screen states while the data loads or when it is empty were handled as well.

A chart that lines up who is buying and who is selling, broker by broker
02 / 04

An investment calendar that pins dividend dates to the day

The investment calendar shows key investment dates, such as dividend payment dates and ex-dividend dates, on a calendar. Events are pinned to their dates, the calendar moves month by month, and tapping a date opens the details for that day. Screens for when there are no events and while data is loading were worked out separately.

An investment calendar that pins dividend dates to the day
03 / 04

A portfolio that puts value, profit, and weighting on one screen

The portfolio screen gathers the market value, profit and loss, return, and per-stock weighting of holdings on one screen. We arranged the order and grouping of information so investors can read the state of their account first, without hunting for each number. The standard for this screen was that profit and weighting stay readable at a glance even with many holdings.

A portfolio that puts value, profit, and weighting on one screen
04 / 04

A floating price ticker and order modes that switch without leaving the screen

The floating ticker is a small element that keeps showing a chosen stock's price move while the app is in use. Investors pin stocks they follow as these tickers and keep seeing price moves while moving between other menus. Like a widget, the ticker can be dragged to any spot on the screen. We had it reflect live price changes, keep its state across screen changes, and appear in a way that does not get in the way of other actions. On the order screen, the trading mode changes without leaving the menu, and we reinforced the flow so each mode's keypad, inputs, and quantity calculated from a target amount work reliably.

A floating price ticker and order modes that switch without leaving the screen

Highlights

01

A chart comparing buying and selling by broker

02

An investment calendar with dividend payment and ex-dividend dates

03

A floating price ticker across the app, and order-mode switching without leaving the screen

Insights

Read the blog