The CommBank app for Apple Watch has been added to CBA's suite of mobile and online trading options, according to a statement from the bank.
CBA has also launched an Android Wear app that will offer "everyday mobile banking essentials".
CommSec executive general manager Paul Rayson said the new Apple Watch app will deliver a "convenient, secure and personalised trading experience" to customers.
"Since the launch of our mobile app, we’re seeing more of our customers use their phone to get market information and make trades," Mr Rayson said.
"Around 25 per cent of logins and 11 per cent of trades are now performed on mobile devices," he said.
"Our CommSec Apple Watch app complements our mobile app, allowing our customers to monitor the market and their portfolio when and how they choose," Mr Rayson said.
CBA Apple Watch users will be able to view their share portfolios, individual share holdings and cash balances; view share watchlists; receive share price, volume and news alerts; use Apple Glances to instantly view ASX 200 movements; and use Siri to get live share prices, the statement said.
"The CommSec Apple Watch app provides convenient access to real time market data, alerts and personal portfolio information. To make a trade, customers have the option of executing via the CommSec Mobile app, website or by phone," CBA said.
The bank has also introduced touch ID on its iPhone apps.