國泰證券

3.7
3.24K reviews
500K+
Downloads
Content rating
Everyone
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About this app

1. Young People's Favorite Brokerage
Voted by the community as "Young People's Favorite Brokerage," more than one in three young investors open an account with Guotai Securities.
2. Ultra-Low Fees
No minimum fees for US stock trades, and regular investments in Taiwan and the US are highly cost-effective, making investing economical.
3. Instant Account Opening
Three steps, five minutes, dual investment accounts for Taiwan and US stocks.
4. Comprehensive Quotes
We offer Taiwan, US, Hong Kong, and ETFs, with a choice of dark and light color modes for a seamless experience.
5. A Great Assistant for Regular Investments
Nearly 40% of users choose Cathay Securities for regular investments. With "Smart Add/Subtract" and "Dividend Reinvestment" features, even lazy investors can invest smartly.
6. Graphical Inventory Overview
Integrates Taiwan, US, Hong Kong, Japanese, bonds, and SN securities, presenting a graphical inventory overview for a complete overview of your investments in seconds.
7. Emergency Stock Loan Tool
Quickly disburse funds in three minutes, 24/7 24-hour service, painless relief for short-term funding gaps.
8. New Stock Lending Options
Lend your inventory and create opportunities for idle assets to generate income.

Reminder: To ensure the security of your accounts and transactions, please install security software on your mobile device.
Updated on
Oct 14, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Photos and videos, Files and docs and 2 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

3.7
3.2K reviews
Laziz Nuridin
September 12, 2024
How can I change the language to English? If there's no such thing, make one as wlin the online banking app
2 people found this review helpful
Did you find this helpful?
國泰證券
September 10, 2024
親愛的客戶您好:我們會將您的建議反應給相關單位評估,再次感謝您的建議。
楊曜承(LuckyPig)
June 30, 2023
Dark Theme support needed!!!
1 person found this review helpful
Did you find this helpful?
國泰證券
July 3, 2023
親愛的客戶您好:已轉請相關單位評估,謝謝。
J
June 24, 2025
手機驗證碼收不到
Did you find this helpful?
國泰證券
June 27, 2025
親愛的客戶您好: 若您確認發送的手機號碼正確,且網路連線正常。請進一步確認看看簡訊儲存空間是否達到上限,若是請您刪除部分簡訊後,再重新開機試試,謝謝!

What’s new

【定期定額手續費延長至 2026】台美股定期定額手續費優惠再延長至 2026/12/31,繼續投資繼續省
【美股個股手續費】「我的」>「右上角更多」>「手續費專區」新增美股個股費用,投資成本清清楚楚
【境外 SN 帳務】新增「庫存與配息查詢」,海外資產一目了然

App support

About the developer
國泰綜合證券股份有限公司
casperkao@cathaysec.com.tw
106033台湾台北市大安區 敦化南路二段333號20樓
+886 2 7711 1104

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