Zilltek Technology Corp.

TPEX:6679 Stock Report

Market Cap: NT$15.9b

Zilltek Technology Past Earnings Performance

Past criteria checks 4/6

Zilltek Technology's earnings have been declining at an average annual rate of -9.3%, while the Semiconductor industry saw earnings declining at 5.2% annually. Revenues have been declining at an average rate of 5.7% per year. Zilltek Technology's return on equity is 7.8%, and it has net margins of 22.7%.

Key information

-9.31%

Earnings growth rate

-16.36%

EPS growth rate

Semiconductor Industry Growth19.89%
Revenue growth rate-5.70%
Return on equity7.82%
Net Margin22.73%
Last Earnings Update31 Mar 2026

Recent past performance updates

Recent updates

Analysis Article Apr 15

Is There An Opportunity With Zilltek Technology Corp.'s (GTSM:6679) 27% Undervaluation?

In this article we are going to estimate the intrinsic value of Zilltek Technology Corp. ( GTSM:6679 ) by taking the...
Analysis Article Apr 01

Is Zilltek Technology Corp. (GTSM:6679) The Right Choice For A Smart Dividend Investor?

Could Zilltek Technology Corp. ( GTSM:6679 ) be an attractive dividend share to own for the long haul? Investors are...
Analysis Article Mar 11

Does Zilltek Technology's (GTSM:6679) Share Price Gain of 89% Match Its Business Performance?

These days it's easy to simply buy an index fund, and your returns should (roughly) match the market. But if you pick...
Analysis Article Feb 16

Is Zilltek Technology Corp.'s(GTSM:6679) Recent Stock Performance Tethered To Its Strong Fundamentals?

Zilltek Technology (GTSM:6679) has had a great run on the share market with its stock up by a significant 23% over the...
Analysis Article Jan 26

When Should You Buy Zilltek Technology Corp. (GTSM:6679)?

Zilltek Technology Corp. ( GTSM:6679 ), is not the largest company out there, but it received a lot of attention from a...

Revenue & Expenses Breakdown

How Zilltek Technology makes and spends money. Based on latest reported earnings, on an LTM basis.


Earnings and Revenue History

TPEX:6679 Revenue, expenses and earnings (TWD Millions)
DateRevenueEarningsG+A ExpensesR&D Expenses
31 Mar 261,983451252254
31 Dec 251,966365240238
30 Sep 252,005318252238
30 Jun 252,046217246239
31 Mar 252,134435265232
31 Dec 242,114477274226
30 Sep 242,131426244221
30 Jun 242,125504247200
31 Mar 241,987472240182
31 Dec 231,840373220159
30 Sep 231,646349226113
30 Jun 231,598329243112
31 Mar 231,819390253113
31 Dec 222,146516288127
30 Sep 222,447628285148
30 Jun 222,734672265148
31 Mar 222,793680259137
31 Dec 212,735625226132
30 Sep 212,665576230116
30 Jun 212,432475216102
31 Mar 212,15137619595
31 Dec 201,89830918278
30 Sep 201,71225416477
30 Jun 201,58821916269
31 Mar 201,48819016565
31 Dec 191,39516216162
30 Sep 191,29914216257
30 Jun 191,20912315756
31 Mar 191,16211215453
31 Dec 181,10310914152
30 Sep 181,0109213653
30 Jun 188837012051
31 Mar 18743519847
31 Dec 17686339541
30 Sep 17646348035
30 Jun 17625367632
31 Mar 17568247432
31 Dec 16510117231
31 Dec 1535844426

Quality Earnings: 6679 has high quality earnings.

Growing Profit Margin: 6679's current net profit margins (22.7%) are higher than last year (20.4%).


Free Cash Flow vs Earnings Analysis


Past Earnings Growth Analysis

Earnings Trend: 6679's earnings have declined by 9.3% per year over the past 5 years.

Accelerating Growth: 6679's earnings growth over the past year (3.7%) exceeds its 5-year average (-9.3% per year).

Earnings vs Industry: 6679 earnings growth over the past year (3.7%) exceeded the Semiconductor industry 2.9%.


Return on Equity

High ROE: 6679's Return on Equity (7.8%) is considered low.


Return on Assets


Return on Capital Employed


Discover strong past performing companies

Company Analysis and Financial Data Status

DataLast Updated (UTC time)
Company Analysis2026/06/03 17:06
End of Day Share Price 2026/06/03 00:00
Earnings2026/03/31
Annual Earnings2025/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

PackageDataTimeframeExample US Source *
Company Financials10 years
  • Income statement
  • Cash flow statement
  • Balance sheet
Analyst Consensus Estimates+3 years
  • Forecast financials
  • Analyst price targets
Market Prices30 years
  • Stock prices
  • Dividends, Splits and Actions
Ownership10 years
  • Top shareholders
  • Insider trading
Management10 years
  • Leadership team
  • Board of directors
Key Developments10 years
  • Company announcements

* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Zilltek Technology Corp. is covered by 4 analysts. 1 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

AnalystInstitution
Yucheng LiuKGI Securities Co. Ltd.
Chelsey SuMasterlink Securities Investment Advisory
Wen-wen WangSinoPac Securities Investment Service