Amkor Technology (STU:AMK) Total Operating Expense: €416 Mil (TTM As of Mar. 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

STU:AMK Amkor Technology Inc STU:AMK
73 GF Score
Price €61.67
GF Value €28.38
Valuation Significantly Overvalued
! 6 Warning Signs
View Full Analysis

What is Amkor Technology Total Operating Expense?

Amkor Technology STU:AMK +6.29% 73 Total Operating Expense is €416 Mil as of Mar. 2026. GuruFocus rates STU:AMK with a GF Score™ of 73/100 and a GF Value™ of €28.38 (Significantly Overvalued). The stock has 6 warning signs investors should review.

Amkor Technology's Total Operating Expense for the three months ended in Mar. 2026 was €120 Mil. Amkor Technology's Total Operating Expense for the trailing twelve months (TTM) ended in Mar. 2026 was €416 Mil.


Amkor Technology Total Operating Expense Related Terms


Amkor Technology Total Operating Expense Historical Data

* Premium members only.

The historical data trend for Amkor Technology's Total Operating Expense can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Amkor Technology Total Operating Expense Chart

Amkor Technology Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Total Operating Expense
Get a 7-Day Free Trial Premium Member Only Premium Member Only 408.98 408.56 433.62 472.49 402.42

Amkor Technology Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Total Operating Expense Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 116.61 77.97 106.98 110.73 120.02
STU:AMK
73GF Score
Amkor Technology Inc STU:AMK
Total Operating Expense is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Amkor Technology Total Operating Expense Calculation

Total Operating Expense is the primary recurring expense associated with central operations that are incurred in order to generate sales.


Total Operating Expense for the trailing twelve months (TTM) ended in Mar. 2026 adds up the quarterly data reported by the company within the most recent 12 months, which was €416 Mil.

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

What does a Total Operating Expense of €416 Mil mean?
Amkor Technology (STU:AMK) has a Total Operating Expense of €416 Mil as of Mar. 2026. Total operating expense is the primary recurring expense associated with central operations. View historical data on Amkor Technology and its competitors.
Is Amkor Technology's Total Operating Expense too high?
Amkor Technology's current Total Operating Expense is €416 Mil. Overall, Amkor Technology has a GF Score™ of 73/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Amkor Technology's Total Operating Expense compare to ONTO and NVMI?
Amkor Technology's Total Operating Expense of €416 Mil can be compared against companies in the Semiconductors industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Total Operating Expense for a Semiconductors company?
A good Total Operating Expense depends on the Semiconductors industry context. However, Total Operating Expense should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Total Operating Expense mean?
A high Total Operating Expense can signal that a stock is expensive relative to its fundamentals. Total operating expense is the primary recurring expense associated with central operations. View historical data on Amkor Technology and its competitors. Amkor Technology's current Total Operating Expense is €416 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Amkor Technology stock overvalued right now?
Based on GuruFocus' analysis, Amkor Technology (STU:AMK) is currently considered Significantly Overvalued. The stock's GF Value™ is €28.38, compared to a current price of €61.67 — trading 117.3% above its estimated fair value. The current Total Operating Expense is €416 Mil. Amkor Technology's overall GF Score™ is 73/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Total Operating Expense calculated?
Total Operating Expense is calculated from a company's financial statements. For Amkor Technology (STU:AMK), the current Total Operating Expense is €416 Mil as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is Amkor Technology (STU:AMK) Overvalued in 2026?

Based on GuruFocus' analysis, Amkor Technology stock appears to be overvalued. The current stock price of €61.67 is trading 117.3% above its estimated GF Value™ of €28.38. GuruFocus considers Amkor Technology to be Significantly Overvalued.

Key valuation signals for STU:AMK:

  • Total Operating Expense: €416 Mil
  • GF Value™: €28.38 vs. price of €61.67 (117.3% above fair value)
  • GF Score™: 73/100 with 6 warning signs

No single metric tells the full story. See the STU:AMK stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Amkor Technology Business Description

Other Exchanges AMKR:USAAMKR:Mexico
Address 2045 East Innovation Circle, Tempe, AZ, USA, 85284
Amkor Technology Inc is a OSAT (outsourced semiconductor assembly and test) service provider. It has pioneered the outsourcing of integrated circuit (IC) packaging and test services and is a strategic manufacturing partner for the semiconductor companies, foundries, and electronics original equipment manufacturers (OEMs). The firm's products are organized into two categories namely advanced products that include flip chip, fine pitch bumping, wafer-level processing, advanced SiPs, power modules, and others, and Mainstream products that includes wirebond packaging and testing. The company derives maximum revenue from the advanced products category. The company derives majority of its revenue from Foreign states.
73GF Score

Get the complete analysis for STU:AMK

Total Operating Expense is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€61.67
Price
€28.38
GF Value