At a glance
Amkor Technology Inc is worth $10.46B, about 28 times its fiscal 2025 earnings. Revenue grew 6.2% to $6.71B in fiscal 2025, with 5.6% kept as profit; over 5 years it has grown 5.8% a year. It pays a 0.77% dividend yield, and returned $441.6M to shareholders in dividends and buybacks over FY2021–FY2025. The stock returned +32.1% over the past year with dividends reinvested and +15.3% a year over five years, against +11.5% and +11.7% for the S&P 500. At its worst it fell 55.5% in the 2020 crash (S&P 500: 33.7%) and 40.9% in the 2022 bear market (S&P 500: 24.5%), and was back at its earlier high 4 months and 5 months after the lows.
The business in plain English
Amkor Technology handles the final steps of chip manufacturing for other companies. After a chip is made on a silicon wafer, it must be packaged (sealed in a protective casing with connections to the rest of a device) and tested. Amkor calls itself the world's largest U.S.-headquartered outsourced semiconductor assembly and test provider, or OSAT. Its services run from package design through packaging, testing and shipping finished parts. Customers pay for whichever steps they hand over.
Customers include fabless chip companies, which design chips but own no factories, and integrated device manufacturers, which make their own chips but outsource some work. Electronics makers and contract chip factories, called foundries, also use Amkor. The chips go into smartphones, data centers, artificial intelligence systems, cars and wearables. In fiscal 2025, revenue was $6.71 billion. Advanced products brought in 82.8% of that, and mainstream products brought in 17.2%.
The United States accounted for 65.6% of fiscal 2025 revenue. The Europe, Middle East and Africa region added 12.7%, Asia Pacific outside Japan 10.9% and Japan 10.8%. Amkor's factories are in Asia and Europe, including a Vietnam plant that opened in 2024. Construction of an Arizona facility began in the second half of 2025. Margins are thin. Gross margin, the share of revenue left after direct production costs, was 14% in fiscal 2025.
Price history
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AMKR +32.1% over the year to Oct 28, 2026, total return with dividends reinvested.
How it makes money
By product or service
| Advanced Products | $5.56B | 82.8% |
| Mainstream Products | $1.15B | 17.2% |
By geography
| United States | $4.40B | 65.6% |
| Europe, Middle East and Africa | $852.8M | 12.7% |
| Asia Pacific (excluding Japan) | $733.5M | 10.9% |
| Japan | $724.6M | 10.8% |
Latest results
- In Q3 FY2026 (ended Sep 30, 2026), revenue was $1.99B, up 0.2% from a year earlier, and net income was $190.6M (+50.6%).
- For fiscal 2025, revenue was $6.71B (+6.2% year over year; +5.8% a year from FY2020 to FY2025) with a 5.6% net margin.
Financial health check
| Revenue growth a year (FY2020–FY2025) | +5.8% good |
|---|---|
| Operating margin | 7% watch |
| Free cash flow margin | 2.8% watch |
| Return on equity (FY2025) | 8.4% watch |
| Return on assets (FY2025) | 4.6% watch |
| Net cash (cash minus debt) | $-119.6M watch |
| Fiscal year | Revenue | Net income | Free cash flow |
|---|---|---|---|
| FY2020 | $5.05B | $338.1M | $217.0M |
| FY2021 | $6.14B | $643.0M | $341.5M |
| FY2022 | $7.09B | $765.8M | $190.5M |
| FY2023 | $6.50B | $359.8M | $520.6M |
| FY2024 | $6.32B | $354.0M | $345.1M |
| FY2025 | $6.71B | $373.9M | $191.0M |
Valuation snapshot
| Market value | $10.46B |
|---|---|
| P/E ratio | 28.1 |
| Dividend yield | 0.77% |
Rank among 1514 US companies
Market value at each year end
Amkor Technology’s market value went from $2.51B at the end of 2016 to $10.46B on Oct 28, 2026, about 4.2 times as much; since the end of 2025 it is up 7%.
Show as a table
| Year end | Market value | Change |
|---|---|---|
| Oct 28, 2026 | $10.46B | +7.2% |
| 2025 | $9.76B | +54.0% |
| 2024 | $6.34B | -22.5% |
| 2023 | $8.18B | +39.2% |
| 2022 | $5.87B | -3.1% |
| 2021 | $6.06B | +65.8% |
| 2020 | $3.66B | +17.3% |
| 2019 | $3.12B | +98.4% |
| 2018 | $1.57B | -34.7% |
| 2017 | $2.40B | -4.1% |
| 2016 | $2.51B |
Price behavior
| YTD | 1 yr | 3 yr | 5 yr | 10 yr | |
|---|---|---|---|---|---|
| AMKR price data to Oct 28, 2026 | +7.4% | +32.1% | +28.7% | +15.3% | +17.4% |
Show as a table
| Year | Price data |
|---|---|
| 2026 (to date) | +7.4% |
| 2025 | +55.8% |
| 2024 | -20.8% |
| 2023 | +40.4% |
| 2022 | -2.3% |
| 2021 | +65.6% |
| 2020 | +16.3% |
| 2019 | +98.2% |
| 2018 | -34.7% |
| 2017 | -4.7% |
| 2016 | +73.5% |
| 2015 | -14.4% |
| 2014 | +15.8% |
| 2013 | +44.5% |
| 2012 | -2.7% |
| 2011 | -41.2% |
| 2010 | +3.5% |
| 2009 | +228.4% |
| 2008 | -74.4% |
| 2007 | -8.7% |
| 2006 | +66.8% |
| 2008 financial crisis stocks fell Oct 9, 2007 – Mar 9, 2009 | Lost 85.6% over that stretch · deepest drop along the way 87.5%, back to its old high 131.2 months after the low |
|---|---|
| 2020 COVID crash stocks fell Feb 19, 2020 – Mar 23, 2020 | Lost 43.8% over that stretch · deepest drop along the way 55.5%, back to its old high 4.3 months after the low |
| 2022 bear market stocks fell Jan 3, 2022 – Oct 12, 2022 | Lost 34.5% over that stretch · deepest drop along the way 40.9%, back to its old high 4.5 months after the low |
Insider activity
Form 4 filings from 2025-10-29 to 2026-10-29 (25 read): 0 open-market purchases and 11 sales ($4.3M), 8 of them under pre-arranged 10b5-1 trading plans.
| Date | Insider | Type | Value |
|---|---|---|---|
| Aug 5, 2026 | Guillaume Marie Jean Rutten Director | sell | $1.4M |
| Aug 6, 2026 | Guillaume Marie Jean Rutten Director | sell | $1.4M |
| Jul 16, 2026 | Mark N Rogers EVP & General Counsel | sell (plan) | $326K |
| Aug 17, 2026 | Mark N Rogers EVP & General Counsel | sell (plan) | $299K |
| Aug 7, 2026 | Douglas A Alexander Director | sell (plan) | $279K |
Who owns it
Large shareholders (13G filings)
| Dimensional Fund Advisors LP | 4.4% | Mar 31, 2026 |
ETFs with the most weight in AMKR
| PSI Invesco Semiconductors ETF | 2.65% |
| FXL First Trust Technology AlphaDEX Fund | 1.79% |
| FNK First Trust Mid Cap Value AlphaDEX Fund | 0.78% |
| RFV Invesco S&P MidCap 400® Pure Value ETF | 0.51% |
| QQQS Invesco NASDAQ Future Gen 200 ETF | 0.48% |
| ROSC Hartford Multifactor Small Cap ETF | 0.48% |
| QMID WisdomTree U.S. MidCap Quality Growth Fund | 0.43% |
| FNX First Trust Mid Cap Core AlphaDEX Fund | 0.39% |
What could go wrong
- Reliance on key customers and end markets. Losing a major customer or seeing orders cut could hurt results. Sales are concentrated in mobile communications and automotive. Customer commitments are short-term, so Amkor has no order backlog to cushion a slowdown.
- Big factory spending could outrun demand. Amkor spends heavily on equipment and plants, including an Arizona facility where construction began in the second half of 2025. If customer demand does not develop as expected, those investments could weigh on results.
- Thin margins depend on busy factories. Much of Amkor's cost is fixed, so chip-industry downturns that leave factories underused can squeeze profits. Gross margin was 14% in fiscal 2025, and its prices have historically faced downward pressure.
- Trade curbs and regional conflict. Amkor's factories, and many of its customers and suppliers, are outside the United States. Tariffs, export controls, customs duties or regional conflict could disrupt production or raise costs.
- One family holds major voting influence. Susan Y. Kim and members of her family can effectively decide or strongly influence the outcome of shareholder votes. Other shareholders may have limited say on major decisions.
- Sizable debt with some variable rates. Total debt was $2.50 billion as of September 30, 2026, slightly more than cash and investments of $2.38 billion. Some borrowing carries variable rates, so higher interest rates would raise costs.
Recent events
- Quarterly results released
- Quarterly results released
- Investor presentation or announcement
- Shareholder vote results
- Major agreement signed; New debt or financial obligation; Unregistered sale of shares
- Other company announcement
- Quarterly results released
- Other company announcement
- Quarterly results released
- Executive or board change
For income and retirement investors
Amkor pays a small dividend. The yield was 0.77% as of October 28, 2026. Dividends per share rose each year from $0.04 in fiscal 2020 to about $0.72 in fiscal 2024, then fell to about $0.33 in fiscal 2025. The fiscal 2025 dividend used 21.9% of earnings and 42.9% of free cash flow (cash left after capital spending). The company warns it may cut or suspend the dividend. Amkor bought back no shares from fiscal 2021 to 2025.
The stock fell 87.5% during the 2008 financial crisis and did not regain its early-2008 peak until October 2019. It dropped 55.5% in the 2020 COVID crash and 40.9% in the 2022 bear market, recovering within about five months each time. In the year to October 28, 2026, it fell as much as 60.6% from a peak. With a modest yield and large price swings, Amkor offers little steady income. Single stocks carry more risk than diversified funds.
Questions investors ask
How does Amkor Technology make money?
Amkor earns fees for packaging and testing chips that other companies design or make. Packaging seals a chip in a protective casing and connects it to the rest of a device. Customers include fabless chip designers, integrated device manufacturers, electronics makers and contract foundries. In fiscal 2025, revenue was $6.71 billion and net income was $373.9 million, about 5.6 cents of profit per dollar of sales. In the quarter ended September 30, 2026, revenue was $1.99 billion, roughly flat from a year earlier, while net income rose 50.6%.
Is Amkor an AI stock?
Partly. Amkor does not design artificial intelligence (AI) chips. It packages and tests chips for AI uses, and its annual report names AI and high-performance computing as key markets. Its advanced packaging can combine high-bandwidth memory and graphics processors in a single package. Amkor also serves smartphones, cars and wearables, and its sales are concentrated in mobile communications and automotive. Its results depend on much more than AI demand.
Does Amkor raise its dividend every year?
No. Dividends per share rose each year from $0.04 in fiscal 2020 to about $0.72 in fiscal 2024, then fell to about $0.33 in fiscal 2025. The yield was 0.77% as of October 28, 2026, and the fiscal 2025 dividend used 21.9% of earnings. Amkor's annual report warns that it may decrease or suspend its quarterly dividend, which could hurt the share price.
How volatile is Amkor stock?
Very volatile. As of October 28, 2026, its one-year beta was 3.47. Beta measures how much a stock tends to move with the overall market, so this means swings roughly three and a half times as large. Over that year the shares fell as much as 60.6% from a peak, yet the price still rose 32.1%. In the 2008 financial crisis they fell 87.5% and did not regain their prior peak until October 2019.
Is Amkor building a factory in Arizona?
Yes. According to its annual report filed February 20, 2026, construction of Amkor's Arizona facility began in the second half of 2025. The company believes it will help serve customers who want to keep supply chains within their own region and strengthen its role in U.S. semiconductor initiatives. Its other factories are in Asia and Europe, including a Vietnam plant that opened in 2024. Amkor lists heavy spending on facilities as a risk if demand falls short.