Amkor Technology, Inc. (AMKR)

About Amkor Technology, Inc.

Amkor Technology, Inc. provides outsourced semiconductor packaging and test services in the United States, Japan, Europe, and the Asia Pacific. It offers turnkey packaging and test services, including semiconductor wafer bump, wafer probe, wafer back-grind, package design, packaging, burn-in, system-level and final test, and drop shipment services; flip chip scale package products for smartphones, tablets, and other mobile consumer electronic devices; flip chip stacked chip scale packages that are used to stack memory digital baseband, and as applications processors in mobile devices; flip-chip ball grid array packages for various networking, storage, computing, automotive, and consumer applications; and memory products for system memory or platform data storage. The company provides wafer-level CSP packages for power management, transceivers, sensors, wireless charging, codecs, and specialty silicon; wafer-level fan-out packages used in power management, transceivers, radar, and specialty silicon; silicon wafer integrated fan-out technology that replaces a laminate substrate with a thinner structure; leadframe packages for electronic devices and mixed-signal applications; and substrate-based wirebond packages used to connect a die to a substrate. In addition, it offers micro-electro-mechanical systems packages that are miniaturized mechanical and electromechanical devices; and advanced system-in-package modules used in radio frequency and front end modules, basebands, connectivity, fingerprint sensors, display and touch screen drivers, sensors and MEMS, and NAND memory and solid-state drives. Further, the company provides wafer, package, and system level test services, as well as burn-in test and test development services. It serves integrated device manufacturers, fabless semiconductor companies, original equipment manufacturers, and contract foundries. Amkor Technology, Inc. was founded in 1968 and is headquartered in Tempe, Arizona.

Company profile, industry and headcount are as reported by our data provider and can lag a company's own filings by a reporting period. The annual report is the authority.

Super investor ownership

12 of the funds we track reported a position in their latest SEC 13F filing. Largest first:

• Cliff Asness, AQR CAPITAL MANAGEMENT LLC$273.84M · 0.1% of book
• Steve Cohen, Point72 Asset Management, L.P.$213.62M · 0.2% of book
• Ken Fisher, Fisher Asset Management, LLC$157.07M · 0.1% of book
• Two Sigma, TWO SIGMA INVESTMENTS, LP$92.19M · 0.1% of book
• Ken Griffin, CITADEL ADVISORS LLC$88.66M · 0.0% of book

A word of warning on reading these figures: a 13F reports the market value of a holding, so a fund that traded nothing at all still appears to have sold when the price fell. We found 102 companies where the standard reading gives the opposite answer. Only the share count is honest.

Politician trades in AMKR

Trades in AMKR disclosed by members of Congress and executive-branch officials, latest first:

• Donald J Trump · Executive branchSell · $100,001 - $250,000 · traded 18 May 2026 · disclosed 1 Jul 2026
• Markwayne Mullin · Executive branchSell · $15,001 - $50,000 · traded 16 Apr 2026 · disclosed 25 Jul 2026
• Markwayne Mullin · Executive branchSell · $50,001 - $100,000 · traded 15 Apr 2026 · disclosed 25 Jul 2026

A disclosure reports a value band, not an amount, and is due up to 45 days after the trade; some arrive later. Every filer we track, each with their own page, is on the Congress trading tracker.

Common questions