AMKR (Amkor Technology, Inc.): Themes, ETFs, and Basket Ideas
AMKR is the ticker for Amkor Technology, Inc.. This page covers what the company does, where it's heading, its approximate earnings and valuation, key competitors, the themes it belongs to, the ETFs that hold it, and similar stocks worth looking at.
What does Amkor Technology, Inc. do?
Amkor Technology is one of the world's largest outsourced semiconductor assembly and test (OSAT) providers. After chips are fabricated at TSMC, Samsung, Intel, or other foundries, they need to be packaged (mounted in protective enclosures, connected to external pins) and tested before being sold. Amkor performs this packaging and testing for major customers including Apple, NVIDIA, Qualcomm, AMD, and others.
Advanced packaging has become particularly important for AI accelerators because chiplet-based designs (multiple silicon dies connected in a single package) require sophisticated 2.5D and 3D packaging technologies. Amkor is one of three major OSAT providers (alongside ASE Technology and JCET Group) and the largest US-headquartered OSAT. Founded in 1968, headquartered in Tempe, Arizona. Giel Rutten has been CEO since 2020.
Where is Amkor Technology, Inc. heading?
1. Advanced packaging for AI accelerators.
AI accelerator chips (NVIDIA H100/Blackwell, AMD MI300X, custom hyperscaler silicon) use advanced packaging like CoWoS, fan-out wafer-level packaging, and chiplet integration. Amkor is investing in advanced packaging capacity and has won meaningful AI accelerator packaging business.
2. US fab investment and onshore packaging.
The CHIPS Act and broader reshoring push have driven interest in US-domestic semiconductor packaging capacity. Amkor announced a major new Arizona facility partly supported by CHIPS Act funding. This positions Amkor as the leading US-based OSAT alongside the TSMC Arizona fab.
3. Automotive electrification growth.
Each EV uses far more semiconductors than an ICE vehicle, and these chips require packaging. Automotive packaging is a meaningful and growing segment for Amkor.
4. OSAT industry consolidation and capacity discipline.
The three major OSAT players (Amkor, ASE, JCET) have practiced relatively disciplined capacity expansion. Maintaining discipline supports pricing and margins.
Risks worth tracking: OSAT margins are structurally lower than fabless designers or pure foundries. Capex requirements for advanced packaging are substantial. Customer concentration with the largest fabless designers is meaningful.
Earnings and valuation (approximate, early 2026)
A simple financial snapshot. These are approximations and refresh quarterly; for current figures see Amkor Technology, Inc.'s investor relations page or your broker.
- Revenue (TTM): ~$6 billion
- Operating margin: ~8% (thin, typical for OSAT)
- Net income (TTM): ~$300 million
- EPS (TTM): ~$1.10
- P/E (TTM): ~25x
- Price to sales: ~1.5x
- Dividend yield: ~0.5%
- Free cash flow: ~$200 million annually (capex-heavy)
- Capex: ~$700 million annually for advanced packaging
Amkor trades at a modest multiple typical for the OSAT industry: thin margins, capex-heavy. The premium versus pure commodity OSATs comes from the advanced packaging mix shift and the US-domestic positioning.
Themes AMKR belongs to
These are the investment theses AMKR naturally fits into. Each links to a full theme guide listing every other stock that belongs and the ETFs commonly used as a passive proxy.
AMKR's competitors
Outsourced semiconductor assembly and test (OSAT)
ASE Technology Holding (Taiwan; the largest OSAT globally) is the primary competitor. JCET Group (China) is the third major player. Powertech Technology and Chipbond are smaller Taiwan-based competitors. The three largest (ASE, Amkor, JCET) together hold over half of global OSAT revenue.
In-house packaging by foundries
TSMC has its own packaging capacity (CoWoS) which it uses for advanced packaging of customer chips. Intel has integrated packaging. This is competitive pressure on independent OSATs at the leading edge.
Similar stocks
Other names that show up alongside AMKR in the same themes. Worth a look if you're thinking about diversification within a single thesis rather than concentration on one ticker.
Also fits AI infrastructure. The defining AI accelerator. CUDA ecosystem is the picks-and-shovels play; held in every AI infrastructure basket.
Also fits AI infrastructure. MI300X and MI400 are the most credible non-NVIDIA accelerator path. Datacenter GPU revenue is the AI exposure.
Also fits AI infrastructure. Custom AI silicon (Google TPU, Meta MTIA) plus the networking switches that connect AI clusters. Dual-engine AI infra story.
Also fits AI infrastructure. Makes virtually every leading-edge AI chip including NVIDIA H100/B100, AMD MI300X, and the hyperscaler custom designs.
Using AMKR in a Walnut basket
The most useful question to ask about a single stock is rarely “will it go up?”. It's “does this fit a thesis I actually believe in, and how do I size it alongside other stocks that fit the same thesis?” That's what Walnut is built for.
Open the AI assistant on Walnut and describe a thesis (for example: “the AI infrastructure buildout”, “dividend growth large-caps”, “global semiconductors”) where AMKR would naturally fit. The AI proposes 5 to 6 constituents with target weights, you review, and you can fund the basket through your broker once you're ready.
Build a basket around AMKR with Walnut
Use Amkor Technology, Inc. as one constituent in a thematic basket Walnut's AI helps you assemble. Describe a thesis you believe in, the AI proposes the holdings and weights, and you approve before any broker order.
FAQ
What is Amkor's ticker symbol?
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AMKR, listed on Nasdaq. Officially Amkor Technology, Inc. Founded 1968, headquartered in Tempe, Arizona. The largest US-headquartered OSAT (outsourced semiconductor assembly and test) provider.
Who are Amkor's competitors?
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ASE Technology (Taiwan) is the largest global OSAT and the primary direct competitor. JCET Group (China) is the third major player. Powertech and Chipbond are smaller Taiwan-based competitors. TSMC's in-house packaging (CoWoS) is competitive at the leading edge of advanced packaging.
Is Amkor an AI stock?
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Increasingly yes. AI accelerator chips use advanced packaging technologies (chiplets, 2.5D/3D integration) that Amkor specializes in. The company has won AI accelerator packaging business and is investing in advanced packaging capacity. The exposure is upstream from NVIDIA but in the same overall AI infrastructure trend.
What is Amkor's P/E ratio?
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Approximately 25x trailing twelve months as of early 2026. Modest premium to the S&P 500 average (~22x). Lower than fabless designers because OSAT margins are structurally thinner; the upside comes from advanced packaging mix shift.
What does Amkor do?
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Amkor performs semiconductor packaging and testing for fabless chip designers. After chips are fabricated at TSMC, Samsung, or Intel, they need to be packaged (mounted in protective enclosures, connected to external pins) and tested before being sold. Amkor is one of three major OSAT providers globally.
Who owns the most Amkor stock?
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The Kim family (founders) retains a controlling stake through Amkor Investment Holdings, holding around 60% of shares outstanding. This is unusually high concentration for a US-listed company. Major institutional holders include Vanguard and BlackRock at smaller percentages.
Which ETFs have the most Amkor exposure?
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SOXX (iShares Semiconductor) includes AMKR in its broader semiconductor universe. SMH's narrower top-25 methodology has not historically included AMKR. Specialty semiconductor and chip packaging ETFs hold AMKR at higher weights but those funds have low AUM. The Kim family's high ownership reduces public float, which limits AMKR's weight in most cap-weighted ETFs.
Which thematic baskets typically include Amkor?
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Two themes on Walnut. AI infrastructure (advanced packaging including CoWoS, fan-out, and chiplet integration is essential for AI accelerators) and Semiconductors (the largest US-headquartered OSAT). AI infrastructure baskets sometimes include AMKR as the packaging complement to TSM foundry and ASML lithography.
Is Amkor in the S&P 500?
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No. Amkor is included in mid-cap and semiconductor sector indices but not the S&P 500. The Kim family's 60% ownership reduces public float; many index providers have float-adjusted minimums that limit AMKR's inclusion in cap-weighted indices.
What is Amkor's market cap?
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Approximately $8 billion as of early 2026. Market cap has grown as AI advanced packaging revenue has scaled. AMKR is mid-cap compared to the largest semiconductor names but is the largest US-listed OSAT by market cap.
Does Amkor pay a dividend?
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Yes. AMKR yields approximately 0.5% as of early 2026, paid quarterly. The dividend is modest given the heavy capex investment cycle in advanced packaging capacity. Capital allocation has been prioritized for capex and debt service over capital return.
What is CoWoS and why does it matter?
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Chip-on-Wafer-on-Substrate is an advanced packaging technology developed by TSMC for high-bandwidth chip stacking. NVIDIA's H100, AMD's MI300X, and other AI accelerators use CoWoS for stacking HBM memory next to the GPU die. CoWoS capacity has been a key bottleneck for AI chip supply through 2023-2025. Amkor competes with similar advanced packaging technologies (fan-out wafer-level packaging) at OSAT scale.
How is Amkor's US fab plan different?
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Amkor announced a new Arizona advanced packaging facility partly supported by CHIPS Act funding. The facility will provide US-domestic packaging capacity to complement the TSMC Arizona fab, addressing supply chain reshoring concerns. The plan positions Amkor as the leading US-based OSAT alongside TSMC's Arizona presence; the capacity ramps through 2026-2028.
Should I own Amkor directly or through SOXX?
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Both common. Direct AMKR ownership gives concentrated OSAT exposure with the advanced packaging AI thesis. SOXX includes AMKR at modest weight along with broader semiconductor exposure. Many Walnut users hold AMKR as a smaller satellite position rather than a core holding because of the float concentration and the cyclical OSAT margin profile.
Walnut is informational, not investment advice. Financial figures on this page are approximations; always verify current numbers with Amkor Technology, Inc.'s investor relations page or your broker before making investment decisions.