Amkor Technology, Inc. provides outsourced semiconductor packaging and test services in the United States, Japan, Europe, and the Asia Pacific.
More about this company
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.
Not currently held by tracked 13F filers — this page aggregates activist, insider, politician and research activity.
Beyond 13F — activists, insiders, politicians & research
| Filed | Form | Activist | % of class | Conviction | |
|---|
| 2026-05-05 | SCHEDULE 13D/A | KIM JAMES J | 30.4% | Med | filing |
| 2026-02-17 | SCHEDULE 13D/A | KIM JAMES J | 30.5% | Med | filing |
3 disclosed trade(s) by 1 filer(s).
1 disclosed trade(s) by 1 filer(s).
Bullish · 10 mention(s), 1 personal-position post(s) · first 2025-12-05 · last 2026-07-13
“@GoldenMeth IMO $AEHR is a great long here and should hit its inflection point in the next few months like $AAOI.
$AMKR better to wait next year since they’re in capex phase and their buildout comes online late 2027 or 2028 if I remember correctly.
$FORM was a fan this yr” post →
All 10 tweet(s) mentioning this ticker
| Date | Tweet |
|---|
| 2026-07-13T00:45:13 | Just a semi recap TLDR:
- $GLW glass bridge per Morgan Stanley has potential, but hard to displace FAU (like FOCI) in short term
- $SPCX Starlink Gen 3 is scaling to 100,000 units (10x prev gen) creating possible capacity constraints for suppliers of switches to CCL.
- PCB supply shortages are pr… → · 2042 likes · 666,769 views |
| 2026-04-24 | Just putting out there...
Would have been +15.02% in 2W equal-weighted return.
On 30 different stocks... mostly medium-large cap.
1. $INTC +29.62%
2. $MRVL +40.95%
3. $TSM +4.72%
4. $COHR +18.9%
5. $RKLB +26.76%
6. $DRAM +12.29%
7. $AVGO +18.32%
8. $AMZN +9.17%
9. $ARM +36.6%
10. $TSEM -1.25%
11… → · 1643 likes · 317,745 views |
| 2026-03-24 | @GoldenMeth IMO $AEHR is a great long here and should hit its inflection point in the next few months like $AAOI.
$AMKR better to wait next year since they’re in capex phase and their buildout comes online late 2027 or 2028 if I remember correctly.
$FORM was a fan this yr → · 100 likes · 33,907 views |
| 2026-02-24 | Year to Date: 412.72%
Lot of it is just picking the right sector, profiting off of Jane Street algos weekly, and a bit of luck.
In terms of bottleneck longs, these are currently my favorite:
1. Memory - Samsung, Sk Hynix, $SNDK, $MU, $SIMO
2. Photonics - $LITE, $COHR, $AAOI, $AXTI, (maybe Ya… → · 3849 likes · 1,001,737 views |
| 2026-01-24 | The potential SiC (Silicon Carbide) Interposer bottleneck stack for $NVDA Rubin and Hyperscaler ASICs (if you didn't like $WOLF):
Downstream SiC:
$TSM - SiC for CoWoS interposers
$AMKR - S-SWIFT packaging for SiC integration
$ASX- VIPack platform and optical integration.
SiC Midstream:
$KLAC - Si… → · 231 likes · 83,464 views |
| 2026-01-22 | Memory Supercycle Supply Chain TLDR:
US Sleeper HBM4/Memory alpha picks that benefit from $MU and SK/Samsung:
$VECO ($2B) -Laser annealing
$PLAB ($2.1B) - Lithography photomask
$ADEA ($2.18B) - Hybrid bonding
$ACLS ($2.9B) - Ion implantation
$FORM ($6.43B) - HBM wafer testing
$ONTO ($10.6B) - Pack… → · 1242 likes · 353,393 views |
| 2026-01-19 | US Futures are down due to Greenland Tariff news.
Many popular names on EU stock exchanges are now down:
$ONDS (-8.55%) or $RKLB (-7.65%).
Here's how to potentially profit off the situation:
Tier 1: Supply Chains
This is a dispute with NATO Allies. This threatens supply chains.
Many US defen… → · 600 likes · 269,001 views |
| 2025-12-08 | Stock position updates:
Sitting on high-conviction longs like $NBIS and writing options, relatively lax weekend.
Minor position adds updates from last week:
$LITE - $316.5 (+5.53%) -> ~$335.91
Lite benefits from $NVDA Blackwell + $GOOGL v7 TPU rampup
$AMKR - $37.6 (+18.4%) ~$44.5
Benefits fro… → · 88 likes · 41,970 views |
| 2025-12-05 | I've actually posted a breakdown + talked about each individual stock up there before if you follow what I normally post. This is just a consolidated list from history.
For example I posted a deeper dive on TPU v7 ironwood supply chain not too long ago ( $COHR, $AMKR, $LITE, $MPWR). And I post DD … → · 10 likes · 2,237 views |
| 2025-12-05 | As of current prices, December 5th:
The ideal AI portfolio for the LLM + TPU/GPU ramp would look like this:
· 25% $NBIS
· 15% $TSM
· 12.5% $LITE
· 10% $ALAB
· 10% $SMCI
· 10% $AMKR
· 5% Samsung Electronics
· 5% SK Hynix
· 5% $CRDO
· 5% $CLS
· 5% $COHR
· 5% $NVDA Calls
· 2.5% $AVGO Calls
· 2.5% $… → · 272 likes · 63,839 views |
| Report | Date | Stance |
|---|
| #112 — Carving Up the TPU: Leftovers for Jensen or Just Gravy on the AI Trade? | 2025-11-27 | LONG |