W
WAVEMAN · COMPANY
AMKR · Amkor Technology, Inc.
> Ask across nine datasets ⌘K
LIVE
TEAM-2.62% 13F +440META+1.00% 13F +2,694RCG+0.35% CLUSTERUTHR-0.54% 13F +425CRWV+5.68% 13F +694CRM-1.97% 13F +1,019CVNA+1.58% 13F +795TPL-1.11% 13F +444NET-1.96% 13F +711MSTR-1.39% 13F +527DELL+1.50% 13F +1,204CRWD-0.87% 13F +1,383ANET+1.22% 13F +1,324COIN-4.18% 13F +475TEAM-2.62% 13F +440META+1.00% 13F +2,694RCG+0.35% CLUSTERUTHR-0.54% 13F +425CRWV+5.68% 13F +694CRM-1.97% 13F +1,019CVNA+1.58% 13F +795TPL-1.11% 13F +444NET-1.96% 13F +711MSTR-1.39% 13F +527DELL+1.50% 13F +1,204CRWD-0.87% 13F +1,383ANET+1.22% 13F +1,324COIN-4.18% 13F +475
← ALL COMPANIES

AMKR

AMKOR TECHNOLOGY, INC.
SEMICONDUCTORS & ELECTRONICS · SEMICONDUCTORS & RELATED DEVICES · CIK 0001047127
FORM 144 · 8☆ WATCH
INSIDER NET · 180D
-$13.1M
open-market buys minus sells, Form 4 codes P and S
INSIDER BUYERS · 180D
0
CONGRESS BUYERS · 1Y
0
FUNDS ADDED · QTR
387
13F, latest reported quarter
REVENUE GROWTH
+6.2%
XBRL, annual
NET MARGIN
5.6%
CONVERSIONS · 180D
28
codes C/M, not in net · $9.6M priced
SEVEN FACTS, RANKED AGAINST THE SECTOR · RANK IS NOT A FORECAST
INSIDERS
net -$13.1M over 180 days
-$4.8M over 90 days
below 66% of Semiconductors & Electronics
CONGRESS
no member of Congress has reported trading it
FUNDS
387 funds added or opened last quarter
more than 84% of Semiconductors & Electronics
REVENUE
+6.2% year over year
below 54% of Semiconductors & Electronics
MARGIN
5.6% net margin
more than 69% of Semiconductors & Electronics
BUYBACKS
no share repurchases reported
SHORT
3.6% of shares outstanding short · 1.2 days to cover · settled 2026-07-31
below 52% of Semiconductors & Electronics
THE SITUATION · EVERY LINE IS ONE RULE OVER ONE DATASET
Insiders are net sellers: -$13.1M across 8 people in 180 days.
387 funds added or opened positions in the latest 13F quarter, of 651 holders.
The year, with the filings on it
Total return indexed to 100 over the last 12 months · every marker is a federal filing, placed at its date — hover any marker for the detail
TOTAL 12M RETURN +101.6%
+101.6%12M
-0%+98%+197%+295%2025-092025-102025-122026-032026-052026-072026-09 2026-02-12 · KIM JOHN T sold $484.9M2026-02-12 · 915 Investments, LP sold $484.9M2026-05-08 · Rutten Guillaume Marie Jean sold $3.7M2026-05-05 · Carolin Roger Anthony sold $1.5M2026-08-05 · Rutten Guillaume Marie Jean sold $1.4M2026-08-06 · Rutten Guillaume Marie Jean sold $1.4M2026-05-11 · Tily Gil C. sold $1.2M2026-02-24 · Rutten Guillaume Marie Jean sold $976.0K2025-12-12 · Tily Gil C. sold $928.8K2025-12-12 · McCourt MaryFrances sold $920.4K2025-12-16 · ROGERS MARK N sold $859.0K2026-02-25 · Haghighi Farshad sold $789.0K2025-11-17 · ROGERS MARK N sold $633.8K2026-02-24 · Engel Kevin K. sold $609.4K2026-05-05 · CHURCHILL WINSTON J sold $535.1K2026-01-15 · Rutten Guillaume Marie Jean sold $531.4K2025-12-12 · Engel Kevin sold $508.3K2026-02-17 · Rutten Guillaume Marie Jean sold $458.9K2025-12-15 · Rutten Guillaume Marie Jean sold $448.0K2026-06-16 · ROGERS MARK N sold $431.0K2026-06-12 · CHURCHILL WINSTON J sold $391.0K2026-05-18 · ROGERS MARK N sold $358.1K2026-05-05 · ALEXANDER DOUGLAS A sold $356.6K2026-07-16 · ROGERS MARK N sold $325.6K2025-11-17 · Rutten Guillaume Marie Jean sold $316.8K2025-10-15 · Rutten Guillaume Marie Jean sold $307.4K2025-09-23 · Rutten Guillaume Marie Jean sold $300.0K2026-08-17 · ROGERS MARK N sold $298.9K2026-04-16 · ROGERS MARK N sold $297.1K2025-09-09 · Haghighi Farshad sold $294.8K2026-08-07 · ALEXANDER DOUGLAS A sold $279.1K2026-01-16 · ROGERS MARK N sold $246.4K2026-02-17 · Engel Kevin K. sold $244.7K2026-02-17 · ROGERS MARK N sold $234.6K2026-03-16 · ROGERS MARK N sold $222.7K2025-12-15 · CHURCHILL WINSTON J sold $221.4K2026-07-30 · Engel Kevin K. sold $151.4K2026-06-09 · Faust Megan sold $70.3K2026-07-14 · Faust Megan sold $69.9K2026-05-19 · Faust Megan sold $64.6K2026-08-11 · Faust Megan sold $54.5K2026-05-05 · ALEXANDER DOUGLAS A sold $26.3K2026-08-17 · MARK N ROGERS filed to sell $298.9K2026-08-11 · MEGAN FAUST filed to sell $54.5K2026-08-07 · DOUGLAS A ALEXANDER filed to sell $279.1K2026-08-06 · GUILLAUME RUTTEN filed to sell $1.4M2026-08-05 · GUILLAUME RUTTEN filed to sell $1.4M2026-07-30 · KEVIN K ENGEL filed to sell $151.4K2026-07-16 · MARK N ROGERS filed to sell $325.6K2026-07-14 · MEGAN FAUST filed to sell $69.9K
INSIDER SELLFORM 144
INDEXED RETURN, DIVIDEND-ADJUSTED — NOT A PRICE CHART · LARGE TRADES DRAWN FIRST WHEN A NAME FILES HEAVILY
Live price
Daily candles from TradingView, on their licence — no filings are marked on this one
WHY THIS NAME IS ON THE DESK
Insiders have filed to sell — before selling.
The record shows a net $13.1M sold by insiders over 180 days, 387 funds added last quarter, $3.9M in planned Form 144 sales. Every figure is a federal filing, dated the day it became public.
Backtest this pattern Open the screener
Same sector, ranked by filing activity
Sector from the SEC's own SIC classification
NVDACRDOVICRMPWRVPLMALABPIMTSIMUAIPAVGOMSI
Insider transactions
Form 4 purchases and sales (codes P and S) — grants, option exercises and preferred conversions excluded

Over the last 180 days, AMKOR TECHNOLOGY, INC. insiders sold a net $13.1M of stock across 166 Form 4 purchases and sales, with 0 insider(s) buying. Source: SEC Form 4 filings, as of 2026-09-06.

INSIDER
FILED
SHARES
VALUE
ROGERS MARK N
EVP & General Counsel
SELL
2026-08-17
5,000.0
$298.9K
Faust Megan
CFO
SELL
2026-08-11
1,000.0
$54.5K
ALEXANDER DOUGLAS A
Director
SELL
2026-08-07
5,000.0
$279.1K
Rutten Guillaume Marie Jean
Director
SELL
2026-08-06
25,000.0
$1.4M
Rutten Guillaume Marie Jean
Director
SELL
2026-08-05
25,000.0
$1.4M
166 TRANSACTIONS ON RECORD

Showing the most recent few. Create a free account to see 161 more transactions on record, the cross-source screener and CSV export. We store only your email address, and there is no password to create.

Institutional holders
13F · holdings as of the latest quarter funds have reported
BlackRock, Inc.
12,292,760.0 sh
$1.1B
VANGUARD PORTFOLIO MANAGEMENT LLC
9,712,553.0 sh
$837.5M
DIMENSIONAL FUND ADVISORS LP
8,064,191.0 sh
$695.3M
VANGUARD CAPITAL MANAGEMENT LLC
6,701,080.0 sh
$577.8M
JPMORGAN CHASE & CO
5,702,608.0 sh
$470.0M
SCHEDULE 13D/G
No 5%+ ownership filings
Nobody has crossed 5% with a filing obligation. Absence is a fact here, not missing data.
Planned sales · Form 144
Filed before the sale — intent, not a trade
MARK N ROGERS
FILED 2026-08-17
$298.9K
MEGAN FAUST
FILED 2026-08-11
$54.5K
DOUGLAS A ALEXANDER
FILED 2026-08-07
$279.1K
GUILLAUME RUTTEN
FILED 2026-08-06
$1.4M
GUILLAUME RUTTEN
FILED 2026-08-05
$1.4M
Fund concentration
N-PORT · funds ranked by how much of THEMSELVES they put in this stock — the conviction number 13F cannot show
Adaptiv Select ETF
$7.6M POSITION · AS OF 2026-04-30
4.5%
Harbor Small Cap Value Fund
$90.0M POSITION · AS OF 2026-04-30
3.6%
First Trust Nasdaq Semiconductor ETF
$50.2M POSITION · AS OF 2026-03-31
3.4%
Invesco Semiconductors ETF
$59.1M POSITION · AS OF 2026-04-30
3.0%
Small-MidCap Dividend Income Fund
$39.6M POSITION · AS OF 2026-02-28
2.3%
Virtus Ceredex Small-Cap Value Equity Fund
$1.6M POSITION · AS OF 2026-03-31
1.7%
SEC N-PORT, MONTHLY WITH A ~60-DAY PUBLIC LAG · FUNDS ≥ $10M · % = SHARE OF THE FUND'S OWN BOOK
Executive pay vs shareholder return · Mr. Rutten
DEF 14A pay-versus-performance disclosure · both the headline pay and the SEC's mark-to-market figure, beside the return the company delivered and the return of the peer group it chose itself
FY
CEO TOTAL
ACTUALLY PAID
OTHER NEOs AVG
TSR
PEER TSR
2025
$12.1M
$22.7M
$3.3M
+180%
+168%
2024
$16.6M
$14.2M
$2.7M
+80%
+87%
2023
$12.8M
$9.7M
$2.2M
+127%
+55%
2022
$3.6M
$2.4M
$1.7M
+62%
-7%
2021
$3.8M
$9.8M
$1.6M
+66%
+43%
TAGGED BY THE COMPANY UNDER SEC ITEM 402(v) · RETURN IS CUMULATIVE FROM THE START OF THE DISCLOSURE PERIOD · GREEN WHERE THE COMPANY BEAT ITS OWN PEER GROUP
Fundamentals
Annual figures from XBRL filings · pick a past date to see them exactly as the market knew them then — restatements and all
2025-122024-122023-122022-12
REVENUE$6.7B$6.3B$6.5B$7.1B
GROSS PROFIT$938.6M$933.2M$943.2M$1.3B
OPERATING INCOME$467.4M$438.5M$470.3M$897.2M
NET INCOME$373.9M$354.0M$359.8M$765.8M
EPS (DILUTED)1.501.431.463.11
OPERATING CASH FLOW$1.1B$1.1B$1.3B$1.1B
CASH$1.4B$1.1B$1.1B$959.1M
LONG-TERM DEBT$1.3B$923.4M$1.1B$1.1B
DIVIDENDS PAID$81.9M$178.6M$74.7M$55.1M
SEC XBRL · FISCAL-YEAR PERIODS · AS KNOWN ON 2026-09-06 · NOBODY ELSE SHOWS FUNDAMENTALS AS OF A PAST DATE
W WAVEMAN

Public filings, honestly analyzed. Official US government sources in one desk — every figure carries the date it was filed, and the methodology is published, backtest included.

SEC FORM 4FORM 13F 13D/GFORM 144XBRL STOCK ACTCONTRACTSFEC CFPBNRC
PRODUCT
DeskBacktester CompaniesAccount
SUPPORT
FAQMethodology Contact
LEGAL
TermsPrivacy Accessibility
© 2026 WAVEMAN · SOURCE: SEC EDGAR & OFFICIAL GOVERNMENT DATA · NOT INVESTMENT ADVICE · CHART BY TRADINGVIEW · UPDATED 2026-09-06 ALL SYSTEMS LIVE FOR MACHINES →