Amkor Technology, Inc.
Amkor Technology, Inc. (AMKR) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · AMKR · as of Sep 30, 2024
Ownership Breakdown
375
Institutional Holders
▼ 35 vs Q2
$3.26B
Total Inst. Value
▼ $969.33M vs Q2
247.87M
Shares Outstanding
freeFloat 54.68%
106.60M
13F Shares Held
▲ 851,754 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
AMKR largest shareholders · institutional ownership
Q3 2024 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC semiconductors & related devices | 14.57M | 5.91% | 5.91% | $445.91B | Nov 13, 2024 | ▲ 816.9K |
DIMENSIONAL FUND ADVISORS LP semiconductors & related devices | 13.40M | 5.44% | 5.44% | $410.03B | Nov 7, 2024 | ▼ 820.0K |
BLACKROCK, INC. semiconductors & related devices | 11.41M | 4.63% | 4.63% | $349.24B | Nov 13, 2024 | NEW |
LSV ASSET MANAGEMENT semiconductors & related devices | 5.40M | 2.19% | 2.19% | $165.22B | Nov 12, 2024 | ▼ 456.7K |
FIRST TRUST ADVISORS LP semiconductors & related devices | 4.43M | 1.80% | 1.80% | $135.50B | Nov 13, 2024 | ▲ 1.19M |
PACER ADVISORS, INC. semiconductors & related devices | 3.79M | 1.54% | 1.54% | $115.90B | Nov 12, 2024 | ▲ 3.77M |
ALLIANCEBERNSTEIN L.P. semiconductors & related devices | 3.52M | 1.43% | 1.43% | $107.86B | Nov 14, 2024 | ▲ 309.6K |
STATE STREET CORP semiconductors & related devices | 3.36M | 1.36% | 1.36% | $102.69B | Nov 14, 2024 | ▲ 176.5K |
AQR CAPITAL MANAGEMENT LLC semiconductors & related devices | 2.50M | 1.01% | 1.01% | $76.36B | Nov 14, 2024 | ▲ 708.9K |
EARNEST PARTNERS LLC semiconductors & related devices | 2.35M | 95.27% | 95.27% | $71.86B | Nov 14, 2024 | ▼ 75.0K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2024 vs prior quarter
Q3 2024
29
Increased
+12.01M shares5
New Positions
first time holders14
Decreased
−3.84M shares0
Sold Out
fully exitedNet shares change (top 50)
+8.17M
+12.01M / −3.84M
Net new holders
+20
5 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
AMKR insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
23
Buy transactions
22
Sell transactions
1.05
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
ROGERS MARK N EVP & General Counsel | May 18, 2026 | Sale | 5,000 | $71.63 | $358.1K | 38.9K | Form 4 ↗ |
Faust Megan CFO | May 19, 2026 | Sale | 1,000 | $64.60 | $64.6K | 133.1K | Form 4 ↗ |
KIM SUSAN Y Member of 10% owner group (6) | May 13, 2026 | Award | 2,613 | — | — | 2.6K | Form 4 ↗ |
Carolin Roger Anthony director | May 13, 2026 | Award | 2,613 | — | — | 2.6K | Form 4 ↗ |
ALEXANDER DOUGLAS A director | May 13, 2026 | Award | 2,613 | — | — | 2.6K | Form 4 ↗ |
McCourt MaryFrances director | May 13, 2026 | Award | 2,613 | — | — | 2.6K | Form 4 ↗ |
Morse Robert Randolph director | May 13, 2026 | Award | 2,613 | — | — | 2.6K | Form 4 ↗ |
Liao Daniel JL director | May 13, 2026 | Award | 2,613 | — | — | 2.6K | Form 4 ↗ |
CHURCHILL WINSTON J director | May 13, 2026 | Award | 2,613 | — | — | 2.6K | Form 4 ↗ |
Rutten Guillaume Marie Jean director | May 13, 2026 | Award | 2,613 | — | — | 2.6K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Amkor Technology, Inc. (AMKR) is primarily owned by institutional investors, who hold approximately 43.0% of total shares outstanding. Company insiders own approximately 45.32%, while retail and public investors account for the remaining 11.67%.
The largest institutional shareholder of Amkor Technology, Inc. is VANGUARD GROUP INC, holding approximately 14.57 million shares — equal to 5.91% of outstanding shares — as of September 30, 2024.
A total of 375 institutional investors currently hold AMKR stock, with a combined institutional value of approximately $3.26 billion as of the most recent 13F filing period.
Frequently asked questions
AMKR ownershipAmkor Technology, Inc. (AMKR) is primarily owned by institutional investors, who hold approximately 43.0% of shares. The largest shareholder is VANGUARD GROUP INC with a 5.91% stake. Company insiders hold 45.32%. Data sourced from SEC Form 13F as of September 30, 2024.