AMKOR TECHNOLOGY, INC. AMKR
CIK 0001047127 · CUSIP 031652100
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | BlackRock, Inc. CIK 2012383 · View history | $583.98M 12,968,765 shares | 0.01% | +45.82K(+0.40%)Added | SEC filing ↗ May 13, 2026 | ▾ |
| 02 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $494.88M 10,991,469 shares | 0.10% | -1.78M(-13.90%)Reduced | SEC filing ↗ May 7, 2026 | ▾ |
| 03 | VANGUARD PORTFOLIO MANAGEMENT LLC CIK 2100121 · Amended · View history | $409.59M 9,095,848 shares | 0.02% | — | SEC filing ↗ May 8, 2026 | ▾ |
| 04 | VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · Amended · View history | $244.71M 5,434,318 shares | 0.01% | — | SEC filing ↗ May 15, 2026 | ▾ |
| 05 | JPMORGAN CHASE & CO CIK 19617 · Amended · View history | $223.02M 5,406,545 shares | 0.02% | +5.07M(+1,504.80%)Added | SEC filing ↗ May 13, 2026 | ▾ |
| 06 | STATE STREET CORP CIK 93751 · View history | $163.39M 3,628,542 shares | 0.01% | +154.62K(+4.50%)Added | SEC filing ↗ May 15, 2026 | ▾ |
| 07 | EARNEST PARTNERS LLC CIK 1102578 · View history | $154.54M 3,431,843 shares | 0.64% | -360.58K(-9.50%)Reduced | SEC filing ↗ May 15, 2026 | ▾ |
| 08 | AQR CAPITAL MANAGEMENT LLC CIK 1167557 · View history | $141.42M 3,242,130 shares | 0.06% | -57.84K(-1.80%)Reduced | SEC filing ↗ May 15, 2026 | ▾ |
| 09 | Point72 Asset Management, L.P. CIK 1603466 · View history | $134.79M 2,993,434 shares | 0.23% | -70.67K(-2.30%)Reduced | SEC filing ↗ May 15, 2026 | ▾ |
| 10 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $122.98M 2,730,508 shares | 0.01% | +498.30K(+22.30%)Added | SEC filing ↗ May 15, 2026 | ▾ |
| 11 | AMERICAN CENTURY COMPANIES INC CIK 748054 · View history | $122.18M 2,713,260 shares | 0.06% | -863.63K(-24.10%)Reduced | SEC filing ↗ May 15, 2026 | ▾ |
| 12 | PRINCIPAL FINANCIAL GROUP INC CIK 1126328 · View history | $118.11M 2,622,744 shares | 0.06% | +423.63K(+19.30%)Added | SEC filing ↗ May 4, 2026 | ▾ |
| 13 | JANE STREET GROUP, LLC CIK 1595888 · View history | $104.91M 2,329,820 shares | 0.11% | +2.27M(+3,578.10%)Added | SEC filing ↗ May 12, 2026 | ▾ |
| 14 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history | $94.63M 2,101,538 shares | 0.01% | +2.19K(+0.10%)Added | SEC filing ↗ May 15, 2026 | ▾ |
| 15 | Fisher Asset Management, LLC CIK 850529 · View history | $90.55M 2,010,982 shares | 0.03% | -84.05K(-4.00%)Reduced | SEC filing ↗ May 5, 2026 | ▾ |
| 16 | Invesco Ltd. CIK 914208 · Amended · View history | $85.08M 1,889,405 shares | 0.01% | +773.82K(+69.40%)Added | SEC filing ↗ May 12, 2026 | ▾ |
| 17 | FIRST TRUST ADVISORS LP CIK 1125816 · View history | $80.76M 1,793,537 shares | 0.06% | -928.77K(-34.10%)Reduced | SEC filing ↗ May 13, 2026 | ▾ |
| 18 | Bridgewater Associates, LP CIK 1350694 · View history | $71.19M 1,580,929 shares | 0.32% | +1.50M(+1,976.40%)Added | SEC filing ↗ May 15, 2026 | ▾ |
| 19 | D. E. Shaw & Co., Inc. CIK 1009207 · View history | $67.04M 1,488,765 shares | 0.05% | +1.33M(+861.80%)Added | SEC filing ↗ May 15, 2026 | ▾ |
| 20 | Allianz Asset Management GmbH CIK 1535323 · View history | $62.34M 1,384,433 shares | 0.07% | +376.80K(+37.40%)Added | SEC filing ↗ May 11, 2026 | ▾ |
Showing 20 / 534 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
Explore all 534 reporting institutions.
This page includes 20 of 534 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
＋ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 534 reporting institutions; totals use the complete disclosed data.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.
MCP https://api.akkrudata.ai/mcp
akkru_institutional_holdings
{"action":"holders","cusip":"031652100","quarter":"2026Q1","type":"positions","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP / CLI documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.