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AMKR · Amkor Technology, Inc.

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$50.24 -0.63 (-1.23%)
Market Cap
$12.61B
Shares
247.87M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 650
Total Value: $10,514,964,057
Total Shares: 121,977,351

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 650 13F filers · Δ vs Mar 31, 2026
Top Holder
10.1%
Sep 2023 → Jun 2026 · range 10.1% – 14.4%
−0.2 pts
Top 5
34.8%
Sep 2023 → Jun 2026 · range 34.8% – 52.2%
+0.0 pts
Top 10
47.8%
Sep 2023 → Jun 2026 · range 47.8% – 65.0%
−0.2 pts
HHI
337
Sep 2023 → Jun 2026 · range 337 – 702
Broadly held−15

Quarterly Activity

vs Mar 31, 2026
New
173
Increased
216
Decreased
195
Sold Out
59
Unchanged
66
Holder count: +114
Institutional value: +85.2%
Shares held: -3.3%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 680
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1047127 CUSIP 031652100 13F (30d) 567 filings 550 filers Visit website Investor relations