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OPK

Opko Health, Inc.

Company with tickers: OPK

CIK
944809
CUSIP
68375N103
Shares Outstanding
755,092,256
13F Activity (30d)
145 filings 139 filers

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: 235
Total Value: $229,239,615
Total Shares: 201,087,498
Showing 1–100 of 238 holdings by value · page 1 of 3

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 235 13F filers · Δ vs Dec 31, 2025
Top Holder
23.8%
Jun 2023 → Mar 2026 · range 20.0% – 37.0%
−0.1 pts
Top 5
62.0%
Jun 2023 → Mar 2026 · range 53.2% – 69.9%
−5.5 pts
Top 10
77.4%
Jun 2023 → Mar 2026 · range 66.3% – 80.0%
−1.4 pts
HHI
1,094
Jun 2023 → Mar 2026 · range 791 – 1,542
Broadly held−129

Quarterly Activity

vs Dec 31, 2025
New
43
Increased
57
Decreased
63
Sold Out
32
Unchanged
72
Holder count: +11
Institutional value: -9.2%
Shares held: +0.4%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Showing 100 of 238
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Holder Value (USD) % of 13F Shares Open