Position in OPK
as of Jun 30, 2026
· filed Aug 3, 2026
Position Value
$299,735
+$261,346 QoQ
Shares Held
199,824
+493.4% QoQ
Ownership
0.027%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#55
of 222 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in OPK Over Time
Shares Held
Position Value (USD)
Derivatives in OPK
reported options exposure · as of Dec 31, 2020CallValue
$278,475
CallShares
70,500
PutValue
$545,100
PutShares
138,000
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Diagnostics & Research
Healthcare · as of Jun 30, 2026CITIGROUP INC holds $1,355,830,348 across 36 Diagnostics & Research names. OPK ranks #30 (0.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | TMO |
Thermo Fisher Scientific Inc.
|
650,976 | $326,373,326 | |
| 2 | DHR |
Danaher Corp /De/
|
778,298 | $148,250,202 | |
| 3 | MTD |
Mettler Toledo International Inc/
|
90,754 | $115,939,141 | |
| 4 | IDXX |
Idexx Laboratories Inc /De
|
165,689 | $87,225,316 | |
| 5 | ILMN |
Illumina, Inc.
|
465,311 | $81,815,632 | |
| 6 | WAT |
Waters Corp /De/
|
213,227 | $79,968,652 | |
| 7 | CRL |
Charles River Laboratories International, Inc.
|
316,217 | $71,714,852 | |
| 8 | DGX |
Quest Diagnostics Inc
|
315,584 | $66,888,027 |
All Filings in OPK
Export CSV
34 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $299,735 | 199,824 | Shares | Defined | 2026-08-03 | |
| 2026-03-31 | $38,389 | 33,676 | Shares | Defined | 2026-05-11 | |
| 2025-12-31 | $20,842 | 16,542 | Shares | Defined | 2026-02-13 | |
| 2025-09-30 | $50,758 | 32,748 | Shares | Defined | 2025-11-10 | |
| 2025-06-30 | $220,585 | 167,111 | Shares | Defined | 2025-08-11 | |
| 2025-03-31 | $438,074 | 263,901 | Shares | Defined | 2025-05-12 | |
| 2024-12-31 | $397,066 | 270,114 | Shares | Defined | 2025-02-12 | |
| 2024-09-30 | $355,850 | 238,826 | Shares | Defined | 2024-11-12 | |
| 2024-06-30 | $163,646 | 130,918 | Shares | Defined | 2024-08-12 | |
| 2024-03-31 | $1,827,888 | 1,523,241 | Shares | Defined | 2024-05-10 | |
| 2023-12-31 | $2,339,867 | 1,549,582 | Shares | Defined | 2024-02-09 | |
| 2023-09-30 | $2,374,012 | 1,483,758 | Shares | Defined | 2023-12-06 | |
| 2023-06-30 | $3,507,463 | 1,616,343 | Shares | Defined | 2023-08-10 | |
| 2023-03-31 | $2,188,462 | 1,498,947 | Shares | Defined | 2023-05-11 | |
| 2022-12-31 | $2,665,603 | 2,132,483 | Shares | Defined | 2023-02-09 | |
| 2022-09-30 | $4,049,119 | 2,142,392 | Shares | Defined | 2022-11-10 | |
| 2022-06-30 | $5,484,060 | 2,167,613 | Shares | Defined | 2022-08-10 | |
| 2022-03-31 | $963,016 | 279,947 | Shares | Defined | 2022-05-12 | |
| 2021-12-31 | $3,586,975 | 745,733 | Shares | Defined | 2022-02-10 | |
| 2021-09-30 | $2,239,237 | 613,490 | Shares | Defined | 2021-11-10 | |
| 2021-06-30 | $4,735,648 | 1,169,296 | Shares | Defined | 2021-08-10 | |
| 2021-03-31 | $5,119,796 | 1,193,426 | Shares | Defined | 2021-05-13 | |
| 2020-12-31 | $849,904 | 215,166 | Shares | Defined | 2021-02-11 | |
| 2020-12-31 | $278,475 | 70,500 | Call | Defined | 2021-02-11 | |
| 2020-12-31 | $545,100 | 138,000 | Put | Defined | 2021-02-11 | |
| 2020-09-30 | $309,222 | 83,800 | Put | Defined | 2020-11-12 | |
| 2020-09-30 | $144,279 | 39,100 | Call | Defined | 2020-11-12 | |
| 2020-09-30 | $203,930 | 55,266 | Shares | Defined | 2020-11-12 | |
| 2020-06-30 | $1,831,898 | 537,214 | Shares | Defined | 2020-08-12 | |
| 2020-06-30 | $126,511 | 37,100 | Put | Defined | 2020-08-12 | |
| 2020-06-30 | $98,208 | 28,800 | Call | Defined | 2020-08-12 | |
| 2020-03-31 | $3,133,010 | 2,338,069 | Shares | Defined | 2020-05-12 | |
| 2020-03-31 | $54,404 | 40,600 | Put | Defined | 2020-05-12 | |
| 2020-03-31 | $38,592 | 28,800 | Call | Defined | 2020-05-12 | |
| No filing history on record for this holder in this stock. | ||||||