Opko Health
OPK
1.36
-0.04
-2.52%
Opko Health
US · OPK
#3224 by market cap
1.36
-0.04
-2.52%
Live - 5344 symbols - heartbeat 245s ago
· 2026-10-08 09:57
Pre-market
1.37
-1.44%
After-hours
1.39
-0.02%
Overnight
1.40
+0.72%
- Market cap
- 1.01B
- P/E (TTM)i
- -19.36
- P/Bi
- 0.85
- EPSi
- -0.30
- Div yieldi
- 0.00%
- 52W posi
- 49%
Reader sentiment
Are you bullish or bearish on OPK?
Anonymous reader poll. Unscientific, not investment advice.
✦ Quant Ownership Signal how this is computed
Accumulating
- The number of reporting institutions decreased by 1 in the most recent period (2026/Q3).
- Total institutional ownership rose 0.3 percentage points.
Institutional ownership
- Held by institutions
- 34.83% +0.31pp
- Institutions
- 260 -1
- As of
- 2026/Q3 vs. prior period
Ownership vs. money flow
DivergingInstitutions added shares last reporting period, and the stock has seen net outflows in main-fund flow over the last 20 trading sessions - the two are pointing in different directions.
Institutional ownership changes are reported quarterly with a lag; fund-flow data is daily. Treat this as a directional cross-check, not a precise timing signal.
Holder types
Individual/Insider43.22%
Mutual Fund18.05%
Hedge Fund8.28%
VC/PE Fund4.04%
Private Company3.26%
Public Company0.62%
Family Office/Trust0.23%
Government Pension Fund0.22%
Insurance Company0.11%
Other21.97%
Top holders as of 2026-06-29
Phillip Frost
29.45% · 219.78M sh
Rubric Capital Management LP
6.40% · 47.79M sh
Gary Nabel
5.40% · 40.31M sh
BlackRock
4.95% · 36.98M sh
Jane Hsiao
4.44% · 33.13M sh
Frost Group, LLC
4.04% · 30.13M sh
Elias Zerhouni
2.74% · 20.42M sh
Eaz Zeraz Trust
2.65% · 19.78M sh
Vanguard Capital Management, LLC
2.37% · 17.68M sh
Vanguard Portfolio Management, LLC
2.00% · 14.93M sh
Bar length is relative to the largest holder shown here, not to 100% of the company.
Insiders
50 filings tracked · 45 buys · 3 sells
| Name | Role | Stake |
|---|---|---|
| Phillip Frost | Chairperson & CEO | 29.45% |
| Gary Nabel | Chief Innovation Officer & Director | 5.40% |
| Jane Hsiao | Vice Chairman & Chief Technical Officer | 4.44% |
| Elias Zerhouni | President & Vice Chairman | 2.74% |
| Steven Rubin | Executive VP of Administration & Director | 0.85% |
| Subbarao Uppaluri | Former Chief Financial Officer | 0.16% |
| John Paganelli | Independent Director | 0.05% |
| Adam Logal | Senior VP, CFO, Chief Accounting Officer & Treasurer | 0.05% |
| Richard Pfenniger | Lead Independent Director | 0.04% |
| Lin-Tsing Yu | Independent Director | 0.01% |
Insider transactions most recent Form 4 filings
| Date | Name | Role | Type | Shares | Price |
|---|---|---|---|---|---|
| 2026-07-23 | Steven Rubin | Executive VP of Administration & Director | Sale to Issuer | -53,266 | $1.22 |
| 2026-07-23 | Adam Logal | Senior VP, CFO, Chief Accounting Officer & Treasurer | Sale to Issuer | -53,266 | $1.22 |
| 2026-06-17 | Roger Medel | Independent Director | Other Derivative Acquisition | +30,000 | $1.42 |
| 2026-06-17 | Richard Pfenniger | Lead Independent Director | Other Derivative Acquisition | +60,000 | $1.42 |
| 2026-06-17 | John Paganelli | Independent Director | Other Derivative Acquisition | +30,000 | $1.42 |
| 2026-06-17 | Prem Lachman | Independent Director | Other Derivative Acquisition | +30,000 | $1.42 |
| 2026-06-17 | Subbarao Uppaluri | Former Chief Financial Officer | Other Derivative Acquisition | +80,000 | $1.42 |
| 2026-06-17 | Lin-Tsing Yu | Independent Director | Other Derivative Acquisition | +30,000 | $1.42 |
| 2026-03-19 | John Paganelli | Independent Director | Open Market Acquisition | +10,000 | $1.14 |
| 2026-03-17 | Subbarao Uppaluri | Former Chief Financial Officer | Other Derivative Acquisition | +50,000 | $1.17 |
| 2026-03-17 | Subbarao Uppaluri | Former Chief Financial Officer | Initial Statement of Beneficial | 0 | -- |
| 2026-03-17 | Uppaluri Investments LLC | -- | Initial Statement of Beneficial | 0 | -- |
| 2025-11-20 | Phillip Frost | Chairperson & CEO | Open Market Acquisition | +580,000 | $1.30–1.34 |
| 2025-11-19 | Phillip Frost | Chairperson & CEO | Open Market Acquisition | +580,000 | $1.32–1.35 |
| 2025-11-18 | Phillip Frost | Chairperson & CEO | Open Market Acquisition | +580,000 | $1.28–1.32 |
| 2025-11-17 | Phillip Frost | Chairperson & CEO | Other Acquisition | +46,700 | $1.26 |
| 2025-11-17 | Phillip Frost | Chairperson & CEO | Open Market Acquisition | +533,300 | $1.25–1.29 |
| 2025-10-30 | Phillip Frost | Chairperson & CEO | Open Market Acquisition | +150,000 | $1.42 |
| 2025-08-17 | Phillip Frost | Chairperson & CEO | Other Disposition | -440,000 | -- |
| 2025-08-07 | Phillip Frost | Chairperson & CEO | Open Market Acquisition | +675,000 | $1.32 |
Form 4 filings, most recent per company. "Other Derivative Acquisition" rows are mostly RSU/option vesting, not open-market buying - the Type column says which.
Quote time 2026-10-08 09:57:34 · For reference only, not investment advice and not tailored to your situation.