ProPhase Labs
PRPH
PRPH was delisted on the 2nd of January, 2026.
15 hedge funds and large institutions have $1.1M invested in ProPhase Labs in 2019 Q2 according to their latest regulatory filings, with 2 funds opening new positions, 3 increasing their positions, 4 reducing their positions, and 3 closing their positions.
0% more ownership
Funds ownership: 0.44% → 0.44% (+0%)
6% less funds holding
Funds holding: 16 → 15 (-1)
25% less repeat investments, than reductions
Existing positions increased: 3 | Existing positions reduced: 4
28% less capital invested
Capital invested by funds: $1.54M → $1.1M (-$435K)
33% less first-time investments, than exits
New positions opened: 2 | Existing positions closed: 3
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$40.4K |
| 2 |
Jane Street
New York
|
+$30.1K |
| 3 |
Renaissance Technologies
New York
|
+$13.8K |
| 4 |
Commonwealth Equity Services
Waltham,
Massachusetts
|
+$5.89K |
| 5 |
BlackRock
New York
|
+$883 |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
-$53K |
| 2 |
Bank of America
Charlotte,
North Carolina
|
-$17.3K |
| 3 |
UBS Group
Zurich,
Switzerland
|
-$7.42K |
| 4 |
Bank of New York Mellon
New York
|
-$5.33K |
| 5 |
PAM
Panagora Asset Management
Boston,
Massachusetts
|
-$677 |
PRPH Hedge Fund Activity: Q2 2019 in Review
15 of the 4,624 institutional investors tracked by Wall St. Rank reported a position in ProPhase Labs (PRPH) for Q2 2019, worth a combined $1.1M — down 28% from $1.54M a quarter earlier.
Sellers outnumbered buyers: 3 funds closed out of PRPH and 2 opened new positions — a net loss of 1 holder — while 4 trimmed existing stakes and 3 added.
The largest buyer was Susquehanna International Group, opening a new position worth an estimated $40.4K. The largest seller was Citadel Advisors, exiting entirely with an estimated $53K sold.
- 15 institutional investors held ProPhase Labs (PRPH) as of Q2 2019, down from 16 in Q1 2019.
- Funds reported $1.1M of ProPhase Labs stock for Q2 2019, down 28% quarter-over-quarter.
- 2 funds opened new ProPhase Labs positions in Q2 2019 and 3 closed out, a net change of -1 holder.
- The largest ProPhase Labs buyer in Q2 2019 was Susquehanna International Group, an estimated $40.4K added.
- The largest ProPhase Labs seller in Q2 2019 was Citadel Advisors, an estimated $53K sold.
Based on aggregated 13F filings for Q2 2019.