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ProPhase Labs
PRPH

Delisted

PRPH was delisted on the 2nd of January, 2026.

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14 hedge funds and large institutions have $1.54M invested in ProPhase Labs in 2018 Q4 according to their latest regulatory filings, with 1 funds opening new positions, 2 increasing their positions, 6 reducing their positions, and 3 closing their positions.

New
Increased
Maintained
Reduced
Closed

0.33% less ownership

Funds ownership: 4.57% → 4.24% (-0.33%)

3% less capital invested

Capital invested by funds: $1.58M → $1.54M (-$40K)

13% less funds holding

Funds holding: 16 → 14 (-2)

67% less first-time investments, than exits

New positions opened: 1 | Existing positions closed: 3

67% less repeat investments, than reductions

Existing positions increased: 2 | Existing positions reduced: 6

Holders
14
Holders Change
-2
Holders Change %
-12.5%
% of All Funds
0.31%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
1
Increased
2
Reduced
6
Closed
3
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Dimensional Fund Advisors
Dimensional Fund Advisors
Texas
+$32.9K
2
Vanguard Group
Vanguard Group
Pennsylvania
+$22.7K
3
PAM
Panagora Asset Management
Massachusetts
+$274

Top Sellers

Rank Fund Capital Flow
1
Deutsche Bank
Deutsche Bank
Germany
-$56K
2
Renaissance Technologies
Renaissance Technologies
New York
-$40.4K
3
Susquehanna International Group
Susquehanna International Group
Pennsylvania
-$30K
4
Acadian Asset Management
Acadian Asset Management
Massachusetts
-$23.3K
5
Wells Fargo
Wells Fargo
California
-$15.2K

PRPH Hedge Fund Activity: Q4 2018 in Review

14 of the 4,505 institutional investors tracked by Wall St. Rank reported a position in ProPhase Labs (PRPH) for Q4 2018, worth a combined $1.54M — down 2.5% from $1.58M a quarter earlier.

Sellers outnumbered buyers: 3 funds closed out of PRPH and 1 opened new positions — a net loss of 2 holders — while 6 trimmed existing stakes and 2 added.

The largest buyer was Dimensional Fund Advisors, opening a new position worth an estimated $32.9K. The largest seller was Deutsche Bank, exiting entirely with an estimated $56K sold.

  • 14 institutional investors held ProPhase Labs (PRPH) as of Q4 2018, down from 16 in Q3 2018.
  • Funds reported $1.54M of ProPhase Labs stock for Q4 2018, down 2.5% quarter-over-quarter.
  • 1 fund opened new ProPhase Labs positions in Q4 2018 and 3 closed out, a net change of -2 holders.
  • The largest ProPhase Labs buyer in Q4 2018 was Dimensional Fund Advisors, an estimated $32.9K added.
  • The largest ProPhase Labs seller in Q4 2018 was Deutsche Bank, an estimated $56K sold.

Based on aggregated 13F filings for Q4 2018.