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Prothena Corp
PRTA

160 hedge funds and large institutions have $1.05B invested in Prothena Corp in 2024 Q2 according to their latest regulatory filings, with 27 funds opening new positions, 58 increasing their positions, 42 reducing their positions, and 34 closing their positions.

New
Increased
Maintained
Reduced
Closed

38% more repeat investments, than reductions

Existing positions increased: 58 | Existing positions reduced: 42

0% more funds holding in top 10

Funds holding in top 10: 3 → 3 (0)

5.06% less ownership

Funds ownership: 99.57% → 94.51% (-5.1%)

5% less funds holding

Funds holding: 169 → 160 (-9)

12% less call options, than puts

Call options by funds: $2.03M | Put options by funds: $2.31M

21% less first-time investments, than exits

New positions opened: 27 | Existing positions closed: 34

21% less capital invested

Capital invested by funds: $1.33B → $1.05B (-$277M)

Holders
160
Holders Change
-9
Holders Change %
-5.33%
% of All Funds
2.31%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.04%
New
27
Increased
58
Reduced
42
Closed
34
Calls
$2.03M
Puts
$2.31M
Net Calls
-$277K
Net Calls Change
-$271K

Top Buyers

Rank Fund Capital Flow
1
AC
Armistice Capital
New York
+$10M
2
Morgan Stanley
Morgan Stanley
New York
+$3.42M
3
BlackRock
BlackRock
New York
+$2.99M
4
Citadel Advisors
Citadel Advisors
Florida
+$2.56M
5
PM
Prosight Management
Texas
+$2.52M

Top Sellers

Rank Fund Capital Flow
1
State Street
State Street
Massachusetts
-$33.4M
2
FLAM
First Light Asset Management
Minnesota
-$11M
3
UBS AM
UBS AM
Illinois
-$7.19M
4
Millennium Management
Millennium Management
New York
-$6.3M
5
Janus Henderson Group
Janus Henderson Group
United Kingdom
-$6.12M
Name Holding Trade Value Shares
Change 		Change in
Stake
BC
26
Birchview Capital
Vermont
$4.2M +$736K +34,000 +20%
Mariner
27
Mariner
Kansas
$4.09M +$456K +21,069 +12%
SFM
28
Systematic Financial Management
New Jersey
$4M +$861K +39,771 +26%
Bank of New York Mellon
29
Bank of New York Mellon
New York
$3.41M +$424K +19,578 +13%
N
30
Nuveen
North Carolina
$3.14M -$1.96M -90,669 -37%
PA
31
Pinnacle Associates
New York
$2.54M -$51.2K -2,364 -2%
Jane Street
32
Jane Street
New York
$2.51M +$1.45M +67,069 +123%
Axa
33
Axa
France
$2.49M +$1.49K +69 +0.1%
Bank of America
34
Bank of America
North Carolina
$2.45M -$2.63M -121,479 -51%
Connor, Clark & Lunn Investment Management (CC&L)
35
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$2.33M -$413K -19,079 -14%
DA
36
DCF Advisers
Connecticut
$2.22M +$10.8K +500 +0.5%
PP
37
PDT Partners
New York
$2.12M +$2.22M +102,708 New
TD Asset Management
38
TD Asset Management
Ontario, Canada
$2.08M -$339K -15,644 -13%
Rafferty Asset Management
39
Rafferty Asset Management
New York
$2M -$4.47M -206,436 -68%
Manulife (Manufacturers Life Insurance)
40
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$1.71M +$7.08K +327 +0.4%
AG
41
Algert Global
California
$1.59M +$624K +28,841 +60%
Two Sigma Investments
42
Two Sigma Investments
New York
$1.48M +$1.55M +71,559 New
RhumbLine Advisers
43
RhumbLine Advisers
Massachusetts
$1.44M +$135K +6,256 +10%
Swiss National Bank
44
Swiss National Bank
Switzerland
$1.42M -$227K -10,500 -13%
Wells Fargo
45
Wells Fargo
California
$1.25M +$209K +9,662 +19%
Norges Bank
46
Norges Bank
Norway
$1.19M – – –
SG Americas Securities
47
SG Americas Securities
New York
$1.13M +$819K +37,852 +226%
Thrivent Financial for Lutherans
48
Thrivent Financial for Lutherans
Minnesota
$980K -$43.9K -2,028 -4%
ECM
49
ExodusPoint Capital Management
New York
$972K +$1.02M +47,107 New
AllianceBernstein
50
AllianceBernstein
Tennessee
$965K – – –
1
2
3 4 5

PRTA Hedge Fund Activity: Q2 2024 in Review

160 of the 6,924 institutional investors tracked by Wall St. Rank reported a position in Prothena Corp (PRTA) for Q2 2024, worth a combined $1.05B — down 21% from $1.33B a quarter earlier.

Sellers outnumbered buyers: 34 funds closed out of PRTA and 27 opened new positions — a net loss of 7 holders — while 42 trimmed existing stakes and 58 added.

The largest buyer was Armistice Capital, adding an estimated $10M. The largest seller was State Street, cutting an estimated $33.4M.

  • 160 institutional investors held Prothena Corp (PRTA) as of Q2 2024, down from 169 in Q1 2024.
  • Funds reported $1.05B of Prothena Corp stock for Q2 2024, down 21% quarter-over-quarter.
  • 27 funds opened new Prothena Corp positions in Q2 2024 and 34 closed out, a net change of -7 holders.
  • The largest Prothena Corp buyer in Q2 2024 was Armistice Capital, an estimated $10M added.
  • The largest Prothena Corp seller in Q2 2024 was State Street, an estimated $33.4M sold.

Based on aggregated 13F filings for Q2 2024.