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Prothena Corp
PRTA

166 hedge funds and large institutions have $1.21B invested in Prothena Corp in 2022 Q2 according to their latest regulatory filings, with 16 funds opening new positions, 44 increasing their positions, 54 reducing their positions, and 21 closing their positions.

New
Increased
Maintained
Reduced
Closed

858% more call options, than puts

Call options by funds: $15.5M | Put options by funds: $1.62M

0.77% more ownership

Funds ownership: 94.4% → 95.16% (+0.77%)

0% more funds holding in top 10

Funds holding in top 10: 5 → 5 (0)

5% less funds holding

Funds holding: 174 → 166 (-8)

19% less repeat investments, than reductions

Existing positions increased: 44 | Existing positions reduced: 54

24% less first-time investments, than exits

New positions opened: 16 | Existing positions closed: 21

26% less capital invested

Capital invested by funds: $1.64B → $1.21B (-$427M)

Holders
166
Holders Change
-8
Holders Change %
-4.6%
% of All Funds
2.8%
Holding in Top 10
5
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.08%
New
16
Increased
44
Reduced
54
Closed
21
Calls
$15.5M
Puts
$1.62M
Net Calls
+$13.9M
Net Calls Change
+$807K

Top Buyers

1
FC
Finepoint Capital
Massachusetts
+$13.4M
2
PHS
PFM Health Sciences
California
+$10.1M
3
Renaissance Technologies
Renaissance Technologies
New York
+$8.54M
4
Fidelity Investments
Fidelity Investments
Massachusetts
+$7.31M
5
Janus Henderson Group
Janus Henderson Group
United Kingdom
+$5.19M

Top Sellers

1
BlackRock
BlackRock
New York
-$11.4M
2
PBA
Paradigm Biocapital Advisors
New York
-$9.8M
3
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
-$4.33M
4
State Street
State Street
Massachusetts
-$3.55M
5
Federated Hermes
Federated Hermes
Pennsylvania
-$2.83M
Name Holding Trade Value Shares
Change 		Change in
Stake
Invesco
26
Invesco
Georgia
$6.61M +$1.53M +52,130 +27%
UBS AM
27
UBS AM
Illinois
$6.6M -$496K -16,964 -7%
Two Sigma Investments
28
Two Sigma Investments
New York
$6.26M -$903K -30,864 -12%
Millennium Management
29
Millennium Management
New York
$5.56M -$1.99M -68,005 -25%
SC
30
Sessa Capital
New York
$5.08M – – –
Janus Henderson Group
31
Janus Henderson Group
United Kingdom
$4.97M +$5.19M +177,545 +3,231%
Marshall Wace
32
Marshall Wace
United Kingdom
$4.84M +$4.91M +167,861 +1,595%
GIM
33
Granahan Investment Management
Massachusetts
$4.33M +$1.03M +35,219 +28%
Citadel Advisors
34
Citadel Advisors
Florida
$4.22M +$3.28M +111,996 +257%
SG Americas Securities
35
SG Americas Securities
New York
$4.2M +$324K +11,082 +8%
PA
36
Pinnacle Associates
New York
$3.92M -$11.9K -408 -0.3%
Capital Fund Management (CFM)
37
Capital Fund Management (CFM)
France
$3.73M +$500K +17,103 +14%
Handelsbanken Fonder
38
Handelsbanken Fonder
Sweden
$3.46M +$851K +29,100 +30%
Bank of New York Mellon
39
Bank of New York Mellon
New York
$3.24M -$1.02M -34,917 -23%
TD Asset Management
40
TD Asset Management
Ontario, Canada
$3.03M -$512K -17,500 -14%
BC
41
Birchview Capital
Vermont
$2.78M +$1.77M +60,570 +144%
Point72 Asset Management
42
Point72 Asset Management
Connecticut
$2.71M -$2.14M -73,100 -42%
Wellington Management Group
43
Wellington Management Group
Massachusetts
$2.54M -$936 -32 -0%
Citigroup
44
Citigroup
New York
$2.32M +$1.75M +59,797 +234%
Rafferty Asset Management
45
Rafferty Asset Management
New York
$2.21M -$1.82M -62,075 -43%
Swiss National Bank
46
Swiss National Bank
Switzerland
$2.1M – – –
Norges Bank
47
Norges Bank
Norway
$2.09M – – –
GC
48
Guggenheim Capital
Illinois
$2.07M +$2.23M +76,216 New
DA
49
DCF Advisers
Connecticut
$1.84M -$238K -8,144 -11%
Bank of America
50
Bank of America
North Carolina
$1.77M -$2.72M -92,875 -59%
1
2
3 4 5

PRTA Hedge Fund Activity: Q2 2022 in Review

166 of the 5,936 institutional investors tracked by Wall St. Rank reported a position in Prothena Corp (PRTA) for Q2 2022, worth a combined $1.21B — down 26% from $1.64B a quarter earlier.

Sellers outnumbered buyers: 21 funds closed out of PRTA and 16 opened new positions — a net loss of 5 holders — while 54 trimmed existing stakes and 44 added.

The largest buyer was Finepoint Capital, opening a new position worth an estimated $13.4M. The largest seller was BlackRock, cutting an estimated $11.4M.

  • 166 institutional investors held Prothena Corp (PRTA) as of Q2 2022, down from 174 in Q1 2022.
  • Funds reported $1.21B of Prothena Corp stock for Q2 2022, down 26% quarter-over-quarter.
  • 16 funds opened new Prothena Corp positions in Q2 2022 and 21 closed out, a net change of -5 holders.
  • The largest Prothena Corp buyer in Q2 2022 was Finepoint Capital, an estimated $13.4M added.
  • The largest Prothena Corp seller in Q2 2022 was BlackRock, an estimated $11.4M sold.

Based on aggregated 13F filings for Q2 2022.