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Prothena Corp
PRTA

138 hedge funds and large institutions have $409M invested in Prothena Corp in 2019 Q2 according to their latest regulatory filings, with 25 funds opening new positions, 44 increasing their positions, 28 reducing their positions, and 24 closing their positions.

New
Increased
Maintained
Reduced
Closed

167% more call options, than puts

Call options by funds: $823K | Put options by funds: $308K

57% more repeat investments, than reductions

Existing positions increased: 44 | Existing positions reduced: 28

4% more first-time investments, than exits

New positions opened: 25 | Existing positions closed: 24

0% more funds holding in top 10

Funds holding in top 10: 2 → 2 (0)

1% less funds holding

Funds holding: 139 → 138 (-1)

2.18% less ownership

Funds ownership: 99.27% → 97.09% (-2.2%)

15% less capital invested

Capital invested by funds: $480M → $409M (-$71M)

Holders
138
Holders Change
-1
Holders Change %
-0.72%
% of All Funds
3%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.04%
New
25
Increased
44
Reduced
28
Closed
24
Calls
$823K
Puts
$308K
Net Calls
+$515K
Net Calls Change
+$3.4M

Top Buyers

1
GPP
Great Point Partners
Connecticut
+$17.2M
2
O
OrbiMed
New York
+$6.47M
3
Millennium Management
Millennium Management
New York
+$5.17M
4
N
Nuveen
North Carolina
+$2.6M
5
Marshall Wace
Marshall Wace
United Kingdom
+$1.78M

Top Sellers

1
WIM
Woodford Investment Management
United Kingdom
-$32.4M
2
SCM
Scopia Capital Management
New York
-$7.28M
3
HT
HAP Trading
New York
-$5.56M
4
MSE
MUFG Securities EMEA
United Kingdom
-$2.25M
5
State Street
State Street
Massachusetts
-$1.44M
Name Holding Trade Value Shares
Change 		Change in
Stake
WIM
1
Woodford Investment Management
United Kingdom
$92.7M -$32.4M -3,150,824 -26%
Fidelity Investments
2
Fidelity Investments
Massachusetts
$43.3M -$943K -91,864 -2%
BlackRock
3
BlackRock
New York
$35.4M +$181K +17,619 +0.5%
O
4
OrbiMed
New York
$32.4M +$6.47M +630,000 +26%
Dimensional Fund Advisors
5
Dimensional Fund Advisors
Texas
$18.8M +$931K +90,621 +5%
GPP
6
Great Point Partners
Connecticut
$17.7M +$17.2M +1,676,250 New
Citadel Advisors
7
Citadel Advisors
Florida
$15.8M +$399K +38,849 +3%
State Street
8
State Street
Massachusetts
$14.6M -$1.44M -140,388 -9%
Wellington Management Group
9
Wellington Management Group
Massachusetts
$11.9M -$719K -70,039 -6%
PAI
10
Palo Alto Investors
California
$11.7M – – –
Vanguard Group
11
Vanguard Group
Pennsylvania
$8.6M +$59.7K +5,817 +0.7%
EC
12
EcoR1 Capital
California
$7.64M -$33.1K -3,219 -0.4%
Morgan Stanley
13
Morgan Stanley
New York
$6.17M -$1.01M -97,930 -14%
Geode Capital Management
14
Geode Capital Management
Massachusetts
$6.1M +$321K +31,292 +6%
Millennium Management
15
Millennium Management
New York
$5.67M +$5.17M +503,741 +1,553%
Northern Trust
16
Northern Trust
Illinois
$5.5M +$367K +35,777 +7%
Goldman Sachs
17
Goldman Sachs
New York
$5.13M +$798K +77,649 +19%
D.E. Shaw & Co
18
D.E. Shaw & Co
New York
$4.53M -$930K -90,571 -17%
Two Sigma Investments
19
Two Sigma Investments
New York
$3.88M -$351K -34,201 -9%
Bank of New York Mellon
20
Bank of New York Mellon
New York
$3.59M -$228K -22,176 -6%
TCM
21
Tang Capital Management
California
$3.42M – – –
Two Sigma Advisers
22
Two Sigma Advisers
New York
$2.91M -$45.2K -4,400 -2%
American Century Companies
23
American Century Companies
Missouri
$2.83M +$637K +62,065 +30%
N
24
Nuveen
North Carolina
$2.67M +$2.6M +252,970 New
Deutsche Bank
25
Deutsche Bank
Germany
$2.66M -$266K -25,889 -9%
1
2 3 4 5

PRTA Hedge Fund Activity: Q2 2019 in Review

138 of the 4,604 institutional investors tracked by Wall St. Rank reported a position in Prothena Corp (PRTA) for Q2 2019, worth a combined $409M — down 15% from $480M a quarter earlier.

Buyers outnumbered sellers: 25 funds opened new PRTA positions and 24 closed out — a net gain of 1 holder — while 44 added to existing stakes and 28 trimmed.

The largest buyer was Great Point Partners, opening a new position worth an estimated $17.2M. The largest seller was Woodford Investment Management, cutting an estimated $32.4M.

  • 138 institutional investors held Prothena Corp (PRTA) as of Q2 2019, down from 139 in Q1 2019.
  • Funds reported $409M of Prothena Corp stock for Q2 2019, down 15% quarter-over-quarter.
  • 25 funds opened new Prothena Corp positions in Q2 2019 and 24 closed out, a net change of +1 holder.
  • The largest Prothena Corp buyer in Q2 2019 was Great Point Partners, an estimated $17.2M added.
  • The largest Prothena Corp seller in Q2 2019 was Woodford Investment Management, an estimated $32.4M sold.

Based on aggregated 13F filings for Q2 2019.