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Prothena Corp
PRTA

141 hedge funds and large institutions have $584M invested in Prothena Corp in 2019 Q4 according to their latest regulatory filings, with 24 funds opening new positions, 37 increasing their positions, 38 reducing their positions, and 13 closing their positions.

New
Increased
Maintained
Reduced
Closed

3,454% more call options, than puts

Call options by funds: $8.21M | Put options by funds: $231K

99% more capital invested

Capital invested by funds: $294M → $584M (+$290M)

85% more first-time investments, than exits

New positions opened: 24 | Existing positions closed: 13

8% more funds holding

Funds holding: 130 → 141 (+11)

3% less repeat investments, than reductions

Existing positions increased: 37 | Existing positions reduced: 38

1.55% less ownership

Funds ownership: 94.04% → 92.49% (-1.6%)

50% less funds holding in top 10

Funds holding in top 10: 2 → 1 (-1)

Holders
141
Holders Change
+11
Holders Change %
+8.46%
% of All Funds
2.78%
Holding in Top 10
1
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-50%
% of All Funds
0.02%
New
24
Increased
37
Reduced
38
Closed
13
Calls
$8.21M
Puts
$231K
Net Calls
+$7.98M
Net Calls Change
+$7.06M

Top Buyers

1
Point72 Asset Management
Point72 Asset Management
Connecticut
+$3.46M
2
AG
Artal Group
Luxembourg
+$3.22M
3
PA
Pinnacle Associates
New York
+$2.27M
4
Balyasny Asset Management
Balyasny Asset Management
Illinois
+$1.29M
5
N
Nuveen
North Carolina
+$1.2M

Top Sellers

1
Millennium Management
Millennium Management
New York
-$7.53M
2
Citadel Advisors
Citadel Advisors
Florida
-$5M
3
Morgan Stanley
Morgan Stanley
New York
-$4.99M
4
State Street
State Street
Massachusetts
-$1.7M
5
O
OrbiMed
New York
-$1.29M
Name Holding Trade Value Shares
Change 		Change in
Stake
EC
1
EcoR1 Capital
California
$149M – – –
BlackRock
2
BlackRock
New York
$54.2M -$26.7K -2,491 -0.1%
Fidelity Investments
3
Fidelity Investments
Massachusetts
$52.7M -$485K -45,210 -1%
O
4
OrbiMed
New York
$45.9M -$1.29M -119,878 -4%
GPP
5
Great Point Partners
Connecticut
$33.3M +$374K +34,900 +2%
Dimensional Fund Advisors
6
Dimensional Fund Advisors
Texas
$29M -$26.5K -2,470 -0.1%
State Street
7
State Street
Massachusetts
$16.4M -$1.7M -158,351 -13%
PAI
8
Palo Alto Investors
California
$15.7M -$125K -11,700 -1%
Wellington Management Group
9
Wellington Management Group
Massachusetts
$15.4M -$801K -74,672 -7%
Citadel Advisors
10
Citadel Advisors
Florida
$14.6M -$5M -466,106 -34%
Vanguard Group
11
Vanguard Group
Pennsylvania
$12.2M -$898K -83,762 -10%
Geode Capital Management
12
Geode Capital Management
Massachusetts
$9.01M +$405K +37,767 +7%
Millennium Management
13
Millennium Management
New York
$8.33M -$7.53M -702,207 -57%
Northern Trust
14
Northern Trust
Illinois
$8.15M +$223K +20,816 +4%
Goldman Sachs
15
Goldman Sachs
New York
$7.43M +$1.18M +109,645 +30%
TCM
16
Tang Capital Management
California
$6.71M – – –
PA
17
Pinnacle Associates
New York
$6.33M +$2.27M +211,319 +112%
N
18
Nuveen
North Carolina
$6.03M +$1.2M +112,202 +42%
D.E. Shaw & Co
19
D.E. Shaw & Co
New York
$5.46M -$98.6K -9,195 -3%
Bank of New York Mellon
20
Bank of New York Mellon
New York
$5.33M +$28.8K +2,683 +0.8%
WP
21
Woodline Partners
California
$5.13M +$3.47M +324,005 New
Point72 Asset Management
22
Point72 Asset Management
Connecticut
$5.1M +$3.46M +322,300 New
Jacobs Levy Equity Management
23
Jacobs Levy Equity Management
New Jersey
$4.98M +$263K +24,513 +8%
LCM
24
Lonestar Capital Management
California
$4.75M – – –
AG
25
Artal Group
Luxembourg
$4.75M +$3.22M +300,000 New
1
2 3 4 5

PRTA Hedge Fund Activity: Q4 2019 in Review

141 of the 5,075 institutional investors tracked by Wall St. Rank reported a position in Prothena Corp (PRTA) for Q4 2019, worth a combined $584M — up 99% from $294M a quarter earlier.

Buyers outnumbered sellers: 24 funds opened new PRTA positions and 13 closed out — a net gain of 11 holders — while 37 added to existing stakes and 38 trimmed.

The largest buyer was Point72 Asset Management, opening a new position worth an estimated $3.46M. The largest seller was Millennium Management, cutting an estimated $7.53M.

  • 141 institutional investors held Prothena Corp (PRTA) as of Q4 2019, up from 130 in Q3 2019.
  • Funds reported $584M of Prothena Corp stock for Q4 2019, up 99% quarter-over-quarter.
  • 24 funds opened new Prothena Corp positions in Q4 2019 and 13 closed out, a net change of +11 holders.
  • The largest Prothena Corp buyer in Q4 2019 was Point72 Asset Management, an estimated $3.46M added.
  • The largest Prothena Corp seller in Q4 2019 was Millennium Management, an estimated $7.53M sold.

Based on aggregated 13F filings for Q4 2019.