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Prothena Corp
PRTA

139 hedge funds and large institutions have $480M invested in Prothena Corp in 2019 Q1 according to their latest regulatory filings, with 29 funds opening new positions, 39 increasing their positions, 30 reducing their positions, and 10 closing their positions.

New
Increased
Maintained
Reduced
Closed

190% more first-time investments, than exits

New positions opened: 29 | Existing positions closed: 10

30% more repeat investments, than reductions

Existing positions increased: 39 | Existing positions reduced: 30

16% more capital invested

Capital invested by funds: $414M → $480M (+$66M)

16% more funds holding

Funds holding: 120 → 139 (+19)

0% more funds holding in top 10

Funds holding in top 10: 2 → 2 (0)

1.56% less ownership

Funds ownership: 100.83% → 99.27% (-1.6%)

86% less call options, than puts

Call options by funds: $487K | Put options by funds: $3.38M

Holders
139
Holders Change
+19
Holders Change %
+15.83%
% of All Funds
3.01%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.04%
New
29
Increased
39
Reduced
30
Closed
10
Calls
$487K
Puts
$3.38M
Net Calls
-$2.89M
Net Calls Change
+$5.08M

Top Buyers

Rank Fund Capital Flow
1
O
OrbiMed
New York
+$30.4M
2
Morgan Stanley
Morgan Stanley
New York
+$7.26M
3
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$5.75M
4
Dimensional Fund Advisors
Dimensional Fund Advisors
Texas
+$5.13M
5
TCM
Tang Capital Management
California
+$3.45M

Top Sellers

Rank Fund Capital Flow
1
SCM
Scopia Capital Management
New York
-$50.2M
2
Wellington Management Group
Wellington Management Group
Massachusetts
-$11.8M
3
Fidelity Investments
Fidelity Investments
Massachusetts
-$9.03M
4
Bank of America
Bank of America
North Carolina
-$3.75M
5
HT
HAP Trading
New York
-$2.45M
Name Holding Trade Value Shares
Change 		Change in
Stake
PA
26
Pinnacle Associates
New York
$2.62M +$205K +16,450 +8%
American Century Companies
27
American Century Companies
Missouri
$2.5M +$2.32M +185,985 +941%
MSE
28
MUFG Securities EMEA
United Kingdom
$2.25M +$2.32M +185,600 New
JP Morgan Chase
29
JP Morgan Chase
New York
$2.07M +$1.51M +120,700 +242%
PIM
30
Platinum Investment Management
Australia
$1.96M – – –
Jacobs Levy Equity Management
31
Jacobs Levy Equity Management
New Jersey
$1.85M +$1.3M +104,313 +217%
OAM
32
Oxford Asset Management
United Kingdom
$1.73M +$1.29M +103,387 +266%
TCIM
33
TIAA CREF Investment Management
New York
$1.71M +$317K +25,420 +22%
Man Group
34
Man Group
United Kingdom
$1.55M +$22.5K +1,800 +1%
Norges Bank
35
Norges Bank
Norway
$1.45M -$1.19M -95,238 -44%
TA
36
Teachers Advisors
New York
$1.32M +$95K +7,611 +8%
Russell Investments Group
37
Russell Investments Group
United Kingdom
$956K +$266K +21,301 +37%
Swiss National Bank
38
Swiss National Bank
Switzerland
$881K +$27.5K +2,200 +3%
RhumbLine Advisers
39
RhumbLine Advisers
Massachusetts
$775K +$81K +6,488 +11%
Invesco
40
Invesco
Georgia
$756K +$299K +23,979 +63%
KA
41
Kerrisdale Advisers
Florida
$748K +$770K +61,640 New
California State Teachers Retirement System (CalSTRS)
42
California State Teachers Retirement System (CalSTRS)
California
$746K -$17.6K -1,411 -2%
PP
43
PDT Partners
New York
$714K +$735K +58,903 New
Rafferty Asset Management
44
Rafferty Asset Management
New York
$666K +$685K +54,881 New
State of Wisconsin Investment Board
45
State of Wisconsin Investment Board
Wisconsin
$653K +$154K +12,300 +30%
Acadian Asset Management
46
Acadian Asset Management
Massachusetts
$633K +$651K +52,168 New
AllianceBernstein
47
AllianceBernstein
Tennessee
$629K -$53.7K -4,300 -8%
California Public Employees Retirement System
48
California Public Employees Retirement System
California
$562K – – –
Squarepoint
49
Squarepoint
New York
$556K +$349K +27,915 +155%
HSBC Holdings
50
HSBC Holdings
United Kingdom
$527K +$542K +43,436 New
1
2
3 4 5

PRTA Hedge Fund Activity: Q1 2019 in Review

139 of the 4,620 institutional investors tracked by Wall St. Rank reported a position in Prothena Corp (PRTA) for Q1 2019, worth a combined $480M — up 16% from $414M a quarter earlier.

Buyers outnumbered sellers: 29 funds opened new PRTA positions and 10 closed out — a net gain of 19 holders — while 39 added to existing stakes and 30 trimmed.

The largest buyer was OrbiMed, opening a new position worth an estimated $30.4M. The largest seller was Scopia Capital Management, cutting an estimated $50.2M.

  • 139 institutional investors held Prothena Corp (PRTA) as of Q1 2019, up from 120 in Q4 2018.
  • Funds reported $480M of Prothena Corp stock for Q1 2019, up 16% quarter-over-quarter.
  • 29 funds opened new Prothena Corp positions in Q1 2019 and 10 closed out, a net change of +19 holders.
  • The largest Prothena Corp buyer in Q1 2019 was OrbiMed, an estimated $30.4M added.
  • The largest Prothena Corp seller in Q1 2019 was Scopia Capital Management, an estimated $50.2M sold.

Based on aggregated 13F filings for Q1 2019.