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Prothena Corp

144 hedge funds and large institutions have $1.48B invested in Prothena Corp in 2016 Q1 according to their latest regulatory filings, with 20 funds opening new positions, 63 increasing their positions, 34 reducing their positions, and 35 closing their positions.

New
Increased
Maintained
Reduced
Closed

85% more repeat investments, than reductions

Existing positions increased: 63 | Existing positions reduced: 34

11% less funds holding

Funds holding: 161144 (-17)

15% less call options, than puts

Call options by funds: $10.5M | Put options by funds: $12.3M

31% less capital invested

Capital invested by funds: $2.13B → $1.48B (-$651M)

33% less funds holding in top 10

Funds holding in top 10: 32 (-1)

43% less first-time investments, than exits

New positions opened: 20 | Existing positions closed: 35

Holders
144
Holders Change
-17
Holders Change %
-10.56%
% of All Funds
3.84%
Holding in Top 10
2
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-33.33%
% of All Funds
0.05%
New
20
Increased
63
Reduced
34
Closed
35
Calls
$10.5M
Puts
$12.3M
Net Calls
-$1.82M
Net Calls Change
+$400K
Name Holding Trade Value Shares
Change
Change in
Stake
WIM
1
Woodford Investment Management
United Kingdom
$383M +$114M +2,916,700 +46%
Fidelity Investments
2
Fidelity Investments
Massachusetts
$212M +$16.3M +417,597 +9%
T. Rowe Price Associates
3
T. Rowe Price Associates
Maryland
$137M +$8.9M +227,300 +7%
Wellington Management Group
4
Wellington Management Group
Massachusetts
$132M +$28.3M +722,889 +29%
Capital World Investors
5
Capital World Investors
California
$54.5M +$3.91M +100,000 +8%
BFA
6
BlackRock Fund Advisors
California
$51.4M +$4.44M +113,332 +10%
State Street
7
State Street
Massachusetts
$50.4M +$16.2M +415,089 +51%
VAM
8
Visium Asset Management
New York
$36.7M -$3.41M -87,071 -9%
BIT
9
BlackRock Institutional Trust
California
$34.9M +$2.95M +75,385 +10%
PAI
10
Palo Alto Investors
California
$28.6M
Vanguard Group
11
Vanguard Group
Pennsylvania
$23.4M +$1.88M +48,050 +9%
PA
12
Pinnacle Associates
New York
$18.2M +$5.67M +144,860 +49%
AllianceBernstein
13
AllianceBernstein
Tennessee
$17.2M +$1.93M +49,356 +13%
Wells Fargo
14
Wells Fargo
California
$17.2M +$6.7M +171,097 +70%
Jennison Associates
15
Jennison Associates
New York
$16.9M +$157K +4,018 +1%
SAM
16
Sectoral Asset Management
Quebec, Canada
$16.4M +$15.6M +398,100 New
Northern Trust
17
Northern Trust
Illinois
$15.9M +$1.29M +33,030 +9%
ORI
18
Oak Ridge Investments
Illinois
$15.3M -$202K -5,174 -1%
BB
19
BB Biotech
Switzerland
$14.4M +$1.17M +30,000 +9%
Norges Bank
20
Norges Bank
Norway
$13.6M -$710K -18,153 -5%
RSCM
21
Rock Springs Capital Management
Maryland
$12.7M +$2.35M +60,000 +24%
Invesco
22
Invesco
Georgia
$11.8M -$3.43M -87,611 -23%
Millennium Management
23
Millennium Management
New York
$10.2M +$9.6M +245,388 +7,830%
Axa
24
Axa
France
$7.87M -$318K -8,113 -4%
TI
25
Turner Investments
Pennsylvania
$7.67M +$1.42M +36,190 +24%

PRTA Hedge Fund Activity: Q1 2016 in Review

144 of the 3,753 institutional investors tracked by Wall St. Rank reported a position in Prothena Corp (PRTA) for Q1 2016, worth a combined $1.48B — down 31% from $2.13B a quarter earlier.

Sellers outnumbered buyers: 35 funds closed out of PRTA and 20 opened new positions — a net loss of 15 holders — while 34 trimmed existing stakes and 63 added.

The largest buyer was Woodford Investment Management, adding an estimated $114M. The largest seller was Citadel Advisors, exiting entirely with an estimated $18.4M sold.

  • 144 institutional investors held Prothena Corp (PRTA) as of Q1 2016, down from 161 in Q4 2015.
  • Funds reported $1.48B of Prothena Corp stock for Q1 2016, down 31% quarter-over-quarter.
  • 20 funds opened new Prothena Corp positions in Q1 2016 and 35 closed out, a net change of -15 holders.
  • The largest Prothena Corp buyer in Q1 2016 was Woodford Investment Management, an estimated $114M added.
  • The largest Prothena Corp seller in Q1 2016 was Citadel Advisors, an estimated $18.4M sold.

Based on aggregated 13F filings for Q1 2016.