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Prothena Corp
PRTA

153 hedge funds and large institutions have $2.79B invested in Prothena Corp in 2017 Q3 according to their latest regulatory filings, with 25 funds opening new positions, 51 increasing their positions, 34 reducing their positions, and 16 closing their positions.

New
Increased
Maintained
Reduced
Closed

100% more funds holding in top 10

Funds holding in top 10: 1 → 2 (+1)

56% more first-time investments, than exits

New positions opened: 25 | Existing positions closed: 16

50% more repeat investments, than reductions

Existing positions increased: 51 | Existing positions reduced: 34

21% more capital invested

Capital invested by funds: $2.3B → $2.79B (+$490M)

6% more funds holding

Funds holding: 145 → 153 (+8)

0.75% more ownership

Funds ownership: 111.84% → 112.59% (+0.75%)

7% less call options, than puts

Call options by funds: $10.9M | Put options by funds: $11.7M

Holders
153
Holders Change
+8
Holders Change %
+5.52%
% of All Funds
3.81%
Holding in Top 10
2
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+100%
% of All Funds
0.05%
New
25
Increased
51
Reduced
34
Closed
16
Calls
$10.9M
Puts
$11.7M
Net Calls
-$849K
Net Calls Change
+$954K

Top Buyers

1
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
+$62.9M
2
PI
Putnam Investments
Massachusetts
+$15.9M
3
Wellington Management Group
Wellington Management Group
Massachusetts
+$5.98M
4
PC
PointState Capital
New York
+$4.89M
5
BlackRock
BlackRock
New York
+$3.6M

Top Sellers

1
RG
Redmile Group
California
-$27.6M
2
Citadel Advisors
Citadel Advisors
Florida
-$14.9M
3
Wells Fargo
Wells Fargo
California
-$14.7M
4
ORI
Oak Ridge Investments
Illinois
-$7.21M
5
OM
Opaleye Management
Massachusetts
-$4.6M
Name Holding Trade Value Shares
Change 		Change in
Stake
Envestnet Asset Management
126
Envestnet Asset Management
Illinois
$11K – – –
LJHT
127
Laurie J. Hall Trustee
$9.07K – – –
QT
128
Quantbot Technologies
New York
$6K -$108K -1,763 -94%
GWM
129
Geneos Wealth Management
Colorado
$5K -$2.21K -36 -31%
HNB
130
Huntington National Bank
Ohio
$5K – – –
BDWM
131
Brewin Dolphin Wealth Management
Ireland
$4.02K +$3.8K +62 New
CAW
132
Cornerstone Advisors (Washington)
Washington
$4K – – –
UBS AM
133
UBS AM
Illinois
$3.11K – – –
SSB
134
Sandy Spring Bank
Maryland
$3K – – –
KTC
135
Kistler-Tiffany Companies
Pennsylvania
$2K – – –
WT
136
Whittier Trust
California
$2K – – –
ClearBridge Investments
137
ClearBridge Investments
New York
$2K +$1.47K +24 New
AFNAS
138
American Financial Network Advisory Services
California
$2K +$1.96K +32 New
CFA
139
Camarda Financial Advisors
Florida
$1K – – –
Fifth Third Bancorp
140
Fifth Third Bancorp
Ohio
$1K – – –
WWM
141
Willingdon Wealth Management
North Carolina
$1K +$735 +12 New
JFA
142
JNBA Financial Advisors
Minnesota
$1K +$858 +14 New
AG
143
Advisor Group
Arizona
$1K +$1.41K +23 New
RG
144
Redmile Group
California
– -$27.6M -509,698 Closed
Citadel Advisors
145
Citadel Advisors
Florida
– -$14.9M -243,642 Closed
OM
146
Opaleye Management
Massachusetts
– -$4.6M -85,000 Closed
HIM
147
Hillhouse Investment Management
Cayman Islands
– -$4.06M -75,000 Closed
IBT
148
International Biotechnology Trust
United Kingdom
– -$2.27M -42,000 Closed
Susquehanna International Group
149
Susquehanna International Group
Pennsylvania
– -$1.82M -29,755 Closed
BCM
150
Barometer Capital Management
Ontario, Canada
– -$373K -6,900 Closed
3 4 5
6
7

PRTA Hedge Fund Activity: Q3 2017 in Review

153 of the 4,011 institutional investors tracked by Wall St. Rank reported a position in Prothena Corp (PRTA) for Q3 2017, worth a combined $2.79B — up 21% from $2.3B a quarter earlier.

Buyers outnumbered sellers: 25 funds opened new PRTA positions and 16 closed out — a net gain of 9 holders — while 51 added to existing stakes and 34 trimmed.

The largest buyer was T. Rowe Price Associates, adding an estimated $62.9M. The largest seller was Redmile Group, exiting entirely with an estimated $27.6M sold.

  • 153 institutional investors held Prothena Corp (PRTA) as of Q3 2017, up from 145 in Q2 2017.
  • Funds reported $2.79B of Prothena Corp stock for Q3 2017, up 21% quarter-over-quarter.
  • 25 funds opened new Prothena Corp positions in Q3 2017 and 16 closed out, a net change of +9 holders.
  • The largest Prothena Corp buyer in Q3 2017 was T. Rowe Price Associates, an estimated $62.9M added.
  • The largest Prothena Corp seller in Q3 2017 was Redmile Group, an estimated $27.6M sold.

Based on aggregated 13F filings for Q3 2017.