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Spok Holdings
SPOK

Overview Fund Activity

124 hedge funds and large institutions have $174M invested in Spok Holdings in 2025 Q1 according to their latest regulatory filings, with 23 funds opening new positions, 41 increasing their positions, 39 reducing their positions, and 12 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
124
Holders Change
+9
Holders Change %
+7.83%
% of All Funds
1.68%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
23
Increased
41
Reduced
39
Closed
12
Calls
$898K
Puts
$52K
Net Calls
+$846K
Net Calls Change
+$358K

Top Buyers

1
BlackRock
BlackRock
New York
+$2.63M
2
Goldman Sachs
Goldman Sachs
New York
+$2.15M
3
Citadel Advisors
Citadel Advisors
Florida
+$2.03M
4
Two Sigma Investments
Two Sigma Investments
New York
+$1.05M
5
Marshall Wace
Marshall Wace
United Kingdom
+$876K

Top Sellers

1
HighTower Advisors
HighTower Advisors
Illinois
-$2.37M
2
TC
Truvestments Capital
Florida
-$1.79M
3
MF
Magnetar Financial
Illinois
-$647K
4
Prudential Financial
Prudential Financial
New Jersey
-$493K
5
Vanguard Group
Vanguard Group
Pennsylvania
-$458K
Name Holding Trade Value Shares
Change 		Shares
Change %
Two Sigma Advisers
26
Two Sigma Advisers
New York
$1.09M +$551K +33,500 +102%
Two Sigma Investments
27
Two Sigma Investments
New York
$1.05M +$1.05M +63,830 New
Charles Schwab
28
Charles Schwab
California
$909K +$32.3K +1,966 +4%
HWAM
29
Hennion & Walsh Asset Management
New Jersey
$889K +$63.1K +3,840 +8%
Marshall Wace
30
Marshall Wace
United Kingdom
$876K +$876K +53,257 New
KWM
31
Keebeck Wealth Management
Illinois
$822K – – –
II
32
Inspire Investing
Idaho
$799K -$21.6K -1,314 -3%
Millennium Management
33
Millennium Management
New York
$797K -$72.8K -4,426 -8%
Invesco
34
Invesco
Georgia
$626K -$33.2K -2,022 -5%
CSS
35
Cubist Systematic Strategies
Connecticut
$602K +$602K +36,604 New
American Century Companies
36
American Century Companies
Missouri
$561K +$68.6K +4,170 +14%
PAM
37
Panagora Asset Management
Massachusetts
$557K +$557K +33,863 New
State Board of Administration of Florida Retirement System
38
State Board of Administration of Florida Retirement System
Florida
$550K -$183K -11,145 -25%
RhumbLine Advisers
39
RhumbLine Advisers
Massachusetts
$543K -$30K -1,822 -5%
UBS Group
40
UBS Group
Switzerland
$507K -$219K -13,328 -30%
Ameriprise
41
Ameriprise
Minnesota
$506K – – –
Jane Street
42
Jane Street
New York
$467K +$467K +28,394 New
Los Angeles Capital Management
43
Los Angeles Capital Management
California
$466K -$68.2K -4,150 -13%
Man Group
44
Man Group
United Kingdom
$448K +$448K +27,244 New
EGM
45
Engineers Gate Manager
New York
$442K -$59.7K -3,634 -12%
Susquehanna International Group
46
Susquehanna International Group
Pennsylvania
$422K +$188K +11,428 +80%
GCP
47
GSA Capital Partners
United Kingdom
$422K -$182K -11,059 -30%
Barclays
48
Barclays
United Kingdom
$391K -$61.5K -3,737 -14%
Royal Bank of Canada
49
Royal Bank of Canada
Ontario, Canada
$389K -$22.3K -1,355 -5%
Wells Fargo
50
Wells Fargo
California
$385K +$65.3K +3,975 +20%
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