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Spok Holdings
SPOK

143 hedge funds and large institutions have $198M invested in Spok Holdings in 2025 Q3 according to their latest regulatory filings, with 25 funds opening new positions, 55 increasing their positions, 37 reducing their positions, and 12 closing their positions.

New
Increased
Maintained
Reduced
Closed

108% more first-time investments, than exits

New positions opened: 25 | Existing positions closed: 12

49% more repeat investments, than reductions

Existing positions increased: 55 | Existing positions reduced: 37

10% more funds holding

Funds holding: 130 → 143 (+13)

2.22% more ownership

Funds ownership: 53.44% → 55.65% (+2.2%)

2% more capital invested

Capital invested by funds: $194M → $198M (+$3.32M)

69% less call options, than puts

Call options by funds: $302K | Put options by funds: $964K

Holders
143
Holders Change
+13
Holders Change %
+10%
% of All Funds
1.88%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
25
Increased
55
Reduced
37
Closed
12
Calls
$302K
Puts
$964K
Net Calls
-$662K
Net Calls Change
-$96K

Top Buyers

Rank Fund Capital Flow
1
BlackRock
BlackRock
New York
+$3.78M
2
Renaissance Technologies
Renaissance Technologies
New York
+$2.06M
3
Geode Capital Management
Geode Capital Management
Massachusetts
+$1.48M
4
Allspring Global Investments
Allspring Global Investments
North Carolina
+$1.32M
5
First Trust Advisors
First Trust Advisors
Illinois
+$1.13M

Top Sellers

Rank Fund Capital Flow
1
PCM
Prelude Capital Management
New York
-$2.62M
2
Goldman Sachs
Goldman Sachs
New York
-$2.38M
3
JP Morgan Chase
JP Morgan Chase
New York
-$1.95M
4
HighTower Advisors
HighTower Advisors
Illinois
-$797K
5
Citadel Advisors
Citadel Advisors
Florida
-$749K
Name Holding Trade Value Shares
Change 		Change in
Stake
Los Angeles Capital Management
26
Los Angeles Capital Management
California
$1.13M +$33.4K +1,875 +3%
Jacobs Levy Equity Management
27
Jacobs Levy Equity Management
New Jersey
$1.11M -$8.95K -503 -0.8%
First Trust Advisors
28
First Trust Advisors
Illinois
$1.1M +$1.13M +63,519 New
PAM
29
Panagora Asset Management
Massachusetts
$1.06M +$488K +27,437 +81%
Charles Schwab
30
Charles Schwab
California
$1.05M +$3.08K +173 +0.3%
II
31
Inspire Investing
Idaho
$1.05M +$164K +9,191 +18%
Bank of America
32
Bank of America
North Carolina
$1.02M +$226K +12,679 +27%
HSBC Holdings
33
HSBC Holdings
United Kingdom
$934K +$428K +24,043 +80%
HWAM
34
Hennion & Walsh Asset Management
New Jersey
$861K -$31K -1,740 -3%
American Century Companies
35
American Century Companies
Missouri
$749K +$74.4K +4,182 +11%
AQR Capital Management
36
AQR Capital Management
Connecticut
$747K +$200K +11,226 +35%
Barclays
37
Barclays
United Kingdom
$728K -$30.1K -1,690 -4%
D.E. Shaw & Co
38
D.E. Shaw & Co
New York
$699K +$463K +26,043 +180%
Jane Street
39
Jane Street
New York
$692K +$714K +40,100 New
KWM
40
Keebeck Wealth Management
Illinois
$690K – – –
RhumbLine Advisers
41
RhumbLine Advisers
Massachusetts
$689K +$91.8K +5,158 +15%
Walleye Capital
42
Walleye Capital
New York
$619K +$98.1K +5,512 +18%
Prudential Financial
43
Prudential Financial
New Jersey
$613K -$251K -14,100 -28%
Marshall Wace
44
Marshall Wace
United Kingdom
$588K +$18K +1,009 +3%
CSS
45
Cubist Systematic Strategies
Connecticut
$586K -$88.6K -4,981 -13%
EGM
46
Engineers Gate Manager
New York
$574K +$201K +11,294 +51%
MAM
47
Martingale Asset Management
Massachusetts
$567K +$141K +7,934 +32%
Invesco
48
Invesco
Georgia
$566K -$15.8K -888 -3%
State Board of Administration of Florida Retirement System
49
State Board of Administration of Florida Retirement System
Florida
$547K +$206K +11,551 +57%
CCIA
50
Campbell & Co Investment Adviser
Maryland
$509K +$526K +29,534 New
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SPOK Hedge Fund Activity: Q3 2025 in Review

143 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Spok Holdings (SPOK) for Q3 2025, worth a combined $198M — up 1.7% from $194M a quarter earlier.

Buyers outnumbered sellers: 25 funds opened new SPOK positions and 12 closed out — a net gain of 13 holders — while 55 added to existing stakes and 37 trimmed.

The largest buyer was BlackRock, adding an estimated $3.78M. The largest seller was Prelude Capital Management, exiting entirely with an estimated $2.62M sold.

  • 143 institutional investors held Spok Holdings (SPOK) as of Q3 2025, up from 130 in Q2 2025.
  • Funds reported $198M of Spok Holdings stock for Q3 2025, up 1.7% quarter-over-quarter.
  • 25 funds opened new Spok Holdings positions in Q3 2025 and 12 closed out, a net change of +13 holders.
  • The largest Spok Holdings buyer in Q3 2025 was BlackRock, an estimated $3.78M added.
  • The largest Spok Holdings seller in Q3 2025 was Prelude Capital Management, an estimated $2.62M sold.

Based on aggregated 13F filings for Q3 2025.