Spok Holdings, Inc - Common Stock, par value $0.0001 per share (SPOK) Institutional Ownership

13F Institutional Holders and Ownership History from Q2 2014 to Q4 2025

Type / Class
Equity / Common Stock, par value $0.0001 per share
Symbol
SPOK on Nasdaq
Shares outstanding
20,597,466
Price per share
$13.00
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
10,990,657
Total reported value
$145,033,772
% of total 13F portfolios
0%
Share change
-366,112
Value change
-$6,971,388
Number of holders
131
Price from insider filings
$13.00
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Spok Holdings, Inc - Common Stock, par value $0.0001 per share (SPOK) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
VANGUARD GROUP INC 5.6% +12% $20,306,116 +$2,267,018 1,148,536 +13% The Vanguard Group 30 Jun 2025
RENAISSANCE TECHNOLOGIES LLC 5.1% $18,681,572 1,056,650 Renaissance Technologies LLC 07 Apr 2025

As of 31 Dec 2025, 131 institutional investors reported holding 10,990,657 shares of Spok Holdings, Inc - Common Stock, par value $0.0001 per share (SPOK). This represents 53% of the company’s total 20,597,466 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of Spok Holdings, Inc - Common Stock, par value $0.0001 per share (SPOK) together control 46% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
BlackRock, Inc. 8.7% 1,799,549 -7% 0% $23,736,052
RENAISSANCE TECHNOLOGIES LLC 6.1% 1,246,579 +6.3% 0.03% $16,442,377
VANGUARD GROUP INC 6% 1,229,078 +6.4% 0% $16,211,540
DIMENSIONAL FUND ADVISORS LP 3.4% 703,826 -2.1% 0% $9,283,621
GEODE CAPITAL MANAGEMENT, LLC 2.9% 598,552 -0.44% 0% $7,896,462
STATE STREET CORP 2.2% 446,919 -2.3% 0% $5,894,862
HighTower Advisors, LLC 1.9% 382,375 -6.3% 0.01% $5,043,527
GOLDMAN SACHS GROUP INC 1.8% 362,471 -8.4% 0% $4,780,997
ACADIAN ASSET MANAGEMENT LLC 1.6% 322,043 -25% 0.01% $4,246,000
CSM Advisors, LLC 1.3% 262,945 -21% 0.09% $3,471,000
NORTHERN TRUST CORP 1.1% 217,094 -9.9% 0% $2,863,470
Bank of New York Mellon Corp 1% 212,816 +8.6% 0% $2,807,039
Connor, Clark & Lunn Investment Management Ltd. 0.96% 196,865 -24% 0.01% $2,596,649
Qube Research & Technologies Ltd 0.86% 178,092 +10% 0% $2,349,033
MORGAN STANLEY 0.86% 177,693 +23% 0% $2,343,791
Trexquant Investment LP 0.83% 170,653 +92% 0.02% $2,250,913
Uniplan Investment Counsel, Inc. 0.78% 160,997 -0.15% 0.21% $2,123,558
FMR LLC 0.62% 126,982 +540% 0% $1,674,888
MILLENNIUM MANAGEMENT LLC 0.61% 125,808 +345% 0% $1,659,408
North Star Investment Management Corp. 0.59% 122,000 0% 0.1% $1,609,180
JACOBS LEVY EQUITY MANAGEMENT, INC 0.58% 118,967 +85% 0.01% $1,569,175
LOS ANGELES CAPITAL MANAGEMENT LLC 0.5% 102,021 +55% 0% $1,410,950
PANAGORA ASSET MANAGEMENT INC 0.45% 93,085 +52% 0% $1,227,791
Quantinno Capital Management LP 0.45% 92,726 +760% 0% $1,223,061
JPMORGAN CHASE & CO 0.45% 91,823 -20% 0% $1,211,146

Institutional Holders of Spok Holdings, Inc - Common Stock, par value $0.0001 per share (SPOK) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 10,990,657 $145,033,772 -$6,971,388 $13.19 131
2025 Q3 11,459,241 $197,674,734 +$7,683,756 $17.25 142
2025 Q2 10,993,011 $194,352,380 +$14,298,832 $17.68 129
2025 Q1 10,555,879 $173,530,647 +$7,994,149 $16.44 124
2024 Q4 10,101,442 $162,130,804 +$263,915 $16.05 115
2024 Q3 10,094,402 $152,047,921 -$932,180 $15.06 109
2024 Q2 10,179,480 $150,782,451 +$751,732 $14.81 114
2024 Q1 10,048,973 $160,289,295 -$2,417,995 $15.95 110
2023 Q4 10,218,087 $158,173,518 +$3,309,815 $15.48 107
2023 Q3 10,025,770 $143,089,529 -$1,923,068 $14.27 97
2023 Q2 10,185,160 $135,386,811 +$9,262,997 $13.29 87
2023 Q1 9,660,849 $97,880,446 -$2,050,778 $10.13 82
2022 Q4 10,093,279 $82,642,498 +$9,298,388 $8.19 77
2022 Q3 8,931,950 $68,237,764 -$3,990,562 $7.64 57
2022 Q2 9,712,402 $61,180,000 -$11,249,120 $6.30 55
2022 Q1 11,295,410 $89,403,000 -$2,665,500 $7.98 59
2021 Q4 11,489,550 $107,184,000 -$3,437,386 $9.33 66
2021 Q3 11,679,712 $119,346,233 -$17,942,222 $10.22 80
2021 Q2 13,512,363 $129,959,490 -$4,203,854 $9.62 96
2021 Q1 13,907,824 $145,895,518 -$4,451,225 $10.49 96
2020 Q4 14,304,376 $159,241,639 -$2,211,685 $11.13 99
2020 Q3 14,658,745 $139,246,609 -$1,115,059 $9.51 106
2020 Q2 14,746,162 $137,869,212 -$1,477,198 $9.35 98
2020 Q1 14,908,703 $159,372,987 -$2,811,356 $10.69 104
2019 Q4 15,113,189 $184,805,235 -$4,253,342 $12.23 107
2019 Q3 15,243,424 $181,991,401 -$13,488,938 $11.94 115
2019 Q2 16,372,618 $246,244,318 +$15,770,195 $15.04 120
2019 Q1 15,435,276 $210,231,288 -$3,252,093 $13.62 115
2018 Q4 15,675,073 $207,862,406 -$3,279,745 $13.26 111
2018 Q3 15,873,723 $244,440,413 -$2,590,154 $15.40 113
2018 Q2 16,081,700 $242,038,441 -$6,735,628 $15.05 110
2018 Q1 16,531,059 $247,115,267 -$3,485,124 $14.95 115
2017 Q4 16,843,258 $263,598,846 -$6,783,920 $15.65 121
2017 Q3 17,041,117 $261,671,216 -$6,728,405 $15.35 113
2017 Q2 17,457,624 $308,982,880 -$10,466,268 $17.70 115
2017 Q1 18,000,865 $342,024,621 +$77,791,621 $19.00 122
2016 Q4 17,366,859 $360,377,300 -$2,666,701 $20.75 123
2016 Q3 17,498,426 $311,803,156 +$3,868,639 $17.82 118
2016 Q2 17,292,600 $331,383,317 +$4,828,707 $19.16 126
2016 Q1 17,134,910 $299,932,394 +$4,015,272 $17.51 129
2015 Q4 16,889,333 $309,378,072 +$7,919,000 $18.32 126
2015 Q3 16,426,356 $270,381,021 -$3,919,835 $16.46 124
2015 Q2 16,648,979 $280,367,699 -$4,092,062 $16.84 117
2015 Q1 16,885,869 $323,625,462 +$8,562,561 $19.17 117
2014 Q4 16,478,578 $286,200,816 +$4,329,362 $17.36 115
2014 Q3 18,230,514 $237,179,293 +$225,250,867 $13.01 115
2014 Q2 905,057 $13,940,000 +$13,940,000 $15.36 7