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
$13.19
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
11,452,891
Total reported value
$197,565,196
% of total 13F portfolios
0%
Share change
+446,351
Value change
+$7,574,218
Number of holders
141
Price from insider filings
$13.19
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 30 Sep 2025, 141 institutional investors reported holding 11,452,891 shares of Spok Holdings, Inc - Common Stock, par value $0.0001 per share (SPOK). This represents 56% 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 47% 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. 9.4% 1,935,262 +12% 0% $33,383,270
RENAISSANCE TECHNOLOGIES LLC 5.7% 1,172,550 +11% 0.03% $20,226,488
VANGUARD GROUP INC 5.6% 1,154,631 +0.53% 0% $19,917,386
DIMENSIONAL FUND ADVISORS LP 3.5% 719,050 +1.1% 0% $12,403,870
GEODE CAPITAL MANAGEMENT, LLC 2.9% 601,226 +16% 0% $10,373,296
STATE STREET CORP 2.2% 457,428 +2.8% 0% $7,890,633
ACADIAN ASSET MANAGEMENT LLC 2.1% 428,060 +9.8% 0.01% $7,383,000
HighTower Advisors, LLC 2% 408,011 -9.9% 0.01% $7,038,185
GOLDMAN SACHS GROUP INC 1.9% 395,900 -25% 0% $6,829,283
CSM Advisors, LLC 1.6% 334,345 -4.2% 0.16% $5,766,000
Connor, Clark & Lunn Investment Management Ltd. 1.3% 258,284 +30% 0.01% $4,455,399
NORTHERN TRUST CORP 1.2% 240,986 -0.83% 0% $4,157,010
Bank of New York Mellon Corp 0.95% 195,911 +0.21% 0% $3,379,473
TWO SIGMA INVESTMENTS, LP 0.82% 169,231 +56% 0% $2,919,235
Qube Research & Technologies Ltd 0.79% 161,975 +11% 0% $2,794,069
Uniplan Investment Counsel, Inc. 0.78% 161,242 -14% 0.27% $2,781,436
MORGAN STANLEY 0.7% 144,063 -5.5% 0% $2,485,095
North Star Investment Management Corp. 0.59% 122,000 0% 0.14% $2,104,500
JPMORGAN CHASE & CO 0.56% 114,533 -49% 0% $1,975,694
Trexquant Investment LP 0.43% 88,869 -20% 0.02% $1,532,990
LAZARD ASSET MANAGEMENT LLC 0.39% 80,885 +22% 0% $1,395,266
Allspring Global Investments Holdings, LLC 0.36% 74,403 0% $1,283,452
Nuveen, LLC 0.35% 72,818 0% 0% $1,256,110
TWO SIGMA ADVISERS, LP 0.33% 67,800 -14% 0% $1,169,550
UBS Group AG 0.32% 66,804 +81% 0% $1,152,370

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 42,970 $566,775 -$1,905,649 $13.19 6
2025 Q3 11,452,891 $197,565,196 +$7,574,218 $17.25 141
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