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
+$7,574,220
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% $18,927,873 +$2,113,148 1,148,536 +13% The Vanguard Group 30 Jun 2025
RENAISSANCE TECHNOLOGIES LLC 5.1% $19,452,926 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 23,332 $307,750 -$43,393 $13.19 4
2025 Q3 11,452,891 $197,565,196 +$7,574,220 $17.25 141
2025 Q2 10,993,011 $194,352,380 +$14,298,818 $17.68 129
2025 Q1 10,555,879 $173,530,169 +$7,994,151 $16.44 124
2024 Q4 10,162,073 $163,039,355 +$1,249,645 $16.05 114
2024 Q3 10,094,402 $152,047,724 -$932,175 $15.06 110
2024 Q2 10,162,499 $150,530,627 +$500,237 $14.81 114
2024 Q1 10,048,973 $160,289,579 -$2,293,756 $15.95 110
2023 Q4 10,218,087 $158,173,192 +$2,671,757 $15.48 107
2023 Q3 10,025,770 $143,089,704 -$1,925,950 $14.27 97
2023 Q2 10,185,160 $135,386,794 +$9,397,245 $13.29 87
2023 Q1 9,660,849 $97,880,446 -$2,160,579 $10.13 82
2022 Q4 10,093,278 $82,642,483 +$9,117,308 $8.19 76
2022 Q3 8,088,542 $61,793,764 +$675,723 $7.64 55
2022 Q2 8,869,308 $51,310,563 -$15,813,404 $6.30 56
2022 Q1 11,295,139 $89,401,000 -$3,259,411 $7.98 58
2021 Q4 11,489,279 $107,181,000 -$3,358,965 $9.33 65
2021 Q3 11,679,342 $119,341,123 -$20,163,078 $10.22 79
2021 Q2 13,512,804 $129,961,680 -$1,468,788 $9.62 97
2021 Q1 12,629,953 $132,490,273 -$4,443,391 $10.49 95
2020 Q4 13,013,658 $144,877,074 -$870,540 $11.13 95
2020 Q3 13,240,597 $125,760,854 -$805,777 $9.51 103
2020 Q2 12,711,204 $118,842,537 -$3,140,092 $9.35 94
2020 Q1 13,496,037 $144,272,642 -$3,068,562 $10.69 101
2019 Q4 15,026,230 $183,742,120 -$4,427,600 $12.23 105
2019 Q3 15,115,774 $180,468,431 -$12,963,202 $11.94 110
2019 Q2 16,212,581 $243,835,798 +$14,872,204 $15.04 116
2019 Q1 15,334,449 $208,859,478 -$3,154,566 $13.62 110
2018 Q4 15,646,163 $207,478,776 -$3,235,823 $13.26 109
2018 Q3 15,837,059 $243,876,713 -$566,479 $15.40 108
2018 Q2 15,916,427 $239,551,648 -$6,718,845 $15.05 108
2018 Q1 16,364,861 $244,630,822 -$3,375,659 $14.95 114
2017 Q4 16,669,769 $260,883,631 -$6,515,065 $15.65 119
2017 Q3 16,850,450 $258,744,331 -$4,521,778 $15.35 111
2017 Q2 17,361,431 $307,280,880 -$12,587,030 $17.70 113
2017 Q1 17,931,822 $340,713,621 +$77,637,197 $19.00 121
2016 Q4 17,366,859 $360,377,300 -$2,661,709 $20.75 123
2016 Q3 17,498,426 $311,803,156 +$3,866,175 $17.82 118
2016 Q2 17,292,600 $331,383,317 +$4,828,683 $19.16 126
2016 Q1 17,134,910 $299,932,394 +$4,025,194 $17.51 129
2015 Q4 16,742,068 $306,680,072 +$8,154,266 $18.32 124
2015 Q3 16,356,344 $269,229,021 -$5,395,588 $16.46 123
2015 Q2 16,393,097 $276,058,699 -$2,878,923 $16.84 117
2015 Q1 16,885,869 $323,625,462 +$8,560,747 $19.17 118
2014 Q4 16,450,781 $285,717,816 +$5,017,042 $17.36 116
2014 Q3 18,198,505 $236,763,293 +$224,834,902 $13.01 115
2014 Q2 905,057 $13,940,000 +$13,939,992 $15.36 7