PLANO, TX
SPOK HOLDINGS, INCSPOK— Latest position per institution from SEC 13F filings
15
Institutional holders
22.23M
Total shares held
126.13M
Estimated value
1.11M
Avg. position size
KINGSTONE CAPITAL PARTNERS TEXAS, LLC
CIK 2057208
Shares
11.18M
Value
164.89K
Filed
Jun 30, 2025
BLACKROCK, INC.
CIK 2012383
Shares
1.68M
Value
18.27M
Filed
Mar 31, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
1.43M
Value
21.13M
Filed
Jun 30, 2024
RENAISSANCE TECHNOLOGIES LLC
CIK 1037389
Shares
1.26M
Value
13.75M
Filed
Mar 31, 2026
VANGUARD GROUP INC
CIK 102909
Shares
1.23M
Value
16.21M
Filed
Dec 31, 2025
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
859.53K
Value
9.37M
Filed
Mar 31, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
715.87K
Value
7.80M
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
545.72K
Value
5.95M
Filed
Mar 31, 2026
STATE STREET CORP
CIK 93751
Shares
461.79K
Value
5.03M
Filed
Mar 31, 2026
HIGHTOWER ADVISORS, LLC
CIK 1462245
Shares
381.81K
Value
4.16M
Filed
Mar 31, 2026
FOUNDRY PARTNERS, LLC
CIK 1573913
Shares
359.93K
Value
5.92M
Filed
Mar 31, 2025
ACADIAN ASSET MANAGEMENT LLC
CIK 916542
Shares
322.04K
Value
4.25K
Filed
Dec 31, 2025
PARALLAX VOLATILITY ADVISERS, L.P.
CIK 1521001
Shares
292.66K
Value
4.18M
Filed
Sep 30, 2023
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
265.03K
Value
2.89M
Filed
Mar 31, 2026
GOLDMAN SACHS GROUP INC
CIK 886982
Shares
219.58K
Value
2.39M
Filed
Mar 31, 2026
BANK OF NEW YORK MELLON CORP
CIK 1390777
Shares
217.80K
Value
2.37M
Filed
Mar 31, 2026
NORTHERN TRUST CORP
CIK 73124
Shares
216.54K
Value
2.36M
Filed
Mar 31, 2026
CSM ADVISORS, LLC
CIK 1863523
Shares
213.13K
Value
2.32K
Filed
Mar 31, 2026
UNIPLAN INVESTMENT COUNSEL, INC.
CIK 1520710
Shares
209.60K
Value
2.28M
Filed
Mar 31, 2026
QUBE RESEARCH & TECHNOLOGIES LTD
CIK 1729829
Shares
172.06K
Value
1.88M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | KINGSTONE CAPITAL PARTNERS TEXAS, LLC | 2057208 | 11.18M | 164.89K | Jun 30, 2025 |
| 2 | BLACKROCK, INC. | 2012383 | 1.68M | 18.27M | Mar 31, 2026 |
| 3 | BLACKROCK FINANCE, INC. | 1364742 | 1.43M | 21.13M | Jun 30, 2024 |
| 4 | RENAISSANCE TECHNOLOGIES LLC | 1037389 | 1.26M | 13.75M | Mar 31, 2026 |
| 5 | VANGUARD GROUP INC | 102909 | 1.23M | 16.21M | Dec 31, 2025 |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 859.53K | 9.37M | Mar 31, 2026 |
| 7 | DIMENSIONAL FUND ADVISORS LP | 354204 | 715.87K | 7.80M | Mar 31, 2026 |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 545.72K | 5.95M | Mar 31, 2026 |
| 9 | STATE STREET CORP | 93751 | 461.79K | 5.03M | Mar 31, 2026 |
| 10 | HIGHTOWER ADVISORS, LLC | 1462245 | 381.81K | 4.16M | Mar 31, 2026 |
| 11 | FOUNDRY PARTNERS, LLC | 1573913 | 359.93K | 5.92M | Mar 31, 2025 |
| 12 | ACADIAN ASSET MANAGEMENT LLC | 916542 | 322.04K | 4.25K | Dec 31, 2025 |
| 13 | PARALLAX VOLATILITY ADVISERS, L.P. | 1521001 | 292.66K | 4.18M | Sep 30, 2023 |
| 14 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 265.03K | 2.89M | Mar 31, 2026 |
| 15 | GOLDMAN SACHS GROUP INC | 886982 | 219.58K | 2.39M | Mar 31, 2026 |
| 16 | BANK OF NEW YORK MELLON CORP | 1390777 | 217.80K | 2.37M | Mar 31, 2026 |
| 17 | NORTHERN TRUST CORP | 73124 | 216.54K | 2.36M | Mar 31, 2026 |
| 18 | CSM ADVISORS, LLC | 1863523 | 213.13K | 2.32K | Mar 31, 2026 |
| 19 | UNIPLAN INVESTMENT COUNSEL, INC. | 1520710 | 209.60K | 2.28M | Mar 31, 2026 |
| 20 | QUBE RESEARCH & TECHNOLOGIES LTD | 1729829 | 172.06K | 1.88M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.