SPOK HOLDINGS, INC

PublicCIK: 1289945
SPOKNASDAQ
Location

PLANO, TX

13F Filings

Institutional Holders

SPOK HOLDINGS, INCSPOK— Latest position per institution from SEC 13F filings

15

Institutional holders

22.40M

Total shares held

123.19M

Estimated value

1.12M

Avg. position size

1

KINGSTONE CAPITAL PARTNERS TEXAS, LLC

CIK 2057208

Shares

11.18M

Value

164.89K

Filed

Jun 30, 2025

2

BLACKROCK, INC.

CIK 2012383

Shares

1.72M

Value

17.60M

Filed

Jun 30, 2026

3

BLACKROCK FINANCE, INC.

CIK 1364742

Shares

1.43M

Value

21.13M

Filed

Jun 30, 2024

4

VANGUARD GROUP INC

CIK 102909

Shares

1.23M

Value

16.21M

Filed

Dec 31, 2025

5

RENAISSANCE TECHNOLOGIES LLC

CIK 1037389

Shares

1.15M

Value

11.76M

Filed

Jun 30, 2026

6

VANGUARD CAPITAL MANAGEMENT LLC

CIK 2100119

Shares

872.36K

Value

8.93M

Filed

Jun 30, 2026

7

DIMENSIONAL FUND ADVISORS LP

CIK 354204

Shares

717.62K

Value

7.35M

Filed

Jun 30, 2026

8

GEODE CAPITAL MANAGEMENT, LLC

CIK 1214717

Shares

595.84K

Value

6.10M

Filed

Jun 30, 2026

9

STATE STREET CORP

CIK 93751

Shares

471.58K

Value

4.83M

Filed

Jun 30, 2026

10

FOUNDRY PARTNERS, LLC

CIK 1573913

Shares

359.93K

Value

5.92M

Filed

Mar 31, 2025

11

HIGHTOWER ADVISORS, LLC

CIK 1462245

Shares

339.89K

Value

3.48M

Filed

Jun 30, 2026

12

ACADIAN ASSET MANAGEMENT LLC

CIK 916542

Shares

322.04K

Value

4.25K

Filed

Dec 31, 2025

13

PARALLAX VOLATILITY ADVISERS, L.P.

CIK 1521001

Shares

292.66K

Value

4.18M

Filed

Sep 30, 2023

14

QUBE RESEARCH & TECHNOLOGIES LTD

CIK 1729829

Shares

287.62K

Value

2.95M

Filed

Jun 30, 2026

15

GOLDMAN SACHS GROUP INC

CIK 886982

Shares

281.98K

Value

2.89M

Filed

Jun 30, 2026

16

VANGUARD PORTFOLIO MANAGEMENT LLC

CIK 2100121

Shares

273.28K

Value

2.80M

Filed

Jun 30, 2026

17

BANK OF NEW YORK MELLON CORP

CIK 1390777

Shares

234.11K

Value

2.40M

Filed

Jun 30, 2026

18

NORTHERN TRUST CORP

CIK 73124

Shares

222.90K

Value

2.28M

Filed

Jun 30, 2026

19

UNIPLAN INVESTMENT COUNSEL, INC.

CIK 1520710

Shares

215.76K

Value

2.21M

Filed

Jun 30, 2026

20

CSM ADVISORS, LLC

CIK 1863523

Shares

212.91K

Value

2.18K

Filed

Jun 30, 2026

Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.