Spok Holdings, Inc

SPOK

Exchange: Nasdaq
Industry: Radiotelephone Communications
SEC CIK: 0001289945

SEC filings (opens in a new tab)

In the last 90 days, Spok Holdings, Inc insiders filed 0 open-market purchases and 2 sales; 132 institutions reported holding it in 13F filings for Q2 2026, worth $110.9M in total; no superinvestor holds it.

Q1 2026 vs. Q4 2025

How the institutions holding Spok Holdings, Inc changed between Q4 2025 and Q1 2026.

All holders in Q1 2026 All holders in Q4 2025

13F holders of SPOK: Q4 2025 compared with Q1 2026
Measure	Q4 2025	Of which not filed for Q1 2026	Q1 2026	Change
Holders	134	1	139	+6
Shares	11.1M	1.23M	10.5M	+656.5K (+6.7%)
Value	$146.0M	$16.2M	$114.4M	−$15.3M (−11.8%)

1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (25)

Institutions that held Spok Holdings, Inc at the end of Q1 2026 but not at the end of Q4 2025.

Institutions new to SPOK in Q1 2026
Institution	Shares	Value	% of portfolio
Vanguard Capital Management LLC	859,530	$9.37M	0.00%
Vanguard Portfolio Management LLC	265,028	$2.89M	0.00%
Vanguard Fiduciary Trust Co	129,248	$1.41M	0.00%
Marshall Wace, LLP	112,789	$1.23M	0.00%
United Capital Financial Advisers, LLC	104,723	$1.14M	0.01%
Fidelis Capital Partners, LLC	75,001	$817.5K	0.06%
Numerai GP LLC	69,016	$752.3K	0.08%
Dynamic Technology Lab Private Ltd	37,544	$409.2K	0.07%
Bridgeway Capital Management, LLC	26,600	$289.9K	0.01%
Empowered Funds, LLC	15,203	$165.7K	0.00%
EntryPoint Capital, LLC	14,850	$161.9K	0.05%
Susquehanna International Group, LLP	13,064	$142.4K	0.00%
Brady Martz Wealth Solutions, LLC	12,220	$133.2K	0.02%
Buckingham Strategic Partners	12,111	$132.0K	0.00%
Quadrature Capital Ltd	11,367	$123.9K	0.00%
Axq Capital, LP	10,283	$112.1K	0.01%
Redhawk Wealth Advisors, Inc.	10,134	$110.5K	0.01%
Vanguard Global Advisers, LLC	8,987	$98.0K	0.00%
JPL Wealth Management, LLC	55	$600	0.00%
Huntington National Bank	40	$436	0.00%
Basecamp Wealth Advisors LLC	40	$436	0.00%
Sound Income Strategies, LLC	29	$322	0.00%
Wealth Preservation Advisors, LLC	13	$142	0.00%
SJS Investment Consulting Inc.	10	$109	0.00%
Sunbelt Securities, Inc.	2	$22	0.00%

Sold out (19)

Institutions that held Spok Holdings, Inc at the end of Q4 2025 and filed for Q1 2026 without it.

Institutions that sold out of SPOK in Q1 2026
Institution	Shares, Q4 2025	Value, Q4 2025
Acadian Asset Management LLC	322,043	$4.25M
Los Angeles Capital Management LLC	102,021	$1.41M
Two Sigma Advisers, LP	42,072	$554.9K
State Board of Administration of Florida Retirement System	22,698	$299.4K
Boothbay Fund Management, LLC	22,231	$293.2K
Brevan Howard Capital Management LP	19,185	$253.1K
Hillsdale Investment Management Inc.	14,100	$186.0K
Algert Global LLC	12,080	$159.3K
Carlson Financial, Inc.	11,233	$148.2K
Quest Partners LLC	9,168	$120.9K
Kestra Advisory Services, LLC	1,738	$22.9K
GWM Advisors LLC	643	$8.48K
Amalgamated Bank	640	$8.00K
Parallel Advisors, LLC	258	$3.40K
Cornerstone Financial Management LLC	105	$1.39K
Zions Bancorporation, National Association	61	$805
SageView Advisory Group, LLC	60	$792
Private Wealth Management Group, LLC	34	$449
Kayne Anderson Rudnick Investment Management LLC	30	$396

Not filed for Q1 2026 yet (1)

Institutions that held Spok Holdings, Inc at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding SPOK in Q4 2025 that haven't filed for Q1 2026
Institution	Shares, Q4 2025	Value, Q4 2025
Vanguard Group Inc	1,229,078	$16.2M