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.

Q4 2025 vs. Q3 2025

How the institutions holding Spok Holdings, Inc changed between Q3 2025 and Q4 2025.

All holders in Q4 2025 All holders in Q3 2025

13F holders of SPOK: Q3 2025 compared with Q4 2025
Measure	Q3 2025	Of which not filed for Q4 2025	Q4 2025	Change
Holders	143	3	134	−6
Shares	11.5M	34.3K	11.1M	−362.8K (−3.2%)
Value	$197.7M	$591.2K	$146.0M	−$51.1M (−25.9%)

3 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (22)

Institutions that held Spok Holdings, Inc at the end of Q4 2025 but not at the end of Q3 2025.

Institutions new to SPOK in Q4 2025
Institution	Shares	Value	% of portfolio
Boothbay Fund Management, LLC	22,231	$293.2K	0.01%
Magnetar Financial LLC	21,481	$283.3K	0.00%
Brevan Howard Capital Management LP	19,185	$253.1K	0.00%
Point72 Asset Management, L.P.	18,725	$247.0K	0.00%
Squarepoint Ops LLC	16,112	$212.5K	0.00%
Canada Pension Plan Investment Board	15,200	$200.5K	0.00%
Cambria Investment Management, L.P.	12,154	$160.3K	0.01%
Carlson Financial, Inc.	11,233	$148.2K	0.09%
State of Wisconsin Investment Board	11,100	$146.4K	0.00%
Oxford Asset Management LLP	10,352	$136.5K	0.05%
Versant Capital Management, Inc	6,650	$87.7K	0.01%
Aquatic Capital Management LLC	4,966	$65.5K	0.00%
Triumph Capital Management	4,801	$63.3K	0.01%
Kestra Advisory Services, LLC	1,738	$22.9K	0.00%
Rockefeller Capital Management L.P.	550	$7.25K	0.00%
UBS Asset Management Americas Inc	138	$1.82K	0.00%
Cornerstone Financial Management LLC	105	$1.39K	0.00%
Zions Bancorporation, National Association	61	$805	0.00%
SageView Advisory Group, LLC	60	$792	0.00%
Godfrey Financial Associates, Inc.	50	$660	0.00%
True Wealth Design, LLC	45	$594	0.00%
MAI Capital Management	24	$317	0.00%

Sold out (28)

Institutions that held Spok Holdings, Inc at the end of Q3 2025 and filed for Q4 2025 without it.

Institutions that sold out of SPOK in Q4 2025
Institution	Shares, Q3 2025	Value, Q3 2025
Lazard Asset Management LLC	80,885	$1.40M
Allspring Global Investments Holdings, LLC	74,403	$1.28M
CWM Advisors, LLC	60,695	$1.05M
Walleye Capital LLC	35,856	$618.5K
Prudential Financial Inc	35,540	$613.1K
Marshall Wace, LLP	34,084	$588.0K
Stifel Financial Corp	23,917	$412.6K
ExodusPoint Capital Management, LP	23,350	$402.8K
Petrus Trust Company, LTA	21,667	$373.8K
Wiley Bros.-Aintree Capital, LLC	21,600	$372.6K
Creative Planning	20,785	$358.5K
R Squared Ltd	19,227	$331.7K
Atom Investors LP	17,827	$307.5K
Cerity Partners LLC	13,454	$232.1K
Raymond James Financial Inc	10,843	$187.0K
Jump Financial, LLC	10,700	$184.6K
Longboard Asset Management, LP	10,350	$178.5K
Virtus Investment Advisers, Inc.	9,866	$170.2K
Group One Trading, L.P.	2,725	$47.0K
Hager Investment Management Services, LLC	1,998	$34.5K
Signaturefd, LLC	1,605	$27.7K
RMG Wealth Management LLC	1,304	$21.0K
Mechanics Financial Corp	813	$14.0K
Bank of New Hampshire	570	$9.83K
Clearstead Advisors, LLC	249	$4.30K
JPL Wealth Management, LLC	55	$949
US Bancorp	29	$501
Massmutual Trust Co FSB	16	$276

Not filed for Q4 2025 yet (3)

Institutions that held Spok Holdings, Inc at the end of Q3 2025 and haven't filed a 13F for Q4 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding SPOK in Q3 2025 that haven't filed for Q4 2025
Institution	Shares, Q3 2025	Value, Q3 2025
Cubist Systematic Strategies, LLC	33,983	$586.2K
Point72 Asia (Singapore) Pte. Ltd.	255	$4.40K
Point72 (DIFC) Ltd	35	$601