Spok Holdings, Inc
SPOK- Exchange
- Nasdaq
- Industry
- Radiotelephone Communications
- SEC CIK
- 0001289945
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.
13F holders, Q4 2025
Institutional positions in Spok Holdings, Inc as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 134
- −6 vs. Q3 2025
- Shares held
- 11.1M
- −362.8K (−3.2%) vs. Q3 2025
- Total value
- $146.0M
- −$51.1M (−25.9%) vs. Q3 2025
- New holders
- 22
- 40 more added
- Sold out
- 28
- 54 more reduced
3 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting SPOK on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 132 | $110.9M |
| Q1 2026 | 139 | $114.4M |
| Q4 2025 | 134 | $146.0M |
| Q3 2025 | 143 | $197.7M |
| Q2 2025 | 130 | $194.4M |
| Q1 2025 | 125 | $173.5M |
| Q4 2024 | 116 | $162.1M |
| Q3 2024 | 109 | $152.0M |
| Q2 2024 | 114 | $150.8M |
| Q1 2024 | 111 | $160.3M |
| Q4 2023 | 107 | $158.2M |
| Q3 2023 | 97 | $143.1M |
| Q2 2023 | 87 | $135.4M |
| Q1 2023 | 85 | $98.1M |
| Q4 2022 | 78 | $82.6M |
| Q3 2022 | 60 | $68.2M |
| Q2 2022 | 62 | $61.6M |
| Q1 2022 | 62 | $89.4M |
| Q4 2021 | 71 | $107.6M |
| Q3 2021 | 87 | $119.8M |
| Q2 2021 | 103 | $130.0M |
| Q1 2021 | 102 | $145.9M |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Spok Holdings, Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Campbell & CO Investment Adviser LLC | 49,038 | $646.8K | 0.03% | +19,504+66.0% | Added |
| Citadel Advisors LLC | 49,692 | $655.4K | 0.00% | +26,335+112.7% | Added |
| UBS Group AG | 56,955 | $751.2K | 0.00% | −9,849−14.7% | Reduced |
| HSBC Holdings PLC | 60,331 | $797.0K | 0.00% | +6,262+11.6% | Added |
| Charles Schwab Investment Management Inc | 60,989 | $804.4K | 0.00% | −114−0.2% | Reduced |
| Two Sigma Investments, LP | 62,587 | $825.5K | 0.00% | −106,644−63.0% | Reduced |
| First Trust Advisors LP | 65,119 | $858.9K | 0.00% | +1,600+2.5% | Added |
| D. E. Shaw & Co., Inc. | 70,628 | $931.6K | 0.00% | +30,086+74.2% | Added |
| Nuveen, LLC | 72,818 | $960.5K | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 91,823 | $1.21M | 0.00% | −22,710−19.8% | Reduced |
| Quantinno Capital Management LP | 92,726 | $1.22M | 0.00% | +81,941+759.8% | Added |
| Panagora Asset Management Inc | 93,085 | $1.23M | 0.00% | +31,859+52.0% | Added |
| Los Angeles Capital Management LLC | 102,021 | $1.41M | 0.00% | +36,336+55.3% | Added |
| Jacobs Levy Equity Management, Inc | 118,967 | $1.57M | 0.01% | +54,803+85.4% | Added |
| North Star Investment Management Corp. | 122,000 | $1.61M | 0.10% | 00.0% | Unchanged |
| Millennium Management LLC | 125,808 | $1.66M | 0.00% | +97,515+344.7% | Added |
| FMR LLC | 126,982 | $1.67M | 0.00% | +107,153+540.4% | Added |
| Uniplan Investment Counsel, Inc. | 160,997 | $2.12M | 0.21% | −245−0.2% | Reduced |
| Trexquant Investment LP | 170,653 | $2.25M | 0.02% | +81,784+92.0% | Added |
| Morgan Stanley | 177,693 | $2.34M | 0.00% | +33,630+23.3% | Added |
| Qube Research & Technologies Ltd | 178,092 | $2.35M | 0.00% | +16,117+10.0% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 196,865 | $2.60M | 0.01% | −61,419−23.8% | Reduced |
| Bank of New York Mellon Corp | 212,816 | $2.81M | 0.00% | +16,905+8.6% | Added |
| Northern Trust Corp | 217,094 | $2.86M | 0.00% | −23,892−9.9% | Reduced |
| CSM Advisors, LLC | 262,945 | $3.47M | 0.09% | −71,400−21.4% | Reduced |
| Acadian Asset Management LLC | 322,043 | $4.25M | 0.01% | −106,017−24.8% | Reduced |
| Goldman Sachs Group Inc | 362,471 | $4.78M | 0.00% | −33,429−8.4% | Reduced |
| HighTower Advisors, LLC | 382,375 | $5.04M | 0.01% | −25,636−6.3% | Reduced |
| State Street Corp | 446,919 | $5.89M | 0.00% | −10,509−2.3% | Reduced |
| Geode Capital Management, LLC | 598,552 | $7.90M | 0.00% | −2,674−0.4% | Reduced |
| Dimensional Fund Advisors LP | 703,826 | $9.28M | 0.00% | −15,224−2.1% | Reduced |
| Vanguard Group Inc | 1,229,078 | $16.2M | 0.00% | +74,447+6.4% | Added |
| Renaissance Technologies LLC | 1,246,579 | $16.4M | 0.03% | +74,029+6.3% | Added |
| BlackRock, Inc. | 1,799,549 | $23.7M | 0.00% | −135,713−7.0% | Reduced |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −80,885−100.0% | Sold out |
| Allspring Global Investments Holdings, LLC | 0 | $0 | 0.00% | −74,403−100.0% | Sold out |
| CWM Advisors, LLC | 0 | $0 | 0.00% | −60,695−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −35,856−100.0% | Sold out |
| Prudential Financial Inc | 0 | $0 | 0.00% | −35,540−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −34,084−100.0% | Sold out |
| Stifel Financial Corp | 0 | $0 | 0.00% | −23,917−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −23,350−100.0% | Sold out |
| Petrus Trust Company, LTA | 0 | $0 | 0.00% | −21,667−100.0% | Sold out |
| Wiley Bros.-Aintree Capital, LLC | 0 | $0 | 0.00% | −21,600−100.0% | Sold out |
| Creative Planning | 0 | $0 | 0.00% | −20,785−100.0% | Sold out |
| R Squared Ltd | 0 | $0 | 0.00% | −19,227−100.0% | Sold out |
| Atom Investors LP | 0 | $0 | 0.00% | −17,827−100.0% | Sold out |
| Cerity Partners LLC | 0 | $0 | 0.00% | −13,454−100.0% | Sold out |
| Raymond James Financial Inc | 0 | $0 | 0.00% | −10,843−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −10,700−100.0% | Sold out |
| Longboard Asset Management, LP | 0 | $0 | 0.00% | −10,350−100.0% | Sold out |
| Virtus Investment Advisers, Inc. | 0 | $0 | 0.00% | −9,866−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −2,725−100.0% | Sold out |
| Hager Investment Management Services, LLC | 0 | $0 | 0.00% | −1,998−100.0% | Sold out |
| Signaturefd, LLC | 0 | $0 | 0.00% | −1,605−100.0% | Sold out |
| RMG Wealth Management LLC | 0 | $0 | 0.00% | −1,304−100.0% | Sold out |
| Mechanics Financial Corp | 0 | $0 | 0.00% | −813−100.0% | Sold out |
| Bank of New Hampshire | 0 | $0 | 0.00% | −570−100.0% | Sold out |
| Clearstead Advisors, LLC | 0 | $0 | 0.00% | −249−100.0% | Sold out |
| JPL Wealth Management, LLC | 0 | $0 | 0.00% | −55−100.0% | Sold out |
| US Bancorp | 0 | $0 | 0.00% | −29−100.0% | Sold out |
| Massmutual Trust Co FSB | 0 | $0 | 0.00% | −16−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | – | – | – | – | Not filed |
| Point72 Asia (Singapore) Pte. Ltd. | – | – | – | – | Not filed |
| Point72 (DIFC) Ltd | – | – | – | – | Not filed |