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, Q3 2025
Institutional positions in Spok Holdings, Inc as of Sep 30, 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
- 143
- +13 vs. Q2 2025
- Shares held
- 11.5M
- +466.2K (+4.2%) vs. Q2 2025
- Total value
- $197.7M
- +$3.32M (+1.7%) vs. Q2 2025
- New holders
- 25
- 55 more added
- Sold out
- 12
- 37 more reduced
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Spok Holdings, Inc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 1,935,262 | $33.4M | 0.00% | +212,388+12.3% | Added |
| Renaissance Technologies LLC | 1,172,550 | $20.2M | 0.03% | +115,900+11.0% | Added |
| Vanguard Group Inc | 1,154,631 | $19.9M | 0.00% | +6,095+0.5% | Added |
| Dimensional Fund Advisors LP | 719,050 | $12.4M | 0.00% | +8,160+1.1% | Added |
| Geode Capital Management, LLC | 601,226 | $10.4M | 0.00% | +82,899+16.0% | Added |
| State Street Corp | 457,428 | $7.89M | 0.00% | +12,251+2.8% | Added |
| Acadian Asset Management LLC | 428,060 | $7.38M | 0.01% | +38,051+9.8% | Added |
| HighTower Advisors, LLC | 408,011 | $7.04M | 0.01% | −44,798−9.9% | Reduced |
| Goldman Sachs Group Inc | 395,900 | $6.83M | 0.00% | −133,986−25.3% | Reduced |
| CSM Advisors, LLC | 334,345 | $5.77M | 0.16% | −14,840−4.2% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 258,284 | $4.46M | 0.01% | +59,306+29.8% | Added |
| Northern Trust Corp | 240,986 | $4.16M | 0.00% | −2,017−0.8% | Reduced |
| Bank of New York Mellon Corp | 195,911 | $3.38M | 0.00% | +404+0.2% | Added |
| Two Sigma Investments, LP | 169,231 | $2.92M | 0.00% | +60,462+55.6% | Added |
| Qube Research & Technologies Ltd | 161,975 | $2.79M | 0.00% | +16,157+11.1% | Added |
| Uniplan Investment Counsel, Inc. | 161,242 | $2.78M | 0.27% | −26,986−14.3% | Reduced |
| Morgan Stanley | 144,063 | $2.49M | 0.00% | −8,360−5.5% | Reduced |
| North Star Investment Management Corp. | 122,000 | $2.10M | 0.14% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 114,533 | $1.98M | 0.00% | −109,520−48.9% | Reduced |
| Trexquant Investment LP | 88,869 | $1.53M | 0.02% | −22,612−20.3% | Reduced |
| Lazard Asset Management LLC | 80,885 | $1.40M | 0.00% | +14,624+22.1% | Added |
| Allspring Global Investments Holdings, LLC | 74,403 | $1.28M | 0.00% | +74,403 | New |
| Nuveen, LLC | 72,818 | $1.26M | 0.00% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 67,800 | $1.17M | 0.00% | −10,700−13.6% | Reduced |
| UBS Group AG | 66,804 | $1.15M | 0.00% | +29,850+80.8% | Added |
| Los Angeles Capital Management LLC | 65,685 | $1.13M | 0.00% | +1,875+2.9% | Added |
| Jacobs Levy Equity Management, Inc | 64,164 | $1.11M | 0.00% | −503−0.8% | Reduced |
| First Trust Advisors LP | 63,519 | $1.10M | 0.00% | +63,519 | New |
| Panagora Asset Management Inc | 61,226 | $1.06M | 0.00% | +27,437+81.2% | Added |
| Charles Schwab Investment Management Inc | 61,103 | $1.05M | 0.00% | +173+0.3% | Added |
| CWM Advisors, LLC | 60,695 | $1.05M | 0.10% | +9,191+17.8% | Added |
| Bank of America Corp | 59,416 | $1.02M | 0.00% | +12,679+27.1% | Added |
| HSBC Holdings PLC | 54,069 | $934.3K | 0.00% | +24,043+80.1% | Added |
| Hennion & Walsh Asset Management, Inc. | 49,938 | $861.4K | 0.03% | −1,740−3.4% | Reduced |
| American Century Companies Inc | 43,407 | $748.8K | 0.00% | +4,182+10.7% | Added |
| AQR Capital Management LLC | 43,280 | $746.6K | 0.00% | +11,226+35.0% | Added |
| Barclays PLC | 42,207 | $728.1K | 0.00% | −1,690−3.8% | Reduced |
| D. E. Shaw & Co., Inc. | 40,542 | $699.4K | 0.00% | +26,043+179.6% | Added |
| Jane Street Group, LLC | 40,100 | $691.7K | 0.00% | +40,100 | New |
| Keebeck Wealth Management, LLC | 40,000 | $690.0K | 0.08% | 00.0% | Unchanged |
| Rhumbline Advisers | 39,963 | $689.4K | 0.00% | +5,158+14.8% | Added |
| Walleye Capital LLC | 35,856 | $618.5K | 0.01% | +5,512+18.2% | Added |
| Prudential Financial Inc | 35,540 | $613.1K | 0.00% | −14,100−28.4% | Reduced |
| Marshall Wace, LLP | 34,084 | $588.0K | 0.00% | +1,009+3.1% | Added |
| Cubist Systematic Strategies, LLC | 33,983 | $586.2K | 0.01% | −4,981−12.8% | Reduced |
| Engineers Gate Manager LP | 33,252 | $573.6K | 0.01% | +11,294+51.4% | Added |
| Martingale Asset Management L P | 32,876 | $567.1K | 0.01% | +7,934+31.8% | Added |
| Invesco Ltd. | 32,784 | $565.5K | 0.00% | −888−2.6% | Reduced |
| State Board of Administration of Florida Retirement System | 31,714 | $547.1K | 0.00% | +11,551+57.3% | Added |
| Campbell & CO Investment Adviser LLC | 29,534 | $509.5K | 0.04% | +29,534 | New |
| Millennium Management LLC | 28,293 | $488.1K | 0.00% | −11,435−28.8% | Reduced |
| Gsa Capital Partners LLP | 26,948 | $465.0K | 0.04% | +26,948 | New |
| Significant Wealth Partners LLC | 25,969 | $448.0K | 0.22% | +2,797+12.1% | Added |
| Man Group plc | 25,374 | $437.7K | 0.00% | −961−3.6% | Reduced |
| Stifel Financial Corp | 23,917 | $412.6K | 0.00% | +726+3.1% | Added |
| State of Wyoming | 23,371 | $403.1K | 0.05% | −1,645−6.6% | Reduced |
| Citadel Advisors LLC | 23,357 | $402.9K | 0.00% | −42,060−64.3% | Reduced |
| ExodusPoint Capital Management, LP | 23,350 | $402.8K | 0.01% | +23,350 | New |
| Wells Fargo & Company | 22,889 | $394.8K | 0.00% | +2,846+14.2% | Added |
| Victory Capital Management Inc | 22,888 | $394.8K | 0.00% | +22,888 | New |
| Petrus Trust Company, LTA | 21,667 | $373.8K | 0.04% | +21,667 | New |
| Wiley Bros.-Aintree Capital, LLC | 21,600 | $372.6K | 0.00% | +1,600+8.0% | Added |
| Creative Planning | 20,785 | $358.5K | 0.00% | +20,785 | New |
| Alliancebernstein L.P. | 20,660 | $356.4K | 0.00% | +2,100+11.3% | Added |
| FMR LLC | 19,829 | $342.0K | 0.00% | +2,429+14.0% | Added |
| R Squared Ltd | 19,227 | $331.7K | 0.14% | +1,830+10.5% | Added |
| Ameriprise Financial Inc | 19,097 | $329.4K | 0.00% | −8,624−31.1% | Reduced |
| BNP Paribas Arbitrage, SA | 18,401 | $317.4K | 0.00% | +13,529+277.7% | Added |
| Atom Investors LP | 17,827 | $307.5K | 0.02% | +17,827 | New |
| Hillsdale Investment Management Inc. | 16,500 | $284.6K | 0.01% | 00.0% | Unchanged |
| Cerity Partners LLC | 13,454 | $232.1K | 0.00% | +1,388+11.5% | Added |
| Deutsche Bank AG | 13,392 | $231.0K | 0.00% | 00.0% | Unchanged |
| Occudo Quantitative Strategies LP | 12,778 | $220.4K | 0.03% | +1,563+13.9% | Added |
| Grantham, Mayo, Van Otterloo & Co. LLC | 12,307 | $212.3K | 0.00% | 00.0% | Unchanged |
| Truvestments Capital LLC | 11,751 | $202.7K | 0.04% | −3,628−23.6% | Reduced |
| MetLife Investment Management | 11,696 | $201.8K | 0.00% | 00.0% | Unchanged |
| Algert Global LLC | 11,000 | $189.8K | 0.00% | +11,000 | New |
| Raymond James Financial Inc | 10,843 | $187.0K | 0.00% | +2,011+22.8% | Added |
| Quantinno Capital Management LP | 10,785 | $186.0K | 0.00% | +10,785 | New |
| Price T Rowe Associates Inc | 10,744 | $186.0K | 0.00% | +542+5.3% | Added |
| Jump Financial, LLC | 10,700 | $184.6K | 0.00% | +10,700 | New |
| Public Employees Retirement System of Ohio | 10,673 | $184.1K | 0.00% | 00.0% | Unchanged |
| Longboard Asset Management, LP | 10,350 | $178.5K | 0.29% | +10,350 | New |
| Virtus Investment Advisers, Inc. | 9,866 | $170.2K | 0.05% | −401−3.9% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 9,553 | $164.8K | 0.00% | −1,601−14.4% | Reduced |
| Quest Partners LLC | 8,951 | $154.4K | 0.01% | −2,391−21.1% | Reduced |
| New York State Common Retirement Fund | 7,450 | $128.5K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 6,876 | $118.6K | 0.00% | −21−0.3% | Reduced |
| New Age Alpha Advisors, LLC | 6,570 | $113.3K | 0.00% | −4,586−41.1% | Reduced |
| Virtus ETF Advisers LLC | 6,350 | $109.5K | 0.06% | +6,350 | New |
| Police & Firemen's Retirement System of New Jersey | 6,203 | $107.0K | 0.00% | +1,899+44.1% | Added |
| Russell Investments Group, Ltd. | 4,551 | $78.5K | 0.00% | +1,938+74.2% | Added |
| Legal & General Group Plc | 3,954 | $68.2K | 0.00% | −1,711−30.2% | Reduced |
| CWM, LLC | 3,310 | $57.0K | 0.00% | +1,023+44.7% | Added |
| Advisor Group Holdings, Inc. | 3,056 | $55.5K | 0.00% | −561−15.5% | Reduced |
| Group One Trading, L.P. | 2,725 | $47.0K | 0.00% | +2,725 | New |
| SBI Securities Co., Ltd. | 2,316 | $40.0K | 0.00% | −200−7.9% | Reduced |
| McIlrath & Eck, LLC | 2,166 | $37.4K | 0.00% | +715+49.3% | Added |
| Ameritas Investment Partners, Inc. | 2,080 | $35.9K | 0.00% | 00.0% | Unchanged |
| Larson Financial Group LLC | 2,000 | $34.5K | 0.00% | 00.0% | Unchanged |