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, Q1 2026
Institutional positions in Spok Holdings, Inc as of Mar 31, 2026. 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
- 139
- +6 vs. Q4 2025
- Shares held
- 10.5M
- +656.5K (+6.7%) vs. Q4 2025
- Total value
- $114.4M
- −$15.3M (−11.8%) vs. Q4 2025
- New holders
- 25
- 44 more added
- Sold out
- 19
- 53 more reduced
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Spok Holdings, Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 1,676,227 | $18.3M | 0.00% | −123,322−6.9% | Reduced |
| Renaissance Technologies LLC | 1,261,579 | $13.8M | 0.02% | +15,000+1.2% | Added |
| Vanguard Capital Management LLC | 859,530 | $9.37M | 0.00% | +859,530 | New |
| Dimensional Fund Advisors LP | 715,869 | $7.80M | 0.00% | +12,043+1.7% | Added |
| Geode Capital Management, LLC | 545,718 | $5.95M | 0.00% | −52,834−8.8% | Reduced |
| State Street Corp | 461,790 | $5.03M | 0.00% | +14,871+3.3% | Added |
| HighTower Advisors, LLC | 381,815 | $4.16M | 0.00% | −560−0.1% | Reduced |
| Vanguard Portfolio Management LLC | 265,028 | $2.89M | 0.00% | +265,028 | New |
| Goldman Sachs Group Inc | 219,581 | $2.39M | 0.00% | −142,890−39.4% | Reduced |
| Bank of New York Mellon Corp | 217,803 | $2.37M | 0.00% | +4,987+2.3% | Added |
| Northern Trust Corp | 216,543 | $2.36M | 0.00% | −551−0.3% | Reduced |
| CSM Advisors, LLC | 213,130 | $2.32M | 0.06% | −49,815−18.9% | Reduced |
| Uniplan Investment Counsel, Inc. | 209,602 | $2.28M | 0.23% | +48,605+30.2% | Added |
| Qube Research & Technologies Ltd | 172,057 | $1.88M | 0.00% | −6,035−3.4% | Reduced |
| Morgan Stanley | 159,826 | $1.74M | 0.00% | −17,867−10.1% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 144,851 | $1.58M | 0.00% | −52,014−26.4% | Reduced |
| Vanguard Fiduciary Trust Co | 129,248 | $1.41M | 0.00% | +129,248 | New |
| Trexquant Investment LP | 128,856 | $1.40M | 0.01% | −41,797−24.5% | Reduced |
| North Star Investment Management Corp. | 122,000 | $1.33M | 0.08% | 00.0% | Unchanged |
| Jacobs Levy Equity Management, Inc | 116,810 | $1.27M | 0.01% | −2,157−1.8% | Reduced |
| Marshall Wace, LLP | 112,789 | $1.23M | 0.00% | +112,789 | New |
| United Capital Financial Advisers, LLC | 104,723 | $1.14M | 0.01% | +104,723 | New |
| Point72 Asset Management, L.P. | 89,627 | $976.9K | 0.00% | +70,902+378.6% | Added |
| D. E. Shaw & Co., Inc. | 89,451 | $975.0K | 0.00% | +18,823+26.7% | Added |
| Jane Street Group, LLC | 86,524 | $943.1K | 0.00% | +72,760+528.6% | Added |
| Gsa Capital Partners LLP | 85,824 | $935.0K | 0.06% | +45,796+114.4% | Added |
| Panagora Asset Management Inc | 78,295 | $853.4K | 0.00% | −14,790−15.9% | Reduced |
| Fidelis Capital Partners, LLC | 75,001 | $817.5K | 0.06% | +75,001 | New |
| Nuveen, LLC | 73,336 | $799.4K | 0.00% | +518+0.7% | Added |
| JPMorgan Chase & Co | 69,693 | $783.3K | 0.00% | −22,130−24.1% | Reduced |
| Numerai GP LLC | 69,016 | $752.3K | 0.08% | +69,016 | New |
| First Trust Advisors LP | 65,498 | $713.9K | 0.00% | +379+0.6% | Added |
| Engineers Gate Manager LP | 64,068 | $698.3K | 0.01% | +27,712+76.2% | Added |
| Charles Schwab Investment Management Inc | 56,035 | $610.8K | 0.00% | −4,954−8.1% | Reduced |
| Campbell & CO Investment Adviser LLC | 50,869 | $554.5K | 0.03% | +1,831+3.7% | Added |
| Keebeck Wealth Management, LLC | 50,000 | $545.0K | 0.06% | +10,000+25.0% | Added |
| Man Group plc | 48,325 | $526.7K | 0.00% | +21,886+82.8% | Added |
| American Century Companies Inc | 43,368 | $472.7K | 0.00% | −315−0.7% | Reduced |
| AQR Capital Management LLC | 43,132 | $470.1K | 0.00% | +26,766+163.5% | Added |
| Victory Capital Management Inc | 42,816 | $466.7K | 0.00% | +5,779+15.6% | Added |
| HSBC Holdings PLC | 41,499 | $458.4K | 0.00% | −18,832−31.2% | Reduced |
| Dynamic Technology Lab Private Ltd | 37,544 | $409.2K | 0.07% | +37,544 | New |
| Millennium Management LLC | 37,155 | $405.0K | 0.00% | −88,653−70.5% | Reduced |
| Alliancebernstein L.P. | 28,160 | $371.4K | 0.00% | +4,000+16.6% | Added |
| Rhumbline Advisers | 31,194 | $340.0K | 0.00% | −340−1.1% | Reduced |
| Invesco Ltd. | 30,475 | $332.2K | 0.00% | −455−1.5% | Reduced |
| UBS Group AG | 29,018 | $316.3K | 0.00% | −27,937−49.1% | Reduced |
| Bridgeway Capital Management, LLC | 26,600 | $289.9K | 0.01% | +26,600 | New |
| Bank of America Corp | 26,528 | $289.2K | 0.00% | −9,959−27.3% | Reduced |
| Quantinno Capital Management LP | 26,150 | $285.0K | 0.00% | −66,576−71.8% | Reduced |
| Martingale Asset Management L P | 23,025 | $251.0K | 0.01% | −669−2.8% | Reduced |
| State of Wisconsin Investment Board | 20,300 | $221.3K | 0.00% | +9,200+82.9% | Added |
| Two Sigma Investments, LP | 19,900 | $216.9K | 0.00% | −42,687−68.2% | Reduced |
| Cambria Investment Management, L.P. | 19,744 | $215.2K | 0.01% | +7,590+62.4% | Added |
| Wells Fargo & Company | 18,991 | $207.0K | 0.00% | −10,643−35.9% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 18,707 | $203.9K | 0.01% | −139−0.7% | Reduced |
| Occudo Quantitative Strategies LP | 18,948 | $202.6K | 0.01% | +5,416+40.0% | Added |
| Deutsche Bank AG | 17,974 | $195.9K | 0.00% | +4,820+36.6% | Added |
| Citadel Advisors LLC | 17,775 | $193.7K | 0.00% | −31,917−64.2% | Reduced |
| Aquatic Capital Management LLC | 17,342 | $189.0K | 0.01% | +12,376+249.2% | Added |
| Ameriprise Financial Inc | 16,881 | $184.0K | 0.00% | −3,128−15.6% | Reduced |
| Significant Wealth Partners LLC | 16,683 | $181.8K | 0.22% | +1,885+12.7% | Added |
| Barclays PLC | 15,320 | $167.0K | 0.00% | −29,200−65.6% | Reduced |
| Empowered Funds, LLC | 15,203 | $165.7K | 0.00% | +15,203 | New |
| Canada Pension Plan Investment Board | 15,200 | $165.7K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 15,029 | $163.8K | 0.00% | −111,953−88.2% | Reduced |
| Price T Rowe Associates Inc | 14,791 | $162.0K | 0.00% | +4,047+37.7% | Added |
| EntryPoint Capital, LLC | 14,850 | $161.9K | 0.05% | +14,850 | New |
| Magnetar Financial LLC | 13,904 | $151.6K | 0.00% | −7,577−35.3% | Reduced |
| Susquehanna International Group, LLP | 13,064 | $142.4K | 0.00% | +13,064 | New |
| Squarepoint Ops LLC | 12,481 | $136.0K | 0.00% | −3,631−22.5% | Reduced |
| Brady Martz Wealth Solutions, LLC | 12,220 | $133.2K | 0.02% | +12,220 | New |
| Buckingham Strategic Partners | 12,111 | $132.0K | 0.00% | +12,111 | New |
| Quadrature Capital Ltd | 11,367 | $123.9K | 0.00% | +11,367 | New |
| Public Employees Retirement System of Ohio | 10,673 | $116.3K | 0.00% | 00.0% | Unchanged |
| Grantham, Mayo, Van Otterloo & Co. LLC | 10,473 | $114.2K | 0.00% | −1,834−14.9% | Reduced |
| Axq Capital, LP | 10,283 | $112.1K | 0.01% | +10,283 | New |
| Redhawk Wealth Advisors, Inc. | 10,134 | $110.5K | 0.01% | +10,134 | New |
| Oxford Asset Management LLP | 10,020 | $109.2K | 0.04% | −332−3.2% | Reduced |
| State of Wyoming | 10,013 | $109.1K | 0.01% | +6,167+160.3% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 9,683 | $105.5K | 0.00% | +238+2.5% | Added |
| Vanguard Global Advisers, LLC | 8,987 | $98.0K | 0.00% | +8,987 | New |
| Russell Investments Group, Ltd. | 7,851 | $85.6K | 0.00% | +4,113+110.0% | Added |
| Virtus ETF Advisers LLC | 7,125 | $77.7K | 0.04% | −7,538−51.4% | Reduced |
| Truvestments Capital LLC | 7,014 | $76.5K | 0.01% | −1,814−20.5% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 6,597 | $71.9K | 0.00% | 00.0% | Unchanged |
| MetLife Investment Management | 6,472 | $70.5K | 0.00% | −4,579−41.4% | Reduced |
| CWM, LLC | 5,874 | $64.0K | 0.00% | +5,017+585.4% | Added |
| New Age Alpha Advisors, LLC | 5,855 | $63.8K | 0.00% | 00.0% | Unchanged |
| Triumph Capital Management | 5,501 | $60.0K | 0.01% | +700+14.6% | Added |
| BNP Paribas Arbitrage, SA | 4,389 | $47.8K | 0.00% | −297−6.3% | Reduced |
| Tower Research Capital LLC (TRC) | 4,168 | $45.4K | 0.00% | +1,466+54.3% | Added |
| Legal & General Group Plc | 3,954 | $43.1K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 2,744 | $29.9K | 0.00% | +2,194+398.9% | Added |
| Great West Life Assurance Co | 2,565 | $28.0K | 0.00% | +100+4.1% | Added |
| Ameritas Investment Partners, Inc. | 2,080 | $22.7K | 0.00% | 00.0% | Unchanged |
| Larson Financial Group LLC | 2,000 | $21.8K | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 1,859 | $20.6K | 0.00% | +112+6.4% | Added |
| Citigroup Inc | 1,627 | $17.7K | 0.00% | −5,405−76.9% | Reduced |
| California State Teachers Retirement System | 1,102 | $12.0K | 0.00% | −150−12.0% | Reduced |