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 |
|---|---|---|---|---|---|
| AQR Capital Management LLC | 43,132 | $470.1K | 0.00% | +26,766+163.5% | Added |
| American Century Companies Inc | 43,368 | $472.7K | 0.00% | −315−0.7% | Reduced |
| Man Group plc | 48,325 | $526.7K | 0.00% | +21,886+82.8% | Added |
| Keebeck Wealth Management, LLC | 50,000 | $545.0K | 0.06% | +10,000+25.0% | Added |
| Campbell & CO Investment Adviser LLC | 50,869 | $554.5K | 0.03% | +1,831+3.7% | Added |
| Charles Schwab Investment Management Inc | 56,035 | $610.8K | 0.00% | −4,954−8.1% | Reduced |
| Engineers Gate Manager LP | 64,068 | $698.3K | 0.01% | +27,712+76.2% | Added |
| First Trust Advisors LP | 65,498 | $713.9K | 0.00% | +379+0.6% | Added |
| Numerai GP LLC | 69,016 | $752.3K | 0.08% | +69,016 | New |
| JPMorgan Chase & Co | 69,693 | $783.3K | 0.00% | −22,130−24.1% | Reduced |
| Nuveen, LLC | 73,336 | $799.4K | 0.00% | +518+0.7% | Added |
| Fidelis Capital Partners, LLC | 75,001 | $817.5K | 0.06% | +75,001 | New |
| Panagora Asset Management Inc | 78,295 | $853.4K | 0.00% | −14,790−15.9% | Reduced |
| Gsa Capital Partners LLP | 85,824 | $935.0K | 0.06% | +45,796+114.4% | Added |
| Jane Street Group, LLC | 86,524 | $943.1K | 0.00% | +72,760+528.6% | Added |
| D. E. Shaw & Co., Inc. | 89,451 | $975.0K | 0.00% | +18,823+26.7% | Added |
| Point72 Asset Management, L.P. | 89,627 | $976.9K | 0.00% | +70,902+378.6% | Added |
| United Capital Financial Advisers, LLC | 104,723 | $1.14M | 0.01% | +104,723 | New |
| Marshall Wace, LLP | 112,789 | $1.23M | 0.00% | +112,789 | New |
| Jacobs Levy Equity Management, Inc | 116,810 | $1.27M | 0.01% | −2,157−1.8% | Reduced |
| North Star Investment Management Corp. | 122,000 | $1.33M | 0.08% | 00.0% | Unchanged |
| Trexquant Investment LP | 128,856 | $1.40M | 0.01% | −41,797−24.5% | Reduced |
| Vanguard Fiduciary Trust Co | 129,248 | $1.41M | 0.00% | +129,248 | New |
| Connor, Clark & Lunn Investment Management Ltd. | 144,851 | $1.58M | 0.00% | −52,014−26.4% | Reduced |
| Morgan Stanley | 159,826 | $1.74M | 0.00% | −17,867−10.1% | Reduced |
| Qube Research & Technologies Ltd | 172,057 | $1.88M | 0.00% | −6,035−3.4% | Reduced |
| Uniplan Investment Counsel, Inc. | 209,602 | $2.28M | 0.23% | +48,605+30.2% | Added |
| CSM Advisors, LLC | 213,130 | $2.32M | 0.06% | −49,815−18.9% | Reduced |
| Northern Trust Corp | 216,543 | $2.36M | 0.00% | −551−0.3% | Reduced |
| Bank of New York Mellon Corp | 217,803 | $2.37M | 0.00% | +4,987+2.3% | Added |
| Goldman Sachs Group Inc | 219,581 | $2.39M | 0.00% | −142,890−39.4% | Reduced |
| Vanguard Portfolio Management LLC | 265,028 | $2.89M | 0.00% | +265,028 | New |
| HighTower Advisors, LLC | 381,815 | $4.16M | 0.00% | −560−0.1% | Reduced |
| State Street Corp | 461,790 | $5.03M | 0.00% | +14,871+3.3% | Added |
| Geode Capital Management, LLC | 545,718 | $5.95M | 0.00% | −52,834−8.8% | Reduced |
| Dimensional Fund Advisors LP | 715,869 | $7.80M | 0.00% | +12,043+1.7% | Added |
| Vanguard Capital Management LLC | 859,530 | $9.37M | 0.00% | +859,530 | New |
| Renaissance Technologies LLC | 1,261,579 | $13.8M | 0.02% | +15,000+1.2% | Added |
| BlackRock, Inc. | 1,676,227 | $18.3M | 0.00% | −123,322−6.9% | Reduced |
| Acadian Asset Management LLC | 0 | $0 | 0.00% | −322,043−100.0% | Sold out |
| Los Angeles Capital Management LLC | 0 | $0 | 0.00% | −102,021−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −42,072−100.0% | Sold out |
| State Board of Administration of Florida Retirement System | 0 | $0 | 0.00% | −22,698−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −22,231−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −19,185−100.0% | Sold out |
| Hillsdale Investment Management Inc. | 0 | $0 | 0.00% | −14,100−100.0% | Sold out |
| Algert Global LLC | 0 | $0 | 0.00% | −12,080−100.0% | Sold out |
| Carlson Financial, Inc. | 0 | $0 | 0.00% | −11,233−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −9,168−100.0% | Sold out |
| Kestra Advisory Services, LLC | 0 | $0 | 0.00% | −1,738−100.0% | Sold out |
| GWM Advisors LLC | 0 | $0 | 0.00% | −643−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −640−100.0% | Sold out |
| Parallel Advisors, LLC | 0 | $0 | 0.00% | −258−100.0% | Sold out |
| Cornerstone Financial Management LLC | 0 | $0 | 0.00% | −105−100.0% | Sold out |
| Zions Bancorporation, National Association | 0 | $0 | 0.00% | −61−100.0% | Sold out |
| SageView Advisory Group, LLC | 0 | $0 | 0.00% | −60−100.0% | Sold out |
| Private Wealth Management Group, LLC | 0 | $0 | 0.00% | −34−100.0% | Sold out |
| Kayne Anderson Rudnick Investment Management LLC | 0 | $0 | 0.00% | −30−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |