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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 1,799,549 | $23.7M | 0.00% | −135,713−7.0% | Reduced |
| Renaissance Technologies LLC | 1,246,579 | $16.4M | 0.03% | +74,029+6.3% | Added |
| Vanguard Group Inc | 1,229,078 | $16.2M | 0.00% | +74,447+6.4% | Added |
| Dimensional Fund Advisors LP | 703,826 | $9.28M | 0.00% | −15,224−2.1% | Reduced |
| Geode Capital Management, LLC | 598,552 | $7.90M | 0.00% | −2,674−0.4% | Reduced |
| State Street Corp | 446,919 | $5.89M | 0.00% | −10,509−2.3% | Reduced |
| HighTower Advisors, LLC | 382,375 | $5.04M | 0.01% | −25,636−6.3% | Reduced |
| Goldman Sachs Group Inc | 362,471 | $4.78M | 0.00% | −33,429−8.4% | Reduced |
| Acadian Asset Management LLC | 322,043 | $4.25M | 0.01% | −106,017−24.8% | Reduced |
| CSM Advisors, LLC | 262,945 | $3.47M | 0.09% | −71,400−21.4% | Reduced |
| Northern Trust Corp | 217,094 | $2.86M | 0.00% | −23,892−9.9% | Reduced |
| Bank of New York Mellon Corp | 212,816 | $2.81M | 0.00% | +16,905+8.6% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 196,865 | $2.60M | 0.01% | −61,419−23.8% | Reduced |
| Qube Research & Technologies Ltd | 178,092 | $2.35M | 0.00% | +16,117+10.0% | Added |
| Morgan Stanley | 177,693 | $2.34M | 0.00% | +33,630+23.3% | Added |
| Trexquant Investment LP | 170,653 | $2.25M | 0.02% | +81,784+92.0% | Added |
| Uniplan Investment Counsel, Inc. | 160,997 | $2.12M | 0.21% | −245−0.2% | Reduced |
| FMR LLC | 126,982 | $1.67M | 0.00% | +107,153+540.4% | Added |
| Millennium Management LLC | 125,808 | $1.66M | 0.00% | +97,515+344.7% | Added |
| North Star Investment Management Corp. | 122,000 | $1.61M | 0.10% | 00.0% | Unchanged |
| Jacobs Levy Equity Management, Inc | 118,967 | $1.57M | 0.01% | +54,803+85.4% | Added |
| Los Angeles Capital Management LLC | 102,021 | $1.41M | 0.00% | +36,336+55.3% | Added |
| Panagora Asset Management Inc | 93,085 | $1.23M | 0.00% | +31,859+52.0% | Added |
| Quantinno Capital Management LP | 92,726 | $1.22M | 0.00% | +81,941+759.8% | Added |
| JPMorgan Chase & Co | 91,823 | $1.21M | 0.00% | −22,710−19.8% | Reduced |
| Nuveen, LLC | 72,818 | $960.5K | 0.00% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 70,628 | $931.6K | 0.00% | +30,086+74.2% | Added |
| First Trust Advisors LP | 65,119 | $858.9K | 0.00% | +1,600+2.5% | Added |
| Two Sigma Investments, LP | 62,587 | $825.5K | 0.00% | −106,644−63.0% | Reduced |
| Charles Schwab Investment Management Inc | 60,989 | $804.4K | 0.00% | −114−0.2% | Reduced |
| HSBC Holdings PLC | 60,331 | $797.0K | 0.00% | +6,262+11.6% | Added |
| UBS Group AG | 56,955 | $751.2K | 0.00% | −9,849−14.7% | Reduced |
| Citadel Advisors LLC | 49,692 | $655.4K | 0.00% | +26,335+112.7% | Added |
| Campbell & CO Investment Adviser LLC | 49,038 | $646.8K | 0.03% | +19,504+66.0% | Added |
| Barclays PLC | 44,520 | $587.2K | 0.00% | +2,313+5.5% | Added |
| American Century Companies Inc | 43,683 | $576.2K | 0.00% | +276+0.6% | Added |
| Two Sigma Advisers, LP | 42,072 | $554.9K | 0.00% | −25,728−37.9% | Reduced |
| Gsa Capital Partners LLP | 40,028 | $528.0K | 0.05% | +13,080+48.5% | Added |
| Keebeck Wealth Management, LLC | 40,000 | $527.6K | 0.06% | 00.0% | Unchanged |
| Victory Capital Management Inc | 37,037 | $488.5K | 0.00% | +14,149+61.8% | Added |
| Bank of America Corp | 36,487 | $481.3K | 0.00% | −22,929−38.6% | Reduced |
| Engineers Gate Manager LP | 36,356 | $479.5K | 0.01% | +3,104+9.3% | Added |
| Rhumbline Advisers | 31,534 | $415.9K | 0.00% | −8,429−21.1% | Reduced |
| Invesco Ltd. | 30,930 | $408.0K | 0.00% | −1,854−5.7% | Reduced |
| Wells Fargo & Company | 29,634 | $390.9K | 0.00% | +6,745+29.5% | Added |
| Man Group plc | 26,439 | $348.7K | 0.00% | +1,065+4.2% | Added |
| Alliancebernstein L.P. | 24,160 | $318.7K | 0.00% | +3,500+16.9% | Added |
| Martingale Asset Management L P | 23,694 | $312.5K | 0.01% | −9,182−27.9% | Reduced |
| State Board of Administration of Florida Retirement System | 22,698 | $299.4K | 0.00% | −9,016−28.4% | Reduced |
| Boothbay Fund Management, LLC | 22,231 | $293.2K | 0.01% | +22,231 | New |
| Magnetar Financial LLC | 21,481 | $283.3K | 0.00% | +21,481 | New |
| Ameriprise Financial Inc | 20,009 | $263.9K | 0.00% | +912+4.8% | Added |
| Brevan Howard Capital Management LP | 19,185 | $253.1K | 0.00% | +19,185 | New |
| Hennion & Walsh Asset Management, Inc. | 18,846 | $248.6K | 0.01% | −31,092−62.3% | Reduced |
| Point72 Asset Management, L.P. | 18,725 | $247.0K | 0.00% | +18,725 | New |
| AQR Capital Management LLC | 16,366 | $215.9K | 0.00% | −26,914−62.2% | Reduced |
| Squarepoint Ops LLC | 16,112 | $212.5K | 0.00% | +16,112 | New |
| Canada Pension Plan Investment Board | 15,200 | $200.5K | 0.00% | +15,200 | New |
| Significant Wealth Partners LLC | 14,798 | $195.2K | 0.22% | −11,171−43.0% | Reduced |
| Virtus ETF Advisers LLC | 14,663 | $193.4K | 0.09% | +8,313+130.9% | Added |
| Hillsdale Investment Management Inc. | 14,100 | $186.0K | 0.01% | −2,400−14.5% | Reduced |
| Jane Street Group, LLC | 13,764 | $181.5K | 0.00% | −26,336−65.7% | Reduced |
| Occudo Quantitative Strategies LP | 13,532 | $178.5K | 0.01% | +754+5.9% | Added |
| Deutsche Bank AG | 13,154 | $173.5K | 0.00% | −238−1.8% | Reduced |
| Grantham, Mayo, Van Otterloo & Co. LLC | 12,307 | $162.3K | 0.00% | 00.0% | Unchanged |
| Cambria Investment Management, L.P. | 12,154 | $160.3K | 0.01% | +12,154 | New |
| Algert Global LLC | 12,080 | $159.3K | 0.00% | +1,080+9.8% | Added |
| Carlson Financial, Inc. | 11,233 | $148.2K | 0.09% | +11,233 | New |
| State of Wisconsin Investment Board | 11,100 | $146.4K | 0.00% | +11,100 | New |
| MetLife Investment Management | 11,051 | $145.8K | 0.00% | −645−5.5% | Reduced |
| Price T Rowe Associates Inc | 10,744 | $142.0K | 0.00% | 00.0% | Unchanged |
| Public Employees Retirement System of Ohio | 10,673 | $140.8K | 0.00% | 00.0% | Unchanged |
| Oxford Asset Management LLP | 10,352 | $136.5K | 0.05% | +10,352 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 9,445 | $124.6K | 0.00% | −108−1.1% | Reduced |
| Quest Partners LLC | 9,168 | $120.9K | 0.01% | +217+2.4% | Added |
| Truvestments Capital LLC | 8,828 | $116.4K | 0.02% | −2,923−24.9% | Reduced |
| Citigroup Inc | 7,032 | $92.8K | 0.00% | +156+2.3% | Added |
| Versant Capital Management, Inc | 6,650 | $87.7K | 0.01% | +6,650 | New |
| Police & Firemen's Retirement System of New Jersey | 6,597 | $87.0K | 0.00% | +394+6.4% | Added |
| New Age Alpha Advisors, LLC | 5,855 | $77.2K | 0.00% | −715−10.9% | Reduced |
| Aquatic Capital Management LLC | 4,966 | $65.5K | 0.00% | +4,966 | New |
| Triumph Capital Management | 4,801 | $63.3K | 0.01% | +4,801 | New |
| BNP Paribas Arbitrage, SA | 4,686 | $61.8K | 0.00% | −13,715−74.5% | Reduced |
| Legal & General Group Plc | 3,954 | $52.2K | 0.00% | 00.0% | Unchanged |
| State of Wyoming | 3,846 | $50.7K | 0.01% | −19,525−83.5% | Reduced |
| Russell Investments Group, Ltd. | 3,738 | $49.3K | 0.00% | −813−17.9% | Reduced |
| Royal Bank of Canada | 3,100 | $40.0K | 0.00% | +2,004+182.8% | Added |
| Tower Research Capital LLC (TRC) | 2,702 | $35.6K | 0.00% | +1,607+146.8% | Added |
| Great West Life Assurance Co | 2,465 | $33.0K | 0.00% | +1,013+69.8% | Added |
| Ameritas Investment Partners, Inc. | 2,080 | $27.4K | 0.00% | 00.0% | Unchanged |
| Larson Financial Group LLC | 2,000 | $26.4K | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 1,839 | $24.3K | 0.00% | +1,207+191.0% | Added |
| SBI Securities Co., Ltd. | 1,747 | $23.0K | 0.00% | −569−24.6% | Reduced |
| Kestra Advisory Services, LLC | 1,738 | $22.9K | 0.00% | +1,738 | New |
| McIlrath & Eck, LLC | 1,451 | $19.1K | 0.00% | −715−33.0% | Reduced |
| California State Teachers Retirement System | 1,252 | $16.5K | 0.00% | −17−1.3% | Reduced |
| Sterling Capital Management LLC | 1,174 | $15.5K | 0.00% | −232−16.5% | Reduced |
| CWM, LLC | 857 | $11.0K | 0.00% | −2,453−74.1% | Reduced |
| Nisa Investment Advisors, LLC | 792 | $10.4K | 0.00% | +746+1,621.7% | Added |
| GWM Advisors LLC | 643 | $8.48K | 0.00% | +194+43.2% | Added |