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 |
|---|---|---|---|---|---|
| Prudential Financial Inc | 35,540 | $613.1K | 0.00% | −14,100−28.4% | Reduced |
| Walleye Capital LLC | 35,856 | $618.5K | 0.01% | +5,512+18.2% | Added |
| Rhumbline Advisers | 39,963 | $689.4K | 0.00% | +5,158+14.8% | Added |
| Keebeck Wealth Management, LLC | 40,000 | $690.0K | 0.08% | 00.0% | Unchanged |
| Jane Street Group, LLC | 40,100 | $691.7K | 0.00% | +40,100 | New |
| D. E. Shaw & Co., Inc. | 40,542 | $699.4K | 0.00% | +26,043+179.6% | Added |
| Barclays PLC | 42,207 | $728.1K | 0.00% | −1,690−3.8% | Reduced |
| AQR Capital Management LLC | 43,280 | $746.6K | 0.00% | +11,226+35.0% | Added |
| American Century Companies Inc | 43,407 | $748.8K | 0.00% | +4,182+10.7% | Added |
| Hennion & Walsh Asset Management, Inc. | 49,938 | $861.4K | 0.03% | −1,740−3.4% | Reduced |
| HSBC Holdings PLC | 54,069 | $934.3K | 0.00% | +24,043+80.1% | Added |
| Bank of America Corp | 59,416 | $1.02M | 0.00% | +12,679+27.1% | Added |
| CWM Advisors, LLC | 60,695 | $1.05M | 0.10% | +9,191+17.8% | Added |
| Charles Schwab Investment Management Inc | 61,103 | $1.05M | 0.00% | +173+0.3% | Added |
| Panagora Asset Management Inc | 61,226 | $1.06M | 0.00% | +27,437+81.2% | Added |
| First Trust Advisors LP | 63,519 | $1.10M | 0.00% | +63,519 | New |
| Jacobs Levy Equity Management, Inc | 64,164 | $1.11M | 0.00% | −503−0.8% | Reduced |
| Los Angeles Capital Management LLC | 65,685 | $1.13M | 0.00% | +1,875+2.9% | Added |
| UBS Group AG | 66,804 | $1.15M | 0.00% | +29,850+80.8% | Added |
| Two Sigma Advisers, LP | 67,800 | $1.17M | 0.00% | −10,700−13.6% | Reduced |
| Nuveen, LLC | 72,818 | $1.26M | 0.00% | 00.0% | Unchanged |
| Allspring Global Investments Holdings, LLC | 74,403 | $1.28M | 0.00% | +74,403 | New |
| Lazard Asset Management LLC | 80,885 | $1.40M | 0.00% | +14,624+22.1% | Added |
| Trexquant Investment LP | 88,869 | $1.53M | 0.02% | −22,612−20.3% | Reduced |
| JPMorgan Chase & Co | 114,533 | $1.98M | 0.00% | −109,520−48.9% | Reduced |
| North Star Investment Management Corp. | 122,000 | $2.10M | 0.14% | 00.0% | Unchanged |
| Morgan Stanley | 144,063 | $2.49M | 0.00% | −8,360−5.5% | Reduced |
| Uniplan Investment Counsel, Inc. | 161,242 | $2.78M | 0.27% | −26,986−14.3% | Reduced |
| Qube Research & Technologies Ltd | 161,975 | $2.79M | 0.00% | +16,157+11.1% | Added |
| Two Sigma Investments, LP | 169,231 | $2.92M | 0.00% | +60,462+55.6% | Added |
| Bank of New York Mellon Corp | 195,911 | $3.38M | 0.00% | +404+0.2% | Added |
| Northern Trust Corp | 240,986 | $4.16M | 0.00% | −2,017−0.8% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 258,284 | $4.46M | 0.01% | +59,306+29.8% | Added |
| CSM Advisors, LLC | 334,345 | $5.77M | 0.16% | −14,840−4.2% | Reduced |
| Goldman Sachs Group Inc | 395,900 | $6.83M | 0.00% | −133,986−25.3% | Reduced |
| HighTower Advisors, LLC | 408,011 | $7.04M | 0.01% | −44,798−9.9% | Reduced |
| Acadian Asset Management LLC | 428,060 | $7.38M | 0.01% | +38,051+9.8% | Added |
| State Street Corp | 457,428 | $7.89M | 0.00% | +12,251+2.8% | Added |
| Geode Capital Management, LLC | 601,226 | $10.4M | 0.00% | +82,899+16.0% | Added |
| Dimensional Fund Advisors LP | 719,050 | $12.4M | 0.00% | +8,160+1.1% | Added |
| Vanguard Group Inc | 1,154,631 | $19.9M | 0.00% | +6,095+0.5% | Added |
| Renaissance Technologies LLC | 1,172,550 | $20.2M | 0.03% | +115,900+11.0% | Added |
| BlackRock, Inc. | 1,935,262 | $33.4M | 0.00% | +212,388+12.3% | Added |
| Prelude Capital Management, LLC | 0 | $0 | 0.00% | −148,185−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −27,103−100.0% | Sold out |
| Segall Bryant & Hamill, LLC | 0 | $0 | 0.00% | −25,806−100.0% | Sold out |
| UBS Asset Management Americas Inc | 0 | $0 | 0.00% | −22,229−100.0% | Sold out |
| Magnetar Financial LLC | 0 | $0 | 0.00% | −18,480−100.0% | Sold out |
| Financial Advocates Investment Management | 0 | $0 | 0.00% | −15,867−100.0% | Sold out |
| Winton Group Ltd | 0 | $0 | 0.00% | −14,213−100.0% | Sold out |
| Intech Investment Management LLC | 0 | $0 | 0.00% | −12,516−100.0% | Sold out |
| Caption Management, LLC | 0 | $0 | 0.00% | −2,532−100.0% | Sold out |
| Meeder Asset Management Inc | 0 | $0 | 0.00% | −595−100.0% | Sold out |
| Skopos Labs, Inc. | 0 | $0 | 0.00% | −74−100.0% | Sold out |
| Comerica Bank | 0 | $0 | 0.00% | −2−100.0% | Sold out |