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, Q2 2025
Institutional positions in Spok Holdings, Inc as of Jun 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
- 130
- +6 vs. Q1 2025
- Shares held
- 11.0M
- +797.1K (+7.8%) vs. Q1 2025
- Total value
- $194.4M
- +$26.7M (+16.0%) vs. Q1 2025
- New holders
- 24
- 53 more added
- Sold out
- 18
- 34 more reduced
1 institution that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 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, Q2 2025
Shares, value and share of portfolio for each institution holding Spok Holdings, Inc; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 1,722,874 | $30.5M | 0.00% | +180,478+11.7% | Added |
| Vanguard Group Inc | 1,148,536 | $20.3M | 0.00% | +128,225+12.6% | Added |
| Renaissance Technologies LLC | 1,056,650 | $18.7M | 0.02% | +37,200+3.6% | Added |
| Dimensional Fund Advisors LP | 710,890 | $12.6M | 0.00% | +11,327+1.6% | Added |
| Goldman Sachs Group Inc | 529,886 | $9.37M | 0.00% | +8,315+1.6% | Added |
| Geode Capital Management, LLC | 518,327 | $9.17M | 0.00% | +29,957+6.1% | Added |
| HighTower Advisors, LLC | 452,809 | $8.01M | 0.01% | −69,842−13.4% | Reduced |
| State Street Corp | 445,177 | $7.87M | 0.00% | +7,897+1.8% | Added |
| Acadian Asset Management LLC | 390,009 | $6.89M | 0.01% | +13,077+3.5% | Added |
| CSM Advisors, LLC | 349,185 | $6.17M | 0.18% | +349,185 | New |
| Northern Trust Corp | 243,003 | $4.30M | 0.00% | +26,221+12.1% | Added |
| JPMorgan Chase & Co | 224,053 | $3.96M | 0.00% | +24,991+12.6% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 198,978 | $3.52M | 0.01% | +58,416+41.6% | Added |
| Bank of New York Mellon Corp | 195,507 | $3.46M | 0.00% | +5,389+2.8% | Added |
| Uniplan Investment Counsel, Inc. | 188,228 | $3.33M | 0.34% | −17,104−8.3% | Reduced |
| Morgan Stanley | 152,423 | $2.69M | 0.00% | −16,093−9.5% | Reduced |
| Prelude Capital Management, LLC | 148,185 | $2.62M | 0.26% | −4,700−3.1% | Reduced |
| Qube Research & Technologies Ltd | 145,818 | $2.58M | 0.00% | +20,730+16.6% | Added |
| North Star Investment Management Corp. | 122,000 | $2.16M | 0.15% | 00.0% | Unchanged |
| Trexquant Investment LP | 111,481 | $1.97M | 0.02% | −31,865−22.2% | Reduced |
| Two Sigma Investments, LP | 108,769 | $1.92M | 0.00% | +44,939+70.4% | Added |
| Two Sigma Advisers, LP | 78,500 | $1.39M | 0.00% | +12,200+18.4% | Added |
| Nuveen, LLC | 72,818 | $1.29M | 0.00% | −8,527−10.5% | Reduced |
| Lazard Asset Management LLC | 66,261 | $1.17M | 0.00% | +65,484+8,427.8% | Added |
| Citadel Advisors LLC | 65,417 | $1.16M | 0.00% | −88,903−57.6% | Reduced |
| Jacobs Levy Equity Management, Inc | 64,667 | $1.14M | 0.00% | −28,909−30.9% | Reduced |
| Los Angeles Capital Management LLC | 63,810 | $1.13M | 0.00% | +35,460+125.1% | Added |
| Charles Schwab Investment Management Inc | 60,930 | $1.08M | 0.00% | +5,616+10.2% | Added |
| Hennion & Walsh Asset Management, Inc. | 51,678 | $913.7K | 0.04% | −2,383−4.4% | Reduced |
| CWM Advisors, LLC | 51,504 | $910.6K | 0.10% | +2,904+6.0% | Added |
| Prudential Financial Inc | 49,640 | $877.6K | 0.00% | −34,420−40.9% | Reduced |
| Bank of America Corp | 46,737 | $826.3K | 0.00% | +25,621+121.3% | Added |
| Barclays PLC | 43,897 | $776.1K | 0.00% | +20,121+84.6% | Added |
| Keebeck Wealth Management, LLC | 40,000 | $707.2K | 0.09% | −10,000−20.0% | Reduced |
| Millennium Management LLC | 39,728 | $702.4K | 0.00% | −8,775−18.1% | Reduced |
| American Century Companies Inc | 39,225 | $693.5K | 0.00% | +5,128+15.0% | Added |
| Cubist Systematic Strategies, LLC | 38,964 | $688.9K | 0.01% | +2,360+6.4% | Added |
| UBS Group AG | 36,954 | $653.3K | 0.00% | +6,118+19.8% | Added |
| Rhumbline Advisers | 34,805 | $615.3K | 0.00% | +1,773+5.4% | Added |
| Panagora Asset Management Inc | 33,789 | $597.4K | 0.00% | −74−0.2% | Reduced |
| Invesco Ltd. | 33,672 | $595.3K | 0.00% | −4,422−11.6% | Reduced |
| Marshall Wace, LLP | 33,075 | $584.8K | 0.00% | −20,182−37.9% | Reduced |
| AQR Capital Management LLC | 32,054 | $566.7K | 0.00% | +15,590+94.7% | Added |
| Walleye Capital LLC | 30,344 | $536.5K | 0.00% | +30,344 | New |
| HSBC Holdings PLC | 30,026 | $525.1K | 0.00% | +30,026 | New |
| Ameriprise Financial Inc | 27,721 | $490.1K | 0.00% | −3,058−9.9% | Reduced |
| Susquehanna International Group, LLP | 27,103 | $479.2K | 0.00% | +1,430+5.6% | Added |
| Man Group plc | 26,335 | $465.6K | 0.00% | −909−3.3% | Reduced |
| Segall Bryant & Hamill, LLC | 25,806 | $456.3K | 0.01% | +25,806 | New |
| State of Wyoming | 25,016 | $442.3K | 0.05% | +18,515+284.8% | Added |
| Martingale Asset Management L P | 24,942 | $441.0K | 0.01% | +5,426+27.8% | Added |
| Stifel Financial Corp | 23,191 | $410.0K | 0.00% | +198+0.9% | Added |
| Significant Wealth Partners LLC | 23,172 | $409.7K | 0.20% | +1,005+4.5% | Added |
| UBS Asset Management Americas Inc | 22,229 | $393.0K | 0.00% | +22,229 | New |
| Royal Bank of Canada | 21,994 | $389.0K | 0.00% | −1,681−7.1% | Reduced |
| Engineers Gate Manager LP | 21,958 | $388.2K | 0.00% | −4,948−18.4% | Reduced |
| State Board of Administration of Florida Retirement System | 20,163 | $356.5K | 0.00% | −13,310−39.8% | Reduced |
| Wells Fargo & Company | 20,043 | $354.4K | 0.00% | −3,364−14.4% | Reduced |
| Wiley Bros.-Aintree Capital, LLC | 20,000 | $353.6K | 0.00% | +20,000 | New |
| Alliancebernstein L.P. | 18,560 | $328.1K | 0.00% | +8,500+84.5% | Added |
| Magnetar Financial LLC | 18,480 | $326.7K | 0.00% | +18,480 | New |
| FMR LLC | 17,400 | $307.6K | 0.00% | −1,943−10.0% | Reduced |
| R Squared Ltd | 17,397 | $307.6K | 0.17% | +17,397 | New |
| Hillsdale Investment Management Inc. | 16,500 | $291.7K | 0.01% | +16,500 | New |
| Financial Advocates Investment Management | 15,867 | $280.5K | 0.02% | −482−2.9% | Reduced |
| Truvestments Capital LLC | 15,379 | $271.9K | 0.05% | −5,092−24.9% | Reduced |
| D. E. Shaw & Co., Inc. | 14,499 | $256.3K | 0.00% | +14,499 | New |
| Winton Group Ltd | 14,213 | $251.3K | 0.01% | +14,213 | New |
| Deutsche Bank AG | 13,392 | $236.8K | 0.00% | −4,037−23.2% | Reduced |
| Intech Investment Management LLC | 12,516 | $221.3K | 0.00% | +12,516 | New |
| Grantham, Mayo, Van Otterloo & Co. LLC | 12,307 | $217.6K | 0.00% | 00.0% | Unchanged |
| Cerity Partners LLC | 12,066 | $213.3K | 0.00% | +126+1.1% | Added |
| MetLife Investment Management | 11,696 | $206.8K | 0.00% | +1,363+13.2% | Added |
| Quest Partners LLC | 11,342 | $200.5K | 0.02% | −1,395−11.0% | Reduced |
| Occudo Quantitative Strategies LP | 11,215 | $198.3K | 0.02% | −6,298−36.0% | Reduced |
| New Age Alpha Advisors, LLC | 11,156 | $197.2K | 0.01% | +533+5.0% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 11,154 | $197.2K | 0.00% | +184+1.7% | Added |
| Public Employees Retirement System of Ohio | 10,673 | $188.7K | 0.00% | 00.0% | Unchanged |
| Virtus Investment Advisers, Inc. | 10,267 | $181.5K | 0.06% | +875+9.3% | Added |
| Price T Rowe Associates Inc | 10,202 | $181.0K | 0.00% | +10,202 | New |
| Raymond James Financial Inc | 8,832 | $156.2K | 0.00% | +8,832 | New |
| New York State Common Retirement Fund | 7,450 | $131.7K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 6,897 | $121.9K | 0.00% | −6,867−49.9% | Reduced |
| Legal & General Group Plc | 5,665 | $100.2K | 0.00% | +119+2.1% | Added |
| BNP Paribas Arbitrage, SA | 4,872 | $86.1K | 0.00% | +3,778+345.3% | Added |
| Police & Firemen's Retirement System of New Jersey | 4,304 | $76.1K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 3,617 | $63.9K | 0.00% | +87+2.5% | Added |
| Tower Research Capital LLC (TRC) | 2,774 | $49.0K | 0.00% | +2,113+319.7% | Added |
| Russell Investments Group, Ltd. | 2,613 | $46.2K | 0.00% | +747+40.0% | Added |
| US Bancorp | 2,539 | $44.9K | 0.00% | −251−9.0% | Reduced |
| Caption Management, LLC | 2,532 | $44.8K | 0.00% | +2,532 | New |
| SBI Securities Co., Ltd. | 2,516 | $44.5K | 0.00% | +316+14.4% | Added |
| CWM, LLC | 2,287 | $40.0K | 0.00% | +544+31.2% | Added |
| Ameritas Investment Partners, Inc. | 2,080 | $36.8K | 0.00% | +612+41.7% | Added |
| Larson Financial Group LLC | 2,000 | $35.4K | 0.00% | 00.0% | Unchanged |
| Hager Investment Management Services, LLC | 1,498 | $26.5K | 0.02% | 00.0% | Unchanged |
| Great West Life Assurance Co | 1,457 | $26.0K | 0.00% | +231+18.8% | Added |
| McIlrath & Eck, LLC | 1,451 | $25.7K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 1,421 | $25.1K | 0.00% | +1,098+339.9% | Added |
| RMG Wealth Management LLC | 1,304 | $22.7K | 0.00% | +1,304 | New |