SPOK HLDGS INC SPOK
COM · Common Stock · CUSIP 84863T106
- SectorCommunication
- IndustryRadiotelephone Communications
- HeadquartersPlano, TX
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($7.2k this quarter). Holder counts are more reliable. Shares outstanding: 20.9m as of 2026-07-24, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $10.24. Options: 3 managers hold calls ($706.6k notional), 1 hold puts ($1.0k).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 60 |
| Q4 2022 | 79 |
| Q1 2023 | 86 |
| Q2 2023 | 88 |
| Q3 2023 | 98 |
| Q4 2023 | 108 |
| Q1 2024 | 112 |
| Q2 2024 | 116 |
| Q3 2024 | 110 |
| Q4 2024 | 117 |
| Q1 2025 | 126 |
| Q2 2025 | 131 |
| Q3 2025 | 143 |
| Q4 2025 | 134 |
| Q1 2026 | 139 |
| Q2 2026 | 133 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 55 | 53 |
| Q4 2024 | 61 | 48 |
| Q1 2025 | 63 | 51 |
| Q2 2025 | 75 | 52 |
| Q3 2025 | 81 | 48 |
| Q4 2025 | 58 | 82 |
| Q1 2026 | 65 | 72 |
| Q2 2026 | 79 | 61 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $301.9k | $964.1k | 3.19 |
| Q4 2025 | $315.2k | $280.9k | 0.89 |
| Q1 2026 | $32.7k | $7.6k | 0.23 |
| Q2 2026 | $706.6k | $1.0k | 0.00 |
Biggest buyers
| CITADEL ADVISORS LLC | Added | +165.7k |
| Qube Research & Technologies Ltd | Added | +115.6k |
| UNITED CAPITAL FINANCIAL ADVISORS, LLC | Added | +90.1k |
| FMR LLC | Added | +74.1k |
| GSA CAPITAL PARTNERS LLP | Added | +64.3k |
| GOLDMAN SACHS GROUP INC | Added | +62.4k |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +50.1k |
| Atom Investors LP | New | +44.3k |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Added | +43.5k |
| BlackRock, Inc. | Added | +43.0k |
Biggest sellers
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -113.0k |
| MARSHALL WACE, LLP | Sold out | -112.8k |
| Trexquant Investment LP | Reduced | -89.7k |
| JANE STREET GROUP, LLC | Reduced | -71.3k |
| Point72 Asset Management, L.P. | Reduced | -70.5k |
| Engineers Gate Manager LP | Sold out | -64.1k |
| HighTower Advisors, LLC | Reduced | -41.9k |
| Dynamic Technology Lab Private Ltd | Sold out | -37.5k |
| Connor, Clark & Lunn Investment Management Ltd. | Reduced | -37.4k |
| North Star Investment Management Corp. | Reduced | -32.0k |
Biggest calls
| Caption Management, LLC | New | $614.4k60.0k shares |
| SIMPLEX TRADING, LLC | Added | $58.4k5.7k shares |
| GROUP ONE TRADING LLC | Added | $33.8k3.3k shares |
Biggest puts
| SIMPLEX TRADING, LLC | Reduced | $1.0k100 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| RENAISSANCE TECHNOLOGIES LLC 13G · institution new · filed 2025-08-13 | 5.1% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 3 | $1.3m | — |
| Q1 2025 | 0 | — | 5 | $3.4m | — |
| Q2 2025 | 0 | — | 3 | $673.5k | — |
| Q3 2025 | 0 | — | 4 | $9.3m | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 2 | $473.4k | 1 | $110.0k | — |
| Q3 2026 | 0 | — | 2 | $319.8k | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-08-10 | Woods-Keisling Sharon Corporate Secretary, Treasurer | Sold | $226.0k20.0k shares |
| 2026-08-10 | COURNOYER CHRISTINE Director | Sold | $93.8k8.3k shares |
| 2026-06-16 | Stein Todd J Director · Braeside Capital, L.P. | Bought | $366.5k35.2k shares |
| 2026-05-12 | KELLY VINCENT D President & CEO, director · Vincent DePaul Kelly,Trustee of the Vincent DePaul Kelly Fifth Amended and Restated Revocable Trust | Bought | $53.5k5.0k shares |
| 2026-05-11 | KELLY VINCENT D President & CEO, director · Vincent DePaul Kelly,Trustee of the Vincent DePaul Kelly Fifth Amended and Restated Revocable Trust | Bought | $53.4k5.0k shares |
| 2026-05-05 | Woods-Keisling Sharon Corporate Secretary, Treasurer | Sold | $110.0k10.0k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.00% of their portfolio | 1.7m $17.6m | Added +43.0k |
| RENAISSANCE TECHNOLOGIES LLC 0.02% of their portfolio | 1.1m $11.8m | Reduced -113.0k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 872.4k $8.9m | Added +12.8k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 717.6k $7.3m | Added +1.7k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 595.8k $6.1m | Added +50.1k |
| STATE STREET CORP 0.00% of their portfolio | 471.6k $4.8m | Added +9.8k |
| HighTower Advisors, LLC 0.00% of their portfolio | 339.9k $3.5m | Reduced -41.9k |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 287.6k $2.9m | Added +115.6k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 282.0k $2.9m | Added +62.4k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 273.3k $2.8m | Added +8.2k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 234.1k $2.4m | Added +16.3k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 222.9k $2.3m | Added +6.4k |
| Uniplan Investment Counsel, Inc. 0.21% of their portfolio | 215.8k $2.2m | Added +6.2k |
| CSM Advisors, LLC 0.05% of their portfolio | 212.9k $2.2m | Reduced -220 |
| UNITED CAPITAL FINANCIAL ADVISORS, LLC 0.01% of their portfolio | 194.8k $2.0m | Added +90.1k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 183.4k $1.9m | Added +165.7k |
| MORGAN STANLEY 0.00% of their portfolio | 166.6k $1.7m | Added +6.7k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.01% of their portfolio | 160.3k $1.6m | Added +43.5k |
| GSA CAPITAL PARTNERS LLP 0.10% of their portfolio | 150.1k $1.5m | Added +64.3k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 136.9k $1.4m | Added +7.7k |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 130.2k $1.3m | Added +40.7k |
| Connor, Clark & Lunn Investment Management Ltd. 0.00% of their portfolio | 107.5k $1.1m | Reduced -37.4k |
| PANAGORA ASSET MANAGEMENT INC 0.00% of their portfolio | 93.0k $952.6k | Added +14.7k |
| North Star Investment Management Corp. 0.05% of their portfolio | 90.0k $921.6k | Reduced -32.0k |
| FMR LLC 0.00% of their portfolio | 89.2k $913.0k | Added +74.1k |
| FIDELIS CAPITAL PARTNERS, LLC 0.04% of their portfolio | 75.1k $768.7k | Added +71 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 69.9k $715.3k | Added +13.8k |
| FIRST TRUST ADVISORS LP 0.00% of their portfolio | 69.3k $709.8k | Added +3.8k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 65.7k $686.1k | Reduced -4.0k |
| Quantinno Capital Management LP 0.00% of their portfolio | 63.6k $651.3k | Added +37.5k |
| Man Group plc 0.00% of their portfolio | 57.7k $591.0k | Added +9.4k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 57.5k $588.9k | Added +14.7k |
| Keebeck Wealth Management 0.05% of their portfolio | 50.0k $512.0k | Unchanged |
| Nuveen, LLC 0.00% of their portfolio | 49.4k $505.9k | Reduced -23.9k |
| Campbell & CO Investment Adviser LLC 0.03% of their portfolio | 48.1k $492.4k | Reduced -2.8k |
| Numerai GP LLC 0.04% of their portfolio | 46.2k $473.3k | Reduced -22.8k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 45.0k $460.7k | Added +1.9k |
| Atom Investors LP 0.04% of their portfolio | 44.3k $453.5k | New |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 42.5k $435.1k | Reduced -878 |
| Trexquant Investment LP 0.00% of their portfolio | 39.2k $401.2k | Reduced -89.7k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 39.0k $399.5k | Added +22.1k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 38.8k $397.3k | Added +30.9k |
| Invesco Ltd. 0.00% of their portfolio | 34.8k $356.3k | Added +4.3k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 34.6k $354.3k | Added +8.0k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 31.5k $322.9k | Added +341 |
| UBS Group AG 0.00% of their portfolio | 30.6k $313.1k | Added +1.6k |
| EntryPoint Capital, LLC 0.07% of their portfolio | 28.9k $295.4k | Added +14.0k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 28.3k $290.2k | Added +9.4k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 27.9k $303.7k | Reduced -300 |
| GUGGENHEIM CAPITAL LLC 0.00% of their portfolio | 27.0k $276.7k | New |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 26.1k $267.2k | Reduced -434 |
| MARTINGALE ASSET MANAGEMENT L P 0.01% of their portfolio | 26.1k $267.2k | Added +3.1k |
| Cambria Investment Management, L.P. 0.01% of their portfolio | 25.6k $262.0k | Added +5.8k |
| Schonfeld Strategic Advisors LLC 0.00% of their portfolio | 24.4k $250.4k | New |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 23.1k $237.1k | Added +3.2k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 22.4k $229.2k | Reduced -14.8k |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.00% of their portfolio | 20.8k $212.9k | Added +10.1k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 20.1k $205.6k | Added +2.1k |
| Redhawk Wealth Advisors, Inc. 0.02% of their portfolio | 19.2k $196.1k | Added +9.0k |
| Point72 Asset Management, L.P. 0.00% of their portfolio | 19.1k $195.6k | Reduced -70.5k |
| Hennion & Walsh Asset Management, Inc. 0.01% of their portfolio | 18.4k $188.7k | Reduced -275 |
| Significant Wealth Partners LLC 0.20% of their portfolio | 18.1k $185.8k | Added +1.5k |
| MERCER GLOBAL ADVISORS INC /ADV 0.00% of their portfolio | 15.3k $157.0k | New |
| OCCUDO QUANTITATIVE STRATEGIES LP 0.01% of their portfolio | 15.2k $155.8k | Reduced -3.7k |
| CANADA PENSION PLAN INVESTMENT BOARD 0.00% of their portfolio | 15.2k $155.6k | Unchanged |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 15.2k $155.6k | Reduced -71.3k |
| Empowered Funds, LLC 0.00% of their portfolio | 15.1k $154.8k | Reduced -84 |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 14.8k $152.0k | Unchanged |
| Brevan Howard Capital Management LP 0.00% of their portfolio | 14.0k $143.5k | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 13.9k $142.6k | Added +863 |
| Cetera Investment Advisers 0.00% of their portfolio | 13.9k $142.3k | New |
| Amundi 0.00% of their portfolio | 12.2k $125.4k | New |
| Vanguard Personalized Indexing Management, LLC 0.00% of their portfolio | 12.1k $124.2k | New |
| HSBC HOLDINGS PLC 0.00% of their portfolio | 12.1k $124.5k | Reduced -29.4k |
| MetLife Investment Management, LLC 0.00% of their portfolio | 11.3k $115.5k | Added +4.8k |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 10.9k $111.7k | New |
| CITIGROUP INC 0.00% of their portfolio | 10.6k $108.6k | Added +9.0k |
| AXQ CAPITAL, LP 0.01% of their portfolio | 10.5k $107.9k | Added +255 |
| Grantham, Mayo, Van Otterloo & Co. LLC 0.00% of their portfolio | 10.5k $107.2k | Unchanged |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 9.6k $98.8k | Reduced -34 |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 9.0k $92.0k | Unchanged |
| VIRTUS ADVISERS, LLC 0.03% of their portfolio | 6.8k $70.0k | Reduced -285 |
| Truvestments Capital LLC 0.01% of their portfolio | 6.8k $69.6k | Reduced -219 |
| Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio | 6.6k $67.6k | Unchanged |
| BARCLAYS PLC 0.00% of their portfolio | 6.5k $66.7k | Reduced -8.8k |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 6.0k $61.9k | Added +5.9k |
| New Age Alpha Advisors, LLC 0.00% of their portfolio | 5.9k $60.0k | Unchanged |
| Triumph Capital Management 0.01% of their portfolio | 5.0k $50.9k | Reduced -530 |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 3.9k $40.2k | Added +3.4k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 3.5k $35.5k | Reduced -918 |
| SBI Securities Co., Ltd. 0.00% of their portfolio | 2.8k $28.2k | Added +894 |
| Rockefeller Capital Management L.P. 0.00% of their portfolio | 2.7k $28.1k | Unchanged |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 2.5k $26.0k | Added +1.8k |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 2.4k $24.5k | Reduced -1.8k |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 2.4k $24.0k | Reduced -179 |
| IFG Advisory, LLC 0.00% of their portfolio | 2.2k $22.8k | New |
| GAMMA Investing LLC 0.00% of their portfolio | 2.1k $22.0k | Added +1.7k |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 2.1k $21.3k | Unchanged |
| Larson Financial Group LLC 0.00% of their portfolio | 2.0k $20.5k | Unchanged |
| Legal & General Group Plc 0.00% of their portfolio | 1.9k $19.0k | Reduced -2.1k |