SPOK HOLDINGS INC (SPOK) Institutional Shareholders
SPOK HOLDINGS INC (SPOK) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $107.36M in SPOK holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of SPOK tracked by InsiderSet, reporting ownership valued at approximately $17.60M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $18.34M, representing an estimated gain of +4.20% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 63% of the total disclosed SPOK value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Renaissance Technologies LLC, Vanguard Capital Management Llc, and several other long-term asset managers with concentrated positions in SPOK HOLDINGS INC (SPOK).
This page ranks the largest institutional SPOK shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
130
Total Reported Value
$107.36M
Largest Holder
Blackrock, Inc.
Largest Position
$17.60M
Insider Transactions (90d)
8
Latest Filing Quarter
Q2 2026
New Institutional Positions
110
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 1,719,219 | $17,604,803 | $18,344,067 | +$739,264 | +4.20% | |
| Renaissance Technologies LLC | Jim Simons | 0.02% | 1,148,579 | $11,761,449 | $12,255,338 | +$493,889 | +4.20% |
| Vanguard Capital Management Llc | 0.00% | 872,359 | $8,932,956 | $9,308,071 | +$375,115 | +4.20% | |
| Dimensional Fund Advisors Lp | 0.00% | 717,616 | $7,348,899 | $7,656,963 | +$308,064 | +4.19% | |
| Geode Capital Management, Llc | 0.00% | 595,842 | $6,102,783 | $6,357,634 | +$254,851 | +4.18% | |
| State Street Corp | 0.00% | 471,584 | $4,829,020 | $5,031,801 | +$202,781 | +4.20% | |
| Qube Research & Technologies Ltd | 0.00% | 287,617 | $2,945,198 | $3,068,873 | +$123,675 | +4.20% | |
| Goldman Sachs Group Inc | 0.00% | 281,980 | $2,887,476 | $3,008,727 | +$121,251 | +4.20% | |
| Vanguard Portfolio Management Llc | 0.00% | 273,278 | $2,798,367 | $2,915,876 | +$117,509 | +4.20% | |
| Bank Of New York Mellon Corp | 0.00% | 234,112 | $2,397,305 | $2,497,975 | +$100,670 | +4.20% | |
| Northern Trust Corp | 0.00% | 222,895 | $2,282,445 | $2,378,290 | +$95,845 | +4.20% | |
| Uniplan Investment Counsel, Inc. | 0.21% | 215,764 | $2,209,424 | $2,302,202 | +$92,778 | +4.20% | |
| Csm Advisors, Llc | 0.05% | 212,910 | $2,179,000 | $2,271,750 | +$92,750 | +4.26% | |
| United Capital Financial Advisors, Llc | 0.01% | 194,815 | $1,994,906 | $2,078,676 | +$83,770 | +4.20% | |
| Citadel Advisors Llc | 0.00% | 183,447 | $1,878,497 | $1,957,379 | +$78,882 | +4.20% | |
| Morgan Stanley | 0.00% | 166,575 | $1,705,736 | $1,777,355 | +$71,619 | +4.20% | |
| Jacobs Levy Equity Management, Inc | 0.01% | 160,312 | $1,641,595 | $1,710,529 | +$68,934 | +4.20% | |
| Gsa Capital Partners Llp | 0.10% | 150,124 | $1,537,000 | $1,601,823 | +$64,823 | +4.22% | |
| Vanguard Fiduciary Trust Co | 0.00% | 136,898 | $1,401,836 | $1,460,702 | +$58,866 | +4.20% | |
| D. E. Shaw & Co., Inc. | 0.00% | 130,163 | $1,332,870 | $1,388,839 | +$55,969 | +4.20% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | 107,475 | $1,100,544 | $1,146,758 | +$46,214 | +4.20% | |
| Panagora Asset Management Inc | 0.00% | 93,030 | $952,627 | $992,630 | +$40,003 | +4.20% | |
| North Star Investment Management Corp. | 0.05% | 90,000 | $921,600 | $960,300 | +$38,700 | +4.20% | |
| Fmr Llc | 0.00% | 89,161 | $913,005 | $951,348 | +$38,343 | +4.20% | |
| Fidelis Capital Partners, Llc | 0.04% | 75,072 | $768,737 | $801,018 | +$32,281 | +4.20% | |
| Charles Schwab Investment Management Inc | 0.00% | 69,857 | $715,336 | $745,374 | +$30,038 | +4.20% | |
| First Trust Advisors Lp | 0.00% | 69,321 | $709,847 | $739,655 | +$29,808 | +4.20% | |
| Jpmorgan Chase & Co | 0.00% | 65,653 | $686,074 | $700,518 | +$14,444 | +2.11% | |
| Quantinno Capital Management Lp | 0.00% | 63,600 | $651,270 | $678,612 | +$27,342 | +4.20% | |
| Man Group Plc | 0.00% | 57,712 | $590,971 | $615,787 | +$24,816 | +4.20% | |
| Victory Capital Management Inc | 0.00% | 57,510 | $588,902 | $613,632 | +$24,730 | +4.20% | |
| Keebeck Wealth Management | 0.05% | 50,000 | $512,000 | $533,500 | +$21,500 | +4.20% | |
| Nuveen, Llc | 0.00% | 49,408 | $505,938 | $527,183 | +$21,245 | +4.20% | |
| Campbell & Co Investment Adviser Llc | 0.03% | 48,083 | $492,370 | $513,046 | +$20,676 | +4.20% | |
| Numerai Gp Llc | 0.04% | 46,223 | $473,324 | $493,199 | +$19,875 | +4.20% | |
| Aqr Capital Management Llc | 0.00% | 44,987 | $460,669 | $480,011 | +$19,342 | +4.20% | |
| Atom Investors Lp | 0.04% | 44,289 | $453,519 | $472,564 | +$19,045 | +4.20% | |
| American Century Companies Inc | 0.00% | 42,490 | $435,098 | $453,368 | +$18,270 | +4.20% | |
| Trexquant Investment Lp | 0.00% | 39,184 | $401,244 | $418,093 | +$16,849 | +4.20% | |
| Ameriprise Financial Inc | 0.00% | 39,014 | $399,503 | $416,279 | +$16,776 | +4.20% | |
| Russell Investments Group, Ltd. | 0.00% | 38,801 | $397,316 | $414,007 | +$16,691 | +4.20% | |
| Invesco Ltd. | 0.00% | 34,792 | $356,270 | $371,231 | +$14,961 | +4.20% | |
| Bridgeway Capital Management, Llc | 0.01% | 34,600 | $354,304 | $369,182 | +$14,878 | +4.20% | |
| Rhumbline Advisers | 0.00% | 31,535 | $322,911 | $336,478 | +$13,567 | +4.20% | |
| Ubs Group Ag | 0.00% | 30,573 | $313,068 | $326,214 | +$13,146 | +4.20% | |
| Alliancebernstein L.P. | 0.00% | 27,860 | $303,674 | $297,266 | -$6,408 | -2.11% | |
| Entrypoint Capital, Llc | 0.07% | 28,852 | $295,444 | $307,851 | +$12,407 | +4.20% | |
| Wells Fargo & Company/Mn | 0.00% | 28,343 | $290,226 | $302,420 | +$12,194 | +4.20% | |
| Guggenheim Capital Llc | 0.00% | 27,026 | $276,746 | $288,367 | +$11,621 | +4.20% | |
| Bank Of America Corp | 0.00% | 26,094 | $267,202 | $278,423 | +$11,221 | +4.20% |
Frequently asked questions about SPOK
Who owns the most SPOK stock?
The largest holders of SPOK are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for SPOK HOLDINGS INC (SPOK).
Is SPOK widely held by superinvestors?
Many widely followed stocks like SPOK appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly SPOK is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.