Spok Holdings, Inc - SPOK

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q1 2026 · Compare: Q4 2025
13D/13G major owners: Ownership tab.
Methodology: Market value and % of portfolio use SEC reported VALUE ($000). For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received. Details.
Rows: 0
Investor History Status Shares held Market value ($000) % of portfolio Previous % Rank Change in shares % change in shares Source Date reported
BlackRock, Inc. History Reduced 1,676,227 18,270 0.0% 0.0% 1 -123,322 -6.85% Q1 2026 May 13, 2026
VANGUARD GROUP INC History No change 1,229,078 16,211 0.0% 0.0% 2 0 0.0% Q4 2025 Jan 29, 2026
RENAISSANCE TECHNOLOGIES LLC History Added to 1,261,579 13,751 0.02% 0.03% 3 +15,000 1.2% Q1 2026 May 14, 2026
VANGUARD CAPITAL MANAGEMENT LLC History New 859,530 9,368 0.0% 4 +859,530 New Q1 2026 May 15, 2026
DIMENSIONAL FUND ADVISORS LP History Added to 715,869 7,803 0.0% 0.0% 5 +12,043 1.71% Q1 2026 May 07, 2026
GEODE CAPITAL MANAGEMENT, LLC History Reduced 545,718 5,949 0.0% 0.0% 6 -52,834 -8.83% Q1 2026 May 15, 2026
STATE STREET CORP History Added to 461,790 5,033 0.0% 0.0% 7 +14,871 3.33% Q1 2026 May 15, 2026
HighTower Advisors, LLC History Reduced 381,815 4,161 0.0% 0.01% 8 -560 -0.15% Q1 2026 May 05, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC History New 265,028 2,888 0.0% 9 +265,028 New Q1 2026 May 08, 2026
GOLDMAN SACHS GROUP INC History Reduced 219,581 2,393 0.0% 0.0% 10 -142,890 -39.42% Q1 2026 May 15, 2026
Bank of New York Mellon Corp History Added to 217,803 2,374 0.0% 0.0% 11 +4,987 2.34% Q1 2026 May 05, 2026
NORTHERN TRUST CORP History Reduced 216,543 2,360 0.0% 0.0% 12 -551 -0.25% Q1 2026 May 14, 2026
CSM Advisors, LLC History Reduced 213,130 2,323 0.06% 0.09% 13 -49,815 -18.95% Q1 2026 May 15, 2026
Uniplan Investment Counsel, Inc. History Added to 209,602 2,284 0.23% 0.21% 14 +48,605 30.19% Q1 2026 May 15, 2026
Qube Research & Technologies Ltd History Reduced 172,057 1,875 0.0% 0.0% 15 -6,035 -3.39% Q1 2026 May 15, 2026
MORGAN STANLEY History Reduced 159,826 1,742 0.0% 0.0% 16 -17,867 -10.05% Q1 2026 May 15, 2026
Connor, Clark & Lunn Investment Management Ltd. History Reduced 144,851 1,578 0.0% 0.01% 17 -52,014 -26.42% Q1 2026 May 11, 2026
VANGUARD FIDUCIARY TRUST CO History New 129,248 1,408 0.0% 18 +129,248 New Q1 2026 May 08, 2026
Trexquant Investment LP History Reduced 128,856 1,404 0.01% 0.02% 19 -41,797 -24.49% Q1 2026 May 15, 2026
North Star Investment Management Corp. History No change 122,000 1,329 0.08% 0.1% 20 0 0.0% Q1 2026 Apr 23, 2026
JACOBS LEVY EQUITY MANAGEMENT, INC History Reduced 116,810 1,273 0.01% 0.01% 21 -2,157 -1.81% Q1 2026 May 15, 2026
MARSHALL WACE, LLP History New 112,789 1,229 0.0% 22 +112,789 New Q1 2026 May 14, 2026
UNITED CAPITAL FINANCIAL ADVISORS, LLC History New 104,723 1,141 0.01% 23 +104,723 New Q1 2026 May 15, 2026
Point72 Asset Management, L.P. History Added to 89,627 976 0.0% 0.0% 24 +70,902 378.65% Q1 2026 May 15, 2026
D. E. Shaw & Co., Inc. History Added to 89,451 975 0.0% 0.0% 25 +18,823 26.65% Q1 2026 May 15, 2026
JANE STREET GROUP, LLC History Added to 86,524 943 0.0% 0.0% 26 +72,760 528.63% Q1 2026 May 12, 2026
GSA CAPITAL PARTNERS LLP History Added to 85,824 935 0.06% 0.05% 27 +45,796 114.41% Q1 2026 May 08, 2026
PANAGORA ASSET MANAGEMENT INC History Reduced 78,295 853 0.0% 0.0% 28 -14,790 -15.89% Q1 2026 May 14, 2026
FIDELIS CAPITAL PARTNERS, LLC History New 75,001 817 0.06% 29 +75,001 New Q1 2026 May 06, 2026
Nuveen, LLC History Added to 73,336 799 0.0% 0.0% 30 +518 0.71% Q1 2026 Apr 30, 2026
JPMORGAN CHASE & CO History Reduced 69,693 783 0.0% 0.0% 31 -22,130 -24.1% Q1 2026 May 13, 2026
Numerai GP LLC History New 69,016 752 0.08% 32 +69,016 New Q1 2026 May 15, 2026
FIRST TRUST ADVISORS LP History Added to 65,498 713 0.0% 0.0% 33 +379 0.58% Q1 2026 May 13, 2026
Engineers Gate Manager LP History Added to 64,068 698 0.01% 0.01% 34 +27,712 76.22% Q1 2026 May 15, 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC History Reduced 56,035 610 0.0% 0.0% 35 -4,954 -8.12% Q1 2026 May 15, 2026
Campbell & CO Investment Adviser LLC History Added to 50,869 554 0.03% 0.03% 36 +1,831 3.73% Q1 2026 May 15, 2026
TWO SIGMA ADVISERS, LP History No change 42,072 554 0.0% 0.0% 37 0 0.0% Q4 2025 Feb 17, 2026
Keebeck Wealth Management History Added to 50,000 545 0.06% 0.06% 38 +10,000 25.0% Q1 2026 May 14, 2026
Man Group plc History Added to 48,325 526 0.0% 0.0% 39 +21,886 82.78% Q1 2026 May 15, 2026
AMERICAN CENTURY COMPANIES INC History Reduced 43,368 472 0.0% 0.0% 40 -315 -0.72% Q1 2026 May 15, 2026
AQR CAPITAL MANAGEMENT LLC History Added to 43,132 470 0.0% 0.0% 41 +26,766 163.55% Q1 2026 May 15, 2026
VICTORY CAPITAL MANAGEMENT INC History Added to 42,816 466 0.0% 0.0% 42 +5,779 15.6% Q1 2026 May 15, 2026
HSBC HOLDINGS PLC History Reduced 41,499 458 0.0% 0.0% 43 -18,832 -31.21% Q1 2026 Apr 30, 2026
Dynamic Technology Lab Private Ltd History New 37,544 409 0.07% 44 +37,544 New Q1 2026 May 15, 2026
MILLENNIUM MANAGEMENT LLC History Reduced 37,155 404 0.0% 0.0% 45 -88,653 -70.47% Q1 2026 May 15, 2026
ALLIANCEBERNSTEIN L.P. History Added to 28,160 371 0.0% 0.0% 46 +4,000 16.56% Q1 2026 May 15, 2026
RHUMBLINE ADVISERS History Reduced 31,194 340 0.0% 0.0% 47 -340 -1.08% Q1 2026 May 12, 2026
Invesco Ltd. History Reduced 30,475 332 0.0% 0.0% 48 -455 -1.47% Q1 2026 May 12, 2026
UBS Group AG History Reduced 29,018 316 0.0% 0.0% 49 -27,937 -49.05% Q1 2026 May 05, 2026
BRIDGEWAY CAPITAL MANAGEMENT, LLC History New 26,600 289 0.01% 51 +26,600 New Q1 2026 May 15, 2026
BANK OF AMERICA CORP /DE/ History Reduced 26,528 289 0.0% 0.0% 50 -9,959 -27.29% Q1 2026 May 15, 2026
Quantinno Capital Management LP History Reduced 26,150 285 0.0% 0.0% 52 -66,576 -71.8% Q1 2026 May 15, 2026
MARTINGALE ASSET MANAGEMENT L P History Reduced 23,025 250 0.01% 0.01% 53 -669 -2.82% Q1 2026 May 13, 2026
STATE OF WISCONSIN INVESTMENT BOARD History Added to 20,300 221 0.0% 0.0% 54 +9,200 82.88% Q1 2026 May 15, 2026
TWO SIGMA INVESTMENTS, LP History Reduced 19,900 216 0.0% 0.0% 55 -42,687 -68.2% Q1 2026 May 15, 2026
Cambria Investment Management, L.P. History Added to 19,744 215 0.01% 0.01% 56 +7,590 62.45% Q1 2026 May 14, 2026
WELLS FARGO & COMPANY/MN History Reduced 18,991 207 0.0% 0.0% 57 -10,643 -35.91% Q1 2026 May 11, 2026
Hennion & Walsh Asset Management, Inc. History Reduced 18,707 203 0.01% 0.01% 58 -139 -0.74% Q1 2026 May 13, 2026
OCCUDO QUANTITATIVE STRATEGIES LP History Added to 18,948 202 0.01% 0.01% 59 +5,416 40.02% Q1 2026 May 15, 2026
DEUTSCHE BANK AG\ History Added to 17,974 195 0.0% 0.0% 60 +4,820 36.64% Q1 2026 May 06, 2026
CITADEL ADVISORS LLC History Reduced 17,775 193 0.0% 0.0% 61 -62,717 -77.92% Q1 2026 May 15, 2026
Aquatic Capital Management LLC History Added to 17,342 189 0.01% 0.0% 62 +12,376 249.21% Q1 2026 May 15, 2026
AMERIPRISE FINANCIAL INC History Reduced 16,881 184 0.0% 0.0% 63 -3,128 -15.63% Q1 2026 May 15, 2026
Significant Wealth Partners LLC History Added to 16,683 181 0.22% 0.22% 64 +1,885 12.74% Q1 2026 Apr 08, 2026
BARCLAYS PLC History Reduced 15,320 166 0.0% 0.0% 65 -29,200 -65.59% Q1 2026 May 14, 2026
Empowered Funds, LLC History New 15,203 165 0.0% 67 +15,203 New Q1 2026 May 14, 2026
CANADA PENSION PLAN INVESTMENT BOARD History No change 15,200 165 0.0% 0.0% 66 0 0.0% Q1 2026 May 15, 2026
FMR LLC History Reduced 15,029 163 0.0% 0.0% 68 -111,953 -88.16% Q1 2026 May 15, 2026
PRICE T ROWE ASSOCIATES INC /MD/ History Added to 14,791 162 0.0% 0.0% 69 +4,047 37.67% Q1 2026 May 15, 2026
EntryPoint Capital, LLC History New 14,850 161 0.05% 70 +14,850 New Q1 2026 May 14, 2026
Magnetar Financial LLC History Reduced 13,904 151 0.0% 0.0% 71 -7,577 -35.27% Q1 2026 May 13, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP History Added to 13,064 142 0.0% 0.0% 72 +1,964 17.69% Q1 2026 May 15, 2026
Squarepoint Ops LLC History Reduced 12,481 136 0.0% 0.0% 73 -3,631 -22.54% Q1 2026 May 15, 2026
Brady Martz Wealth Solutions, LLC History New 12,220 133 0.02% 74 +12,220 New Q1 2026 Apr 15, 2026
Focus Partners Advisor Solutions, LLC History New 12,111 132 0.0% 75 +12,111 New Q1 2026 May 13, 2026
Quadrature Capital Ltd History New 11,367 123 0.0% 76 +11,367 New Q1 2026 May 15, 2026
AlphaQuest LLC History No change 9,168 120 0.01% 0.01% 77 0 0.0% Q4 2025 Feb 09, 2026
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO History No change 10,673 116 0.0% 0.0% 78 0 0.0% Q1 2026 May 14, 2026
Grantham, Mayo, Van Otterloo & Co. LLC History Reduced 10,473 114 0.0% 0.0% 79 -1,834 -14.9% Q1 2026 May 14, 2026
AXQ CAPITAL, LP History New 10,283 112 0.01% 80 +10,283 New Q1 2026 May 13, 2026
Redhawk Wealth Advisors, Inc. History New 10,134 110 0.01% 81 +10,134 New Q1 2026 Apr 15, 2026
State of Wyoming History Added to 10,013 109 0.01% 0.01% 83 +6,167 160.35% Q1 2026 May 13, 2026
OXFORD ASSET MANAGEMENT LLP History Reduced 10,020 109 0.05% 0.06% 82 -332 -3.21% Q1 2026 May 15, 2026
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. History Added to 9,683 105 0.0% 0.0% 84 +238 2.52% Q1 2026 May 15, 2026
Vanguard Global Advisers, LLC History New 8,987 97 0.0% 85 +8,987 New Q1 2026 May 08, 2026
Russell Investments Group, Ltd. History Added to 7,851 85 0.0% 0.0% 86 +4,113 110.03% Q1 2026 May 08, 2026
VIRTUS ADVISERS, LLC History Reduced 7,125 77 0.04% 0.09% 87 -7,538 -51.41% Q1 2026 May 14, 2026
Truvestments Capital LLC History Reduced 7,014 76 0.01% 0.02% 88 -1,814 -20.55% Q1 2026 May 13, 2026
Police & Firemen's Retirement System of New Jersey History No change 6,597 71 0.0% 0.0% 89 0 0.0% Q1 2026 Apr 29, 2026
MetLife Investment Management, LLC History Reduced 6,472 70 0.0% 0.0% 90 -4,579 -41.44% Q1 2026 May 14, 2026
CWM, LLC History Added to 5,874 64 0.0% 0.0% 91 +5,017 585.41% Q1 2026 May 14, 2026
New Age Alpha Advisors, LLC History No change 5,855 63 0.0% 0.0% 92 0 0.0% Q1 2026 May 11, 2026
Triumph Capital Management History Added to 5,501 59 0.01% 0.01% 93 +700 14.58% Q1 2026 May 13, 2026
BNP PARIBAS FINANCIAL MARKETS History Reduced 4,389 47 0.0% 0.0% 94 -297 -6.34% Q1 2026 May 12, 2026
Tower Research Capital LLC (TRC) History Added to 4,168 45 0.0% 0.0% 95 +1,466 54.26% Q1 2026 May 15, 2026
Legal & General Group Plc History No change 3,954 43 0.0% 0.0% 96 0 0.0% Q1 2026 May 08, 2026
Rockefeller Capital Management L.P. History Added to 2,744 29 0.0% 0.0% 97 +2,194 398.91% Q1 2026 May 14, 2026
CANADA LIFE ASSURANCE Co History Added to 2,565 28 0.0% 0.0% 98 +100 4.06% Q1 2026 May 14, 2026
Ameritas Investment Partners, Inc. History No change 2,080 22 0.0% 0.0% 99 0 0.0% Q1 2026 May 13, 2026
Larson Financial Group LLC History No change 2,000 21 0.0% 0.0% 100 0 0.0% Q1 2026 May 15, 2026
SBI Securities Co., Ltd. History Added to 1,859 20 0.0% 0.0% 101 +112 6.41% Q1 2026 Apr 27, 2026
CITIGROUP INC History Reduced 1,627 17 0.0% 0.0% 102 -5,405 -76.86% Q1 2026 May 11, 2026
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM History Reduced 1,102 12 0.0% 0.0% 103 -150 -11.98% Q1 2026 May 15, 2026
McIlrath & Eck, LLC History Reduced 1,032 11 0.0% 0.0% 104 -419 -28.88% Q1 2026 May 19, 2026
ROYAL BANK OF CANADA History Reduced 756 8 0.0% 0.0% 106 -2,344 -75.61% Q1 2026 May 15, 2026
NISA INVESTMENT ADVISORS, LLC History No change 792 8 0.0% 0.0% 105 0 0.0% Q1 2026 Apr 30, 2026
Sterling Capital Management LLC History Reduced 674 7 0.0% 0.0% 107 -500 -42.59% Q1 2026 Apr 22, 2026
State of Alaska, Department of Revenue History No change 653 7 0.0% 0.0% 108 0 0.0% Q1 2026 Apr 20, 2026
Covestor Ltd History Added to 542 6 0.0% 0.0% 109 +56 11.52% Q1 2026 May 05, 2026
GAMMA Investing LLC History Reduced 472 5 0.0% 0.0% 111 -1,367 -74.33% Q1 2026 Apr 06, 2026
PNC FINANCIAL SERVICES GROUP, INC. History Added to 550 5 0.0% 0.0% 110 +474 623.68% Q1 2026 May 08, 2026
NEW YORK STATE COMMON RETIREMENT FUND History No change 450 4 0.0% 0.0% 112 0 0.0% Q1 2026 May 06, 2026
HARBOUR INVESTMENTS, INC. History Added to 320 3 0.0% 0.0% 113 +200 166.67% Q1 2026 May 15, 2026
Geneos Wealth Management Inc. History No change 200 2 0.0% 0.0% 114 0 0.0% Q1 2026 May 04, 2026
OSAIC HOLDINGS, INC. History Reduced 150 1 0.0% 0.0% 119 -200 -57.14% Q1 2026 May 15, 2026
JONES FINANCIAL COMPANIES LLLP History Reduced 150 1 0.0% 0.0% 115 -163 -52.08% Q1 2026 May 15, 2026
Allworth Financial LP History Added to 129 1 0.0% 117 +120 1333.33% Q1 2026 May 14, 2026
Optiver Holding B.V. History Reduced 162 1 0.0% 0.0% 121 -104 -39.1% Q1 2026 May 15, 2026
Farther Finance Advisors, LLC History Reduced 137 1 0.0% 0.0% 122 -72 -34.45% Q1 2026 Apr 07, 2026
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC History Reduced 97 1 0.0% 0.0% 116 -41 -29.71% Q1 2026 May 13, 2026
Capital Advisors, Ltd. LLC History No change 65 1 0.0% 0.0% 118 0 0.0% Q1 2026 Apr 16, 2026
Steward Partners Investment Advisory, LLC History No change 100 1 0.0% 0.0% 120 0 0.0% Q1 2026 May 08, 2026
ACADIAN ASSET MANAGEMENT LLC History Closed out 0 0 0.01% -322,043 -100.0% Q1 2026 May 13, 2026
LOS ANGELES CAPITAL MANAGEMENT LLC History Closed out 0 0 0.0% -102,021 -100.0% Q1 2026 May 08, 2026
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM History Closed out 0 0 0.0% -22,698 -100.0% Q1 2026 May 08, 2026
BOOTHBAY FUND MANAGEMENT, LLC History Closed out 0 0 0.0% -22,231 -100.0% Q1 2026 May 15, 2026
Brevan Howard Capital Management LP History Closed out 0 0 0.0% -19,185 -100.0% Q1 2026 May 15, 2026
Hillsdale Investment Management Inc. History Closed out 0 0 0.01% -14,100 -100.0% Q1 2026 May 04, 2026
ALGERT GLOBAL LLC History Closed out 0 0 0.0% -12,080 -100.0% Q1 2026 May 14, 2026
Versant Capital Management, Inc History Reduced 89 0 0.01% -6,561 -98.66% Q1 2026 Apr 06, 2026
Kestra Advisory Services, LLC History Closed out 0 0 0.0% -1,738 -100.0% Q1 2026 Apr 30, 2026
NewEdge Advisors, LLC History Closed out 0 0 0.0% -643 -100.0% Q1 2026 May 15, 2026
AMALGAMATED BANK History Closed out 0 0 0.0% -640 -100.0% Q1 2026 May 08, 2026
Parallel Advisors, LLC History Closed out 0 0 0.0% -258 -100.0% Q1 2026 May 07, 2026
Cornerstone Financial Management LLC History Closed out 0 0 0.0% -105 -100.0% Q1 2026 May 08, 2026
ROTHSCHILD INVESTMENT LLC History Added to 74 0 +72 3600.0% Q1 2026 May 07, 2026
ZIONS BANCORPORATION, NATIONAL ASSOCIATION /UT/ History Closed out 0 0 -61 -100.0% Q1 2026 May 08, 2026
MAI Capital Management History Added to 84 0 +60 250.0% Q1 2026 May 15, 2026
JPL Wealth Management, LLC History New 55 0 +55 New Q1 2026 May 08, 2026
SIMPLEX TRADING, LLC History Reduced 19 0 -51 -72.86% Q1 2026 May 14, 2026
HUNTINGTON NATIONAL BANK History New 40 0 +40 New Q1 2026 May 15, 2026
True Wealth Design, LLC History Reduced 7 0 -38 -84.44% Q1 2026 Apr 13, 2026
Private Wealth Management Group, LLC History Closed out 0 0 -34 -100.0% Q1 2026 Apr 23, 2026
KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC History Closed out 0 0 -30 -100.0% Q1 2026 May 14, 2026
Sound Income Strategies, LLC History New 29 0 +29 New Q1 2026 Apr 27, 2026
IFP Advisors, Inc History Added to 49 0 +21 75.0% Q1 2026 Apr 13, 2026
Wealth Preservation Advisors, LLC History New 13 0 +13 New Q1 2026 May 15, 2026
Arax Advisory Partners History Added to 27 0 +11 68.75% Q1 2026 May 13, 2026
SJS Investment Consulting Inc. History New 10 0 +10 New Q1 2026 Apr 23, 2026
QUADRANT CAPITAL GROUP LLC History Reduced 20 0 -7 -25.93% Q1 2026 May 13, 2026
Sunbelt Securities, Inc. History New 2 0 +2 New Q1 2026 May 15, 2026
EverSource Wealth Advisors, LLC History Added to 49 0 +1 2.08% Q1 2026 May 15, 2026
FIFTH THIRD BANCORP History No change 16 0 0 0.0% Q1 2026 May 01, 2026
SageView Advisory Group, LLC History No change 60 0 0 0.0% Q4 2025 Feb 17, 2026
TD Waterhouse Canada Inc. History No change 68 0 0 0.0% Q1 2026 May 12, 2026
Godfrey Financial Associates, Inc. History No change 50 0 0 0.0% Q1 2026 May 11, 2026