SPOK · Spok Holdings, Inc · Holdings

$10.96 -0.01 (-0.09%)

Russell 2000 member Rebalance outlook locked

Market Cap

$218.80M

20.92M

Volume · Oct 6 136.22K Avg daily vol (3M) 149.99K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.

Quarter:

Holders: 134

Total Value: $111,487,877

Total Shares: 10,888,178

Showing 1–100 of 134 holdings by value · page 1 of 2

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 133 13F filers

Top Holder

15.8%

of institutional value

Top 5

46.4%

of institutional value

Top 10

61.6%

of institutional value

HHI

588

Broadly held

Showing 100 of 134

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

BlackRock, Inc.

$17,604,799

15.79%

1,719,219

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	36,394	$372,674	2.1%	Sole
BlackRock Asset Management Canada Ltd	22	$225	0.0%	Sole
BlackRock Investment Management, LLC	59,495	$609,228	3.5%	Sole
BLACKROCK ADVISORS LLC	50,224	$514,293	2.9%	Sole
BlackRock Fund Advisors	815,178	$8,347,422	47.4%	Sole
BlackRock Institutional Trust Company, N.A.	744,563	$7,624,325	43.3%	Sole
Aperio Group, LLC	13,343	$136,632	0.8%	Sole

RENAISSANCE TECHNOLOGIES LLC

$11,761,448

10.55%

1,148,579

VANGUARD CAPITAL MANAGEMENT LLC

$8,932,956

8.01%

872,359

DIMENSIONAL FUND ADVISORS LP

$7,348,386

6.59%

717,616

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Dimensional Fund Advisors Ltd.	2,294	$23,490	0.3%	Defined
DFA Australia Ltd.	2,200	$22,528	0.3%	Defined
Dimensional Ireland Ltd	36,328	$371,998	5.1%	Defined
Held directly	676,794	$6,930,370	94.3%	Sole

GEODE CAPITAL MANAGEMENT, LLC

$6,101,421

5.47%

595,842

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	77,112	$789,626	12.9%	Defined
Held directly	518,730	$5,311,795	87.1%	Defined

STATE STREET CORP

$4,829,020

4.33%

471,584

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	471,584	$4,829,020	100.0%	Defined

HighTower Advisors, LLC

$3,480,494

3.12%

339,892

Qube Research & Technologies Ltd

$2,945,198

2.64%

287,617

GOLDMAN SACHS GROUP INC

$2,887,475

2.59%

281,980

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	23,321	$238,807	8.3%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	258,659	$2,648,668	91.7%	Defined

VANGUARD PORTFOLIO MANAGEMENT LLC

$2,798,366

2.51%

273,278

Bank of New York Mellon Corp

$2,397,306

2.15%

234,112

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	181,234	$1,855,836	77.4%	Defined
The Bank of New York Mellon	40,852	$418,324	17.4%	Defined
BNY Mellon, NA joint	12,000	$122,880	5.1%	Defined
Held directly	26	$266	0.0%	Defined

NORTHERN TRUST CORP

$2,282,443

2.05%

222,895

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	219,575	$2,248,447	98.5%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	3,320	$33,996	1.5%	Other

Uniplan Investment Counsel, Inc.

$2,209,423

1.98%

215,764

CSM Advisors, LLC

$2,180,198

1.96%

212,910

UNITED CAPITAL FINANCIAL ADVISORS, LLC

$1,994,905

1.79%

194,815

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
United Capital Financial Partners, LLC	194,815	$1,994,905	100.0%	Defined

CITADEL ADVISORS LLC

$1,878,497

1.68%

183,447

MORGAN STANLEY

$1,705,725

1.53%

166,575

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	3,675	$37,632	2.2%	Defined
MORGAN STANLEY & CO. LLC	5,845	$59,852	3.5%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	84,321	$863,447	50.6%	Defined
MORGAN STANLEY SMITH BARNEY LLC	87	$890	0.1%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	72,647	$743,904	43.6%	Defined

JACOBS LEVY EQUITY MANAGEMENT, INC

$1,641,594

1.47%

160,312

GSA CAPITAL PARTNERS LLP

$1,537,269

1.38%

150,124

VANGUARD FIDUCIARY TRUST CO

$1,401,835

1.26%

136,898

D. E. Shaw & Co., Inc.

$1,332,868

1.20%

130,163

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
D. E. SHAW & CO, L.P.	106,919	$1,094,850	82.1%	Defined
D. E. Shaw Investment Management, L.L.C. joint	23,244	$238,018	17.9%	Defined

Connor, Clark & Lunn Investment Management Ltd.

$1,100,544

0.99%

107,475

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	107,475	$1,100,544	100.0%	Sole

PANAGORA ASSET MANAGEMENT INC

$952,627

0.85%

93,030

North Star Investment Management Corp.

$921,600

0.83%

90,000

FMR LLC

$913,008

0.82%

89,161

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	60,900	$623,616	68.3%	Defined
STRATEGIC ADVISERS LLC	28,261	$289,392	31.7%	Defined

FIDELIS CAPITAL PARTNERS, LLC

$768,737

0.69%

75,072

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$715,335

0.64%

69,857

FIRST TRUST ADVISORS LP

$709,847

0.64%

69,321

JPMORGAN CHASE & CO

$672,285

0.60%

65,653

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	11,322	$115,937	17.2%	Defined
J.P. Morgan Investment Management Inc.	53,873	$551,659	82.1%	Defined
J.P. Morgan Securities plc	458	$4,689	0.7%	Defined

Quantinno Capital Management LP

$651,264

0.58%

63,600

Caption Management, LLC

$614,400

0.55%

60,000

Man Group plc

$590,970

0.53%

57,712

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Numeric Investors LLC	57,712	$590,970	100.0%	Defined

VICTORY CAPITAL MANAGEMENT INC

$588,902

0.53%

57,510

Keebeck Wealth Management

$512,000

0.46%

50,000

Nuveen, LLC

$505,937

0.45%

49,408

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Nuveen Asset Management, LLC joint	1,642	$16,814	3.3%	Defined
TEACHERS ADVISORS, LLC joint	47,766	$489,123	96.7%	Defined

Campbell & CO Investment Adviser LLC

$492,369

0.44%

48,083

Numerai GP LLC

$473,323

0.42%

46,223

AQR CAPITAL MANAGEMENT LLC

$460,663

0.41%

44,987

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Petros Family Wealth, LLC	70	$716	0.2%	Other
KEB ASSET MANAGEMENT, LLC	1	$10	0.0%	Other
Compound Planning, Inc.	8	$81	0.0%	Other
Arax Advisory Partners	609	$6,236	1.4%	Other
HALBERT HARGROVE GLOBAL ADVISORS, LLC	450	$4,608	1.0%	Other
Stokes Family Office, LLC	12	$122	0.0%	Other
Held directly	43,837	$448,890	97.4%	Defined

Atom Investors LP

$453,519

0.41%

44,289

AMERICAN CENTURY COMPANIES INC

$435,097

0.39%

42,490

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AMERICAN CENTURY INVESTMENT MANAGEMENT INC	42,490	$435,097	100.0%	Defined

Trexquant Investment LP

$401,244

0.36%

39,184

AMERIPRISE FINANCIAL INC

$399,503

0.36%

39,014

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Columbia Management Investment Advisers, LLC	36,568	$374,456	93.7%	Defined
Ameriprise Financial Services, LLC	2,446	$25,047	6.3%	Defined

Russell Investments Group, Ltd.

$397,322

0.36%

38,801

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC	38,801	$397,322	100.0%	Defined

Invesco Ltd.

$356,268

0.32%

34,792

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Advisers, Inc. joint	3,988	$40,836	11.5%	Defined
Invesco Trust Co joint	8,334	$85,340	24.0%	Defined
Invesco Capital Management LLC	22,470	$230,092	64.6%	Defined

BRIDGEWAY CAPITAL MANAGEMENT, LLC

$354,304

0.32%

34,600

RHUMBLINE ADVISERS

$322,918

0.29%

31,535

UBS Group AG

$313,065

0.28%

30,573

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	20,308	$207,953	66.4%	Defined
UBS AG	9,354	$95,784	30.6%	Defined
UBS Securities LLC	911	$9,328	3.0%	Defined

EntryPoint Capital, LLC

$295,444

0.27%

28,852

WELLS FARGO & COMPANY/MN

$290,231

0.26%

28,343

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO BANK N A	17,550	$179,712	61.9%	Defined
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	4,270	$43,724	15.1%	Defined
WELLS FARGO CLEARING SERVICES, LLC	6,523	$66,795	23.0%	Defined

ALLIANCEBERNSTEIN L.P.

$285,286

0.26%

27,860

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	27,860	$285,286	100.0%	Defined

GUGGENHEIM CAPITAL LLC

$276,746

0.25%

27,026

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SECURITY INVESTORS LLC	27,026	$276,746	100.0%	Defined

BANK OF AMERICA CORP /DE/

$267,202

0.24%

26,094

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	26,094	$267,202	100.0%	Defined

MARTINGALE ASSET MANAGEMENT L P

$267,171

0.24%

26,091

Cambria Investment Management, L.P.

$262,000

0.24%

25,586

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Tidal Investments LLC	25,586	$262,000	100.0%	Other

Schonfeld Strategic Advisors LLC

$250,368

0.22%

24,450

TWO SIGMA INVESTMENTS, LP

$237,056

0.21%

23,150

MILLENNIUM MANAGEMENT LLC

$229,171

0.21%

22,380

PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO

$212,869

0.19%

20,788

DEUTSCHE BANK AG\

$205,568

0.18%

20,075

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS Investments UK Ltd	20,075	$205,568	100.0%	Defined

Redhawk Wealth Advisors, Inc.

$196,147

0.18%

19,155

Point72 Asset Management, L.P.

$195,635

0.18%

19,105

Hennion & Walsh Asset Management, Inc.

$188,743

0.17%

18,432

Significant Wealth Partners LLC

$185,804

0.17%

18,145

MERCER GLOBAL ADVISORS INC /ADV

$156,979

0.14%

15,330

OCCUDO QUANTITATIVE STRATEGIES LP

$155,801

0.14%

15,215

CANADA PENSION PLAN INVESTMENT BOARD

$155,648

0.14%

15,200

JANE STREET GROUP, LLC

$155,576

0.14%

15,193

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	11,659	$119,388	76.7%	Defined
Jane Street Global Trading, LLC	3,534	$36,188	23.3%	Defined

Empowered Funds, LLC

$154,818

0.14%

15,119

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Sequoia Financial Group, LLC	15,119	$154,818	100.0%	Other

PRICE T ROWE ASSOCIATES INC /MD/

$151,459

0.14%

14,791

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
T. Rowe Price International Ltd	14,791	$151,459	100.0%	Defined

Brevan Howard Capital Management LP

$143,462

0.13%

14,010

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Brevan Howard US Investment Management, LP	14,010	$143,462	100.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$142,612

0.13%

13,927

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	13,927	$142,612	100.0%	Other

Cetera Investment Advisers

$142,325

0.13%

13,899

Amundi

$125,358

0.11%

12,242

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Amundi Asset Management	12,242	$125,358	100.0%	Defined

Vanguard Personalized Indexing Management, LLC

$124,211

0.11%

12,130

HSBC HOLDINGS PLC

$123,432

0.11%

12,054

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
HSBC BANK PLC	12,054	$123,432	100.0%	Defined

MetLife Investment Management, LLC

$115,466

0.10%

11,276

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
METLIFE INC	11,276	$115,466	100.0%	Defined

LOS ANGELES CAPITAL MANAGEMENT LLC

$111,667

0.10%

10,905

CITIGROUP INC

$108,564

0.10%

10,602

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	10,602	$108,564	100.0%	Defined

AXQ CAPITAL, LP

$107,909

0.10%

10,538

Grantham, Mayo, Van Otterloo & Co. LLC

$107,243

0.10%

10,473

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$98,805

0.09%

9,649

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Global X Management CO LLC joint	9,649	$98,805	100.0%	Defined

Vanguard Global Advisers, LLC

$92,026

0.08%

8,987

VIRTUS ADVISERS, LLC

$70,041

0.06%

6,840

Truvestments Capital LLC

$69,580

0.06%

6,795

Police & Firemen's Retirement System of New Jersey

$67,553

0.06%

6,597

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Capital	6,597	$67,553	100.0%	Defined

BARCLAYS PLC

$66,652

0.06%

6,509

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	5,871	$60,119	90.2%	Defined
BARCLAYS CAPITAL INC.	638	$6,533	9.8%	Defined

OSAIC HOLDINGS, INC.

$61,870

0.06%

6,042

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	6,042	$61,870	100.0%	Defined

New Age Alpha Advisors, LLC

$59,955

0.05%

5,855

Triumph Capital Management

$50,903

0.05%

4,971

PNC FINANCIAL SERVICES GROUP, INC.

$40,181

0.04%

3,924

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PNC Bank, National Association	3,924	$40,181	100.0%	Defined

BNP PARIBAS ARBITRAGE, SA

$35,543

0.03%

3,471

SBI Securities Co., Ltd.

$28,190

0.03%

2,753

Rockefeller Capital Management L.P.

$28,098

0.03%

2,744

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
ROCKEFELLER & CO. LLC	550	$5,632	20.0%	Defined
ROCKEFELLER TRUST COMPANY, N.A.	2,194	$22,466	80.0%	Defined

ROYAL BANK OF CANADA

$26,101

0.02%

2,549

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC CMA LTD.	622	$6,369	24.4%	Defined
RBC Capital Markets, LLC	1,926	$19,722	75.6%	Defined
Held directly	1	$10	0.0%	Sole

Tower Research Capital LLC (TRC)

$24,524

0.02%

2,395

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	2,395	$24,524	100.0%	Defined

CANADA LIFE ASSURANCE Co

$24,432

0.02%

2,386

IFG Advisory, LLC

$22,845

0.02%

2,231

GAMMA Investing LLC

$22,016

0.02%

2,150

Ameritas Investment Partners, Inc.

$21,299

0.02%

2,080

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
EATON VANCE MANAGEMENT	2,080	$21,299	100.0%	Other

Larson Financial Group LLC

$20,480

0.02%

2,000

Key facts CIK 1289945 CUSIP 84863T106 13F (30d) 2 filings 2 filers Visit website Investor relations