PUBM · PubMatic, Inc. · Holdings

$16.18 -0.11 (-0.68%) At close · Sep 9

Russell 2000 member Rebalance outlook locked

Market Cap

$737.00M

45.55M

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 →

Quarter:

Holders: 152

Total Value: $421,105,705

Total Shares: 32,096,479

Showing 1–100 of 163 holdings by value · page 1 of 2

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 152 13F filers · Δ vs Mar 31, 2026

Top Holder

10.6%

−0.5 pts

Top 5

35.5%

−1.6 pts

Top 10

53.3%

−2.3 pts

HHI

416

Broadly held−21

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: -2

Institutional value: +67.6%

Shares held: +4.5%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega AMERICAN CENTURY COMPANIES INC	+529,804	642,076
Large Walleye Trading LLC	+501,577	1,215,760
Small Whitefort Capital Management, LP	+420,656	1,110,656
Mega Nuveen, LLC	+381,254	464,187
Mega VANGUARD PORTFOLIO MANAGEMENT LLC	+308,763	947,548

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mid CenterBook Partners LP	−1,328,117	413,983
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP	−592,037	407,347
Mega D. E. Shaw & Co., Inc.	−400,794	44,320
Mega ROYAL BANK OF CANADA	−120,991	619,290
Large RENAISSANCE TECHNOLOGIES LLC	−119,484	1,421,049

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mid HIGHBRIDGE CAPITAL MANAGEMENT LLC	644,593	$8,457,060
Mid BOOTHBAY FUND MANAGEMENT, LLC	181,615	$2,382,788
Large Caption Management, LLC	110,950	$1,455,664
Mid Jump Financial, LLC	100,612	$1,320,029
Large Walleye Capital LLC	83,142	$1,090,823

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Large TUDOR INVESTMENT CORP ET AL	351,112	$2,872,096
Small Pinnacle Holdings, LLC	157,884	$1,291,491
Large Man Group plc	117,730	$963,031
Mid GSA CAPITAL PARTNERS LLP	89,051	$728,437
Small Cardinal Point Capital Management ULC	71,500	$584,870

Filter: New 20 Increased 58 Reduced 45 Sold out 22 Unchanged 29

Showing 100 of 163

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

Graham Holdings Co

$44,593,620

10.59%

3,398,904

BlackRock, Inc.

$43,027,427

10.22%

3,279,530

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	73,107	$959,163	2.2%	Sole
BlackRock Asset Management Canada Ltd	276	$3,621	0.0%	Sole
BlackRock Investment Management, LLC	120,037	$1,574,885	3.7%	Sole
BLACKROCK ADVISORS LLC	96,256	$1,262,878	2.9%	Sole
BlackRock Fund Advisors	1,493,639	$19,596,543	45.5%	Sole
BlackRock Institutional Trust Company, N.A.	1,321,255	$17,334,865	40.3%	Sole
BlackRock Japan Co. Ltd	4,971	$65,219	0.2%	Sole
BlackRock Investment Management (UK) Ltd.	32,481	$426,150	1.0%	Sole
BlackRock Asset Management Ireland Ltd	2,889	$37,903	0.1%	Sole
Aperio Group, LLC	134,530	$1,765,033	4.1%	Sole
SpiderRock Advisors, LLC	89	$1,167	0.0%	Sole

VANGUARD CAPITAL MANAGEMENT LLC

$21,796,413

5.18%

1,661,312

ACADIAN ASSET MANAGEMENT LLC

$20,649,712

4.90%

1,573,911

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

Manager	Shares	Value (USD)	% of position	Discretion
Acadian Inc	1,573,911	$20,649,712	100.0%	Defined

DIMENSIONAL FUND ADVISORS LP

$19,563,505

4.65%

1,491,121

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.	5,729	$75,164	0.4%	Defined
DFA Australia Ltd.	17,840	$234,060	1.2%	Defined
Dimensional Ireland Ltd	63,821	$837,331	4.3%	Defined
Held directly	1,403,731	$18,416,950	94.1%	Sole

RENAISSANCE TECHNOLOGIES LLC

$18,644,162

4.43%

1,421,049

Whitefort Capital Management, LP

$14,571,806

3.46%

1,110,656

Walleye Trading LLC

$14,300,800

3.40%

1,090,000

GEODE CAPITAL MANAGEMENT, LLC

$13,012,415

3.09%

991,800

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	139,254	$1,827,012	14.0%	Defined
Held directly	852,546	$11,185,403	86.0%	Defined

VANGUARD PORTFOLIO MANAGEMENT LLC

$12,431,829

2.95%

947,548

JACOBS LEVY EQUITY MANAGEMENT, INC

$11,322,507

2.69%

862,996

STATE STREET CORP

$11,206,408

2.66%

854,147

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	854,147	$11,206,408	100.0%	Defined

S SQUARED TECHNOLOGY, LLC

$9,815,058

2.33%

748,099

Simcoe Capital LLC

$9,104,007

2.16%

693,903

HIGHBRIDGE CAPITAL MANAGEMENT LLC

$8,457,060

2.01%

644,593

AMERICAN CENTURY COMPANIES INC

$8,424,037

2.00%

642,076

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	642,076	$8,424,037	100.0%	Defined

TWO SIGMA INVESTMENTS, LP

$8,371,898

1.99%

638,102

ROYAL BANK OF CANADA

$8,125,083

1.93%

619,290

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

Manager	Shares	Value (USD)	% of position	Discretion
RBC CMA LTD.	1,175	$15,416	0.2%	Defined
RBC Capital Markets, LLC	24,899	$326,674	4.0%	Defined
RBC Global Asset Management (U.S.) Inc.	485,727	$6,372,738	78.4%	Defined
RBC Dominion Securities Inc.	3,300	$43,296	0.5%	Defined
Alaska Permanent Fund Corp joint	104,188	$1,366,946	16.8%	Defined
Held directly	1	$13	0.0%	Sole

Nuveen, LLC

$6,090,133

1.45%

464,187

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	19,118	$250,828	4.1%	Defined
TEACHERS ADVISORS, LLC joint	445,069	$5,839,305	95.9%	Defined

CITADEL ADVISORS LLC

$5,443,225

1.29%

414,880

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

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	18,963	$248,794	4.6%	Defined
Held directly	395,917	$5,194,431	95.4%	Defined

CenterBook Partners LP

$5,431,456

1.29%

413,983

Trexquant Investment LP

$5,018,728

1.19%

382,525

NORTHERN TRUST CORP

$4,567,517

1.08%

348,134

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	341,996	$4,486,987	98.2%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	6,138	$80,530	1.8%	Other

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$3,983,546

0.95%

303,624

PANAGORA ASSET MANAGEMENT INC

$3,775,083

0.90%

287,735

AQR CAPITAL MANAGEMENT LLC

$3,758,063

0.89%

286,438

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

Manager	Shares	Value (USD)	% of position	Discretion
RF&L WEALTH MANAGEMENT, LLC	16	$209	0.0%	Other
Prism Planning Partners LLC	171	$2,243	0.1%	Other
Arax Advisory Partners	3,275	$42,968	1.1%	Other
HALBERT HARGROVE GLOBAL ADVISORS, LLC	1,865	$24,468	0.7%	Other
Stokes Family Office, LLC	283	$3,712	0.1%	Other
Held directly	280,828	$3,684,463	98.0%	Defined

MORGAN STANLEY

$3,729,436

0.89%

284,256

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	2,610	$34,243	0.9%	Defined
MORGAN STANLEY & CO. LLC	11,282	$148,019	4.0%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	53,721	$704,819	18.9%	Defined
MORGAN STANLEY SMITH BARNEY LLC	3,033	$39,792	1.1%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	175,610	$2,304,003	61.8%	Defined
EATON VANCE MANAGEMENT	38,000	$498,560	13.4%	Defined

Quantinno Capital Management LP

$3,275,906

0.78%

249,688

VANGUARD FIDUCIARY TRUST CO

$3,157,682

0.75%

240,677

GOLDMAN SACHS GROUP INC

$3,156,383

0.75%

240,578

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	84,478	$1,108,351	35.1%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	156,100	$2,048,032	64.9%	Defined

JPMORGAN CHASE & CO

$2,951,369

0.70%

224,952

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.	27,444	$360,065	12.2%	Defined
J.P. Morgan Investment Management Inc.	197,031	$2,585,046	87.6%	Defined
J.P. Morgan Securities plc	477	$6,258	0.2%	Defined

FRANKLIN RESOURCES INC

$2,929,905

0.70%

223,316

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

Manager	Shares	Value (USD)	% of position	Discretion
FIDUCIARY TRUST INTERNATIONAL LLC	512	$6,717	0.2%	Defined
FRANKLIN ADVISERS INC	218,478	$2,866,431	97.8%	Defined
PUTNAM ADVISORY CO LLC	4,326	$56,757	1.9%	Defined

JANE STREET GROUP, LLC

$2,612,598

0.62%

199,131

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	68,367	$896,975	34.3%	Defined
Jane Street Global Trading, LLC	130,764	$1,715,623	65.7%	Defined

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

$2,565,786

0.61%

195,563

UBS Group AG

$2,440,752

0.58%

186,033

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

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	186,033	$2,440,752	100.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$2,393,704

0.57%

182,447

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

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	182,447	$2,393,704	100.0%	Other

BOOTHBAY FUND MANAGEMENT, LLC

$2,382,788

0.57%

181,615

BRIDGEWAY CAPITAL MANAGEMENT, LLC

$2,299,936

0.55%

175,300

BANK OF AMERICA CORP /DE/

$2,282,302

0.54%

173,956

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	173,956	$2,282,302	100.0%	Defined

P.A.W. CAPITAL CORP

$1,968,000

0.47%

150,000

Diversified Investment Strategies, LLC

$1,836,800

0.44%

140,000

CITADEL ADVISORS LLC

$1,801,376

0.43%

137,300

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

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	137,300	$1,801,376	100.0%	Defined

AMERIPRISE FINANCIAL INC

$1,758,093

0.42%

134,001

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	134,001	$1,758,093	100.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$1,687,232

0.40%

128,600

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

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	128,600	$1,687,232	100.0%	Other

Bank of New York Mellon Corp

$1,594,603

0.38%

121,540

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

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	51,083	$670,208	42.0%	Defined
The Bank of New York Mellon	70,446	$924,251	58.0%	Defined
BNY Mellon, NA	10	$131	0.0%	Defined
Held directly	1	$13	0.0%	Defined

Walleye Trading LLC

$1,498,304

0.36%

114,200

Invesco Ltd.

$1,354,402

0.32%

103,232

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	4,747	$62,280	4.6%	Defined
Invesco Trust Co joint	15,586	$204,488	15.1%	Defined
Invesco Capital Management LLC	82,899	$1,087,634	80.3%	Defined

Jump Financial, LLC

$1,320,029

0.31%

100,612

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

Manager	Shares	Value (USD)	% of position	Discretion
Jump Trading Holdings, LLC	112	$1,469	0.1%	Defined
Leap GP LLC joint	100,500	$1,318,560	99.9%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$1,263,456

0.30%

96,300

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

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	96,300	$1,263,456	100.0%	Other

DEUTSCHE BANK AG\

$1,229,553

0.29%

93,716

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	93,716	$1,229,553	100.0%	Defined

CITADEL ADVISORS LLC

$1,221,472

0.29%

93,100

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

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	93,100	$1,221,472	100.0%	Defined

Caption Management, LLC

$1,180,800

0.28%

90,000

MILLENNIUM MANAGEMENT LLC

$1,129,094

0.27%

86,059

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$1,125,761

0.27%

85,805

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	85,805	$1,125,761	100.0%	Defined

VICTORY CAPITAL MANAGEMENT INC

$1,113,350

0.26%

84,859

Russell Investments Group, Ltd.

$1,097,194

0.26%

83,628

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 joint	51,832	$680,034	62.0%	Other
Russell Investments Capital, LLC joint	6,291	$82,537	7.5%	Other
Russell Investments France SAS	1,998	$26,213	2.4%	Defined
Russell Investments Japan Co., LTD. joint	4,622	$60,640	5.5%	Other
Russell Investments Limited joint	6,198	$81,317	7.4%	Other
Russell Investments Trust Company joint	12,687	$166,453	15.2%	Other

Point72 Asset Management, L.P.

$1,041,229

0.25%

79,362

GROUP ONE TRADING LLC

$949,953

0.23%

72,405

PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO

$871,509

0.21%

66,426

Walleye Capital LLC

$831,047

0.20%

63,342

Squarepoint Ops LLC

$815,237

0.19%

62,137

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

Manager	Shares	Value (USD)	% of position	Discretion
Squarepoint Capital LLP	62,137	$815,237	100.0%	Defined

SIMPLEX TRADING, LLC

$774,749

0.18%

59,051

BARCLAYS PLC

$774,289

0.18%

59,016

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

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	58,049	$761,602	98.4%	Defined
BARCLAYS CAPITAL INC.	967	$12,687	1.6%	Defined

CANADA PENSION PLAN INVESTMENT BOARD

$767,520

0.18%

58,500

HSBC HOLDINGS PLC

$752,012

0.18%

57,318

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

Manager	Shares	Value (USD)	% of position	Discretion
HSBC BANK PLC	57,318	$752,012	100.0%	Defined

Creative Planning

$749,715

0.18%

57,143

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

Manager	Shares	Value (USD)	% of position	Discretion
CREATIVE PLANNING TRUST Co LLC	602	$7,898	1.1%	Defined
Held directly	56,541	$741,817	98.9%	Sole

Avestar Capital, LLC

$721,600

0.17%

55,000

VOYA INVESTMENT MANAGEMENT LLC

$696,475

0.17%

53,085

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

Manager	Shares	Value (USD)	% of position	Discretion
Voya Investment Management Co. LLC joint	53,085	$696,475	100.0%	Defined

Inspire Investing, LLC

$677,910

0.16%

51,670

IMC-Chicago, LLC

$657,062

0.16%

50,081

RHUMBLINE ADVISERS

$650,279

0.15%

49,564

State of Wyoming

$595,713

0.14%

45,405

D. E. Shaw & Co., Inc.

$581,478

0.14%

44,320

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.	44,320	$581,478	100.0%	Defined

RAYMOND JAMES FINANCIAL INC

$562,847

0.13%

42,900

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

Manager	Shares	Value (USD)	% of position	Discretion
RAYMOND JAMES & ASSOCIATES	45	$590	0.1%	Defined
Raymond James Financial Services Advisors, Inc.	42,855	$562,257	99.9%	Defined

STRS OHIO

$498,560

0.12%

38,000

FULLER & THALER ASSET MANAGEMENT, INC.

$478,105

0.11%

36,441

ALLIANCEBERNSTEIN L.P.

$474,944

0.11%

36,200

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

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	36,200	$474,944	100.0%	Defined

XTX Topco Ltd

$439,533

0.10%

33,501

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

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	33,501	$439,533	100.0%	Defined

WELLS FARGO & COMPANY/MN

$431,699

0.10%

32,904

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	32,714	$429,207	99.4%	Defined
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	100	$1,312	0.3%	Defined
WELLS FARGO CLEARING SERVICES, LLC	90	$1,180	0.3%	Defined

PRICE T ROWE ASSOCIATES INC /MD/

$420,364

0.10%

32,040

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	32,040	$420,364	100.0%	Defined

LOS ANGELES CAPITAL MANAGEMENT LLC

$370,876

0.09%

28,268

Allworth Financial LP

$337,433

0.08%

25,719

MetLife Investment Management, LLC

$321,492

0.08%

24,504

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

Manager	Shares	Value (USD)	% of position	Discretion
METLIFE INC	24,504	$321,492	100.0%	Defined

MERCER GLOBAL ADVISORS INC /ADV

$319,878

0.08%

24,381

Cambria Investment Management, L.P.

$299,503

0.07%

22,828

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

Manager	Shares	Value (USD)	% of position	Discretion
Tidal Investments LLC	22,828	$299,503	100.0%	Other

Cornerstone Investment Partners, LLC

$296,905

0.07%

22,630

GWN SECURITIES INC.

$290,201

0.07%

22,119

Sterling Capital Management LLC

$281,515

0.07%

21,457

Caption Management, LLC

$274,864

0.07%

20,950

CITIGROUP INC

$272,474

0.06%

20,768

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

Manager	Shares	Value (USD)	% of position	Discretion
Citibank, N.A. joint	2,749	$36,066	13.2%	Defined
Citigroup Financial Products Inc. joint	18,019	$236,408	86.8%	Defined

MEEDER ASSET MANAGEMENT INC

$254,737

0.06%

19,416

IEQ CAPITAL, LLC

$248,138

0.06%

18,913

Focus Partners Wealth

$233,929

0.06%

17,830

Diversified Trust Co

$230,439

0.05%

17,564

Balyasny Asset Management L.P.

$228,497

0.05%

17,416

SEI INVESTMENTS CO

$222,738

0.05%

16,977

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

Manager	Shares	Value (USD)	% of position	Discretion
SEI INVESTMENTS MANAGEMENT CORP	2	$26	0.0%	Sole
SEI TRUST CO	16,975	$222,712	100.0%	Sole

WINTON GROUP Ltd

$221,728

0.05%

16,900

JANE STREET GROUP, LLC

$211,232

0.05%

16,100

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	16,100	$211,232	100.0%	Defined

Grantham, Mayo, Van Otterloo & Co. LLC

$209,578

0.05%

15,974

Mariner, LLC

$198,230

0.05%

15,109

Key facts CIK 1422930 CUSIP 74467Q103 13F (30d) 98 filings 98 filers Visit website Investor relations