PubMatic, Inc. - PUBM

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q3 2026 · Compare: Q2 2026
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
Graham Holdings Co History No change 3,398,904 44,594 4.12% 4.12% 1 0 0.0% Q2 2026 Aug 14, 2026
BlackRock, Inc. History No change 3,279,530 43,027 0.0% 0.0% 2 0 0.0% Q2 2026 Aug 07, 2026
VANGUARD CAPITAL MANAGEMENT LLC History No change 1,661,312 21,796 0.0% 0.0% 3 0 0.0% Q2 2026 Aug 13, 2026
ACADIAN ASSET MANAGEMENT LLC History No change 1,573,911 20,641 0.02% 0.02% 4 0 0.0% Q2 2026 Aug 13, 2026
DIMENSIONAL FUND ADVISORS LP History No change 1,491,121 19,563 0.0% 0.0% 5 0 0.0% Q2 2026 Aug 11, 2026
RENAISSANCE TECHNOLOGIES LLC History No change 1,421,049 18,644 0.03% 0.03% 6 0 0.0% Q2 2026 Aug 13, 2026
Walleye Trading LLC History No change 1,215,760 15,950 0.02% 0.02% 7 0 0.0% Q2 2026 Aug 03, 2026
Whitefort Capital Management, LP History No change 1,110,656 14,571 3.59% 3.59% 8 0 0.0% Q2 2026 Aug 14, 2026
GEODE CAPITAL MANAGEMENT, LLC History No change 991,800 13,015 0.0% 0.0% 9 0 0.0% Q2 2026 Aug 12, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC History No change 947,548 12,431 0.0% 0.0% 10 0 0.0% Q2 2026 Aug 13, 2026
JACOBS LEVY EQUITY MANAGEMENT, INC History No change 862,996 11,322 0.04% 0.04% 11 0 0.0% Q2 2026 Aug 14, 2026
STATE STREET CORP History No change 854,147 11,206 0.0% 0.0% 12 0 0.0% Q2 2026 Sep 22, 2026
S SQUARED TECHNOLOGY, LLC History No change 748,099 9,815 3.05% 3.05% 13 0 0.0% Q2 2026 Aug 13, 2026
Simcoe Capital LLC History No change 693,903 9,104 5.55% 5.55% 14 0 0.0% Q2 2026 Aug 06, 2026
CITADEL ADVISORS LLC History No change 645,280 8,466 0.0% 0.0% 15 0 0.0% Q2 2026 Sep 02, 2026
AMERICAN CENTURY COMPANIES INC History No change 642,076 8,424 0.0% 0.0% 16 0 0.0% Q2 2026 Aug 12, 2026
HIGHBRIDGE CAPITAL MANAGEMENT LLC History No change 644,593 8,424 0.2% 0.2% 17 0 0.0% Q2 2026 Aug 14, 2026
TWO SIGMA INVESTMENTS, LP History No change 638,102 8,371 0.01% 0.01% 18 0 0.0% Q2 2026 Aug 14, 2026
ROYAL BANK OF CANADA History No change 619,290 8,125 0.0% 0.0% 19 0 0.0% Q2 2026 Aug 14, 2026
Nuveen, LLC History No change 464,187 6,090 0.0% 0.0% 20 0 0.0% Q2 2026 Aug 11, 2026
CenterBook Partners LP History No change 413,983 5,431 0.27% 0.27% 21 0 0.0% Q2 2026 Aug 11, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP History No change 407,347 5,344 0.0% 0.0% 22 0 0.0% Q2 2026 Aug 14, 2026
Trexquant Investment LP History No change 382,525 5,018 0.03% 0.03% 23 0 0.0% Q2 2026 Aug 14, 2026
NORTHERN TRUST CORP History No change 348,134 4,567 0.0% 0.0% 24 0 0.0% Q2 2026 Aug 13, 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC History No change 303,624 3,983 0.0% 0.0% 25 0 0.0% Q2 2026 Aug 14, 2026
PANAGORA ASSET MANAGEMENT INC History No change 287,735 3,775 0.01% 0.01% 26 0 0.0% Q2 2026 Aug 06, 2026
AQR CAPITAL MANAGEMENT LLC History No change 286,438 3,758 0.0% 0.0% 27 0 0.0% Q2 2026 Aug 14, 2026
MORGAN STANLEY History No change 284,256 3,729 0.0% 0.0% 28 0 0.0% Q2 2026 Aug 13, 2026
Quantinno Capital Management LP History No change 249,688 3,275 0.0% 0.0% 29 0 0.0% Q2 2026 Aug 13, 2026
VANGUARD FIDUCIARY TRUST CO History No change 240,677 3,157 0.0% 0.0% 30 0 0.0% Q2 2026 Aug 13, 2026
GOLDMAN SACHS GROUP INC History No change 240,578 3,156 0.0% 0.0% 31 0 0.0% Q2 2026 Aug 14, 2026
JANE STREET GROUP, LLC History No change 225,331 2,956 0.0% 0.0% 32 0 0.0% Q2 2026 Aug 14, 2026
JPMORGAN CHASE & CO History No change 224,952 2,940 0.0% 0.0% 33 0 0.0% Q2 2026 Aug 12, 2026
FRANKLIN RESOURCES INC History No change 223,316 2,929 0.0% 0.0% 34 0 0.0% Q2 2026 Aug 13, 2026
SIMPLEX TRADING, LLC History No change 200,551 2,631 0.0% 0.0% 35 0 0.0% Q2 2026 Aug 12, 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP History No change 195,563 2,565 0.0% 0.0% 36 0 0.0% Q2 2026 Aug 13, 2026
UBS Group AG History No change 186,033 2,440 0.0% 0.0% 37 0 0.0% Q2 2026 Aug 13, 2026
GROUP ONE TRADING LLC History No change 184,505 2,420 0.0% 0.0% 38 0 0.0% Q2 2026 Aug 13, 2026
BOOTHBAY FUND MANAGEMENT, LLC History No change 181,615 2,382 0.03% 0.03% 39 0 0.0% Q2 2026 Aug 14, 2026
BRIDGEWAY CAPITAL MANAGEMENT, LLC History No change 175,300 2,299 0.04% 0.04% 40 0 0.0% Q2 2026 Aug 14, 2026
BANK OF AMERICA CORP /DE/ History No change 173,956 2,282 0.0% 0.0% 41 0 0.0% Q2 2026 Aug 14, 2026
Pinnacle Holdings, LLC History No change 158,250 2,076 0.64% 0.64% 42 0 0.0% Q2 2026 Aug 12, 2026
P.A.W. CAPITAL CORP History No change 150,000 1,968 1.53% 1.53% 43 0 0.0% Q2 2026 Jul 28, 2026
Diversified Investment Strategies, LLC History No change 140,000 1,836 1.19% 1.19% 44 0 0.0% Q2 2026 Jul 27, 2026
AMERIPRISE FINANCIAL INC History No change 134,001 1,758 0.0% 0.0% 45 0 0.0% Q2 2026 Aug 14, 2026
IMC-Chicago, LLC History No change 131,081 1,719 0.0% 0.0% 46 0 0.0% Q2 2026 Aug 06, 2026
Bank of New York Mellon Corp History No change 121,540 1,594 0.0% 0.0% 47 0 0.0% Q2 2026 Aug 06, 2026
Caption Management, LLC History No change 110,950 1,455 0.01% 0.01% 48 0 0.0% Q2 2026 Aug 14, 2026
Invesco Ltd. History No change 103,232 1,354 0.0% 0.0% 49 0 0.0% Q2 2026 Aug 14, 2026
Jump Financial, LLC History No change 100,612 1,320 0.01% 0.01% 50 0 0.0% Q2 2026 Aug 13, 2026
DEUTSCHE BANK AG\ History No change 93,716 1,229 0.0% 0.0% 51 0 0.0% Q2 2026 Aug 07, 2026
MILLENNIUM MANAGEMENT LLC History No change 86,059 1,129 0.0% 0.0% 52 0 0.0% Q2 2026 Aug 14, 2026
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. History No change 85,805 1,125 0.0% 0.0% 53 0 0.0% Q2 2026 Aug 14, 2026
VICTORY CAPITAL MANAGEMENT INC History No change 84,859 1,113 0.0% 0.0% 54 0 0.0% Q2 2026 Aug 07, 2026
Russell Investments Group, Ltd. History No change 83,628 1,096 0.0% 0.0% 55 0 0.0% Q2 2026 Aug 06, 2026
Walleye Capital LLC History No change 83,142 1,090 0.0% 0.0% 56 0 0.0% Q2 2026 Aug 03, 2026
Point72 Asset Management, L.P. History No change 79,362 1,041 0.0% 0.0% 57 0 0.0% Q2 2026 Aug 14, 2026
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO History No change 66,426 871 0.0% 0.0% 58 0 0.0% Q2 2026 Aug 17, 2026
Squarepoint Ops LLC History No change 62,137 815 0.0% 0.0% 59 0 0.0% Q2 2026 Aug 14, 2026
BARCLAYS PLC History No change 59,016 774 0.0% 0.0% 60 0 0.0% Q2 2026 Aug 14, 2026
CANADA PENSION PLAN INVESTMENT BOARD History No change 58,500 767 0.0% 0.0% 61 0 0.0% Q2 2026 Aug 14, 2026
Creative Planning History No change 57,143 749 0.0% 0.0% 62 0 0.0% Q2 2026 Aug 13, 2026
HSBC HOLDINGS PLC History No change 57,318 748 0.0% 0.0% 63 0 0.0% Q2 2026 Aug 14, 2026
Avestar Capital, LLC History No change 55,000 721 0.04% 0.04% 64 0 0.0% Q2 2026 Jul 29, 2026
VOYA INVESTMENT MANAGEMENT LLC History No change 53,085 696 0.0% 0.0% 65 0 0.0% Q2 2026 Aug 12, 2026
Inspire Investing, LLC History No change 51,670 677 0.03% 0.03% 66 0 0.0% Q2 2026 Aug 12, 2026
RHUMBLINE ADVISERS History No change 49,564 650 0.0% 0.0% 67 0 0.0% Q2 2026 Aug 11, 2026
State of Wyoming History No change 45,405 595 0.06% 0.06% 68 0 0.0% Q2 2026 Aug 06, 2026
D. E. Shaw & Co., Inc. History No change 44,320 581 0.0% 0.0% 69 0 0.0% Q2 2026 Aug 14, 2026
RAYMOND JAMES FINANCIAL INC History No change 42,900 562 0.0% 0.0% 70 0 0.0% Q2 2026 Aug 14, 2026
STRS OHIO History No change 38,000 498 0.0% 0.0% 71 0 0.0% Q2 2026 Jul 30, 2026
FULLER & THALER ASSET MANAGEMENT, INC. History No change 36,441 478 0.0% 0.0% 72 0 0.0% Q2 2026 Aug 12, 2026
XTX Topco Ltd History No change 33,501 439 0.01% 0.01% 73 0 0.0% Q2 2026 Aug 14, 2026
WELLS FARGO & COMPANY/MN History No change 32,904 431 0.0% 0.0% 74 0 0.0% Q2 2026 Aug 14, 2026
PRICE T ROWE ASSOCIATES INC /MD/ History No change 32,040 421 0.0% 0.0% 75 0 0.0% Q2 2026 Aug 14, 2026
LOS ANGELES CAPITAL MANAGEMENT LLC History No change 28,268 370 0.0% 0.0% 76 0 0.0% Q2 2026 Aug 13, 2026
Allworth Financial LP History No change 25,719 337 0.0% 0.0% 77 0 0.0% Q2 2026 Aug 11, 2026
MetLife Investment Management, LLC History No change 24,504 321 0.0% 0.0% 78 0 0.0% Q2 2026 Aug 13, 2026
MERCER GLOBAL ADVISORS INC /ADV History No change 24,381 319 0.0% 0.0% 79 0 0.0% Q2 2026 Aug 19, 2026
Cambria Investment Management, L.P. History No change 22,828 299 0.01% 0.01% 80 0 0.0% Q2 2026 Aug 14, 2026
ALLIANCEBERNSTEIN L.P. History No change 36,200 296 0.0% 0.0% 81 0 0.0% Q2 2026 Aug 14, 2026
Cornerstone Investment Partners, LLC History No change 22,630 296 0.01% 0.01% 82 0 0.0% Q2 2026 Aug 07, 2026
GWN SECURITIES INC. History No change 22,119 290 0.05% 0.05% 83 0 0.0% Q2 2026 Aug 05, 2026
Sterling Capital Management LLC History No change 21,457 281 0.0% 0.0% 84 0 0.0% Q2 2026 Jul 28, 2026
CITIGROUP INC History No change 20,768 272 0.0% 0.0% 85 0 0.0% Q2 2026 Aug 03, 2026
MEEDER ASSET MANAGEMENT INC History No change 19,416 254 0.01% 0.01% 86 0 0.0% Q2 2026 Aug 07, 2026
IEQ CAPITAL, LLC History No change 18,913 248 0.0% 0.0% 87 0 0.0% Q2 2026 Aug 11, 2026
Focus Partners Wealth History No change 17,830 233 0.0% 0.0% 88 0 0.0% Q2 2026 Aug 12, 2026
Diversified Trust Co History No change 17,564 230 0.0% 0.0% 89 0 0.0% Q2 2026 Jul 17, 2026
BALYASNY ASSET MANAGEMENT L.P. History No change 17,416 228 0.0% 0.0% 90 0 0.0% Q2 2026 Aug 14, 2026
SEI INVESTMENTS CO History No change 16,977 222 0.0% 0.0% 91 0 0.0% Q2 2026 Aug 14, 2026
WINTON GROUP Ltd History No change 16,900 221 0.01% 0.01% 92 0 0.0% Q2 2026 Aug 07, 2026
Grantham, Mayo, Van Otterloo & Co. LLC History No change 15,974 209 0.0% 0.0% 93 0 0.0% Q2 2026 Aug 13, 2026
Mariner, LLC History No change 15,109 198 0.0% 0.0% 94 0 0.0% Q2 2026 Aug 13, 2026
Jasper Ridge Partners, L.P. History No change 15,032 197 0.0% 0.0% 95 0 0.0% Q2 2026 Aug 14, 2026
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC History No change 14,545 197 0.0% 0.0% 96 0 0.0% Q2 2026 Jul 15, 2026
Versant Capital Management, Inc History Reduced 10,060 188 0.02% 0.01% 97 -597 -5.6% Q3 2026 Oct 01, 2026
OCCUDO QUANTITATIVE STRATEGIES LP History No change 13,371 175 0.01% 0.01% 98 0 0.0% Q2 2026 Aug 13, 2026
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM History No change 12,430 163 0.0% 0.0% 99 0 0.0% Q2 2026 Aug 10, 2026
Police & Firemen's Retirement System of New Jersey History No change 12,458 163 0.0% 0.0% 100 0 0.0% Q2 2026 Jul 23, 2026
Cetera Investment Advisers History No change 12,059 158 0.0% 0.0% 101 0 0.0% Q2 2026 Aug 12, 2026
NEW YORK STATE COMMON RETIREMENT FUND History No change 11,752 154 0.0% 0.0% 102 0 0.0% Q2 2026 Jul 29, 2026
Inscription Capital, LLC History No change 11,485 150 0.01% 0.01% 103 0 0.0% Q2 2026 Aug 13, 2026
Vanguard Global Advisers, LLC History No change 11,499 150 0.0% 0.0% 104 0 0.0% Q2 2026 Aug 13, 2026
Brevan Howard Capital Management LP History No change 11,350 148 0.0% 0.0% 105 0 0.0% Q2 2026 Aug 14, 2026
OSAIC HOLDINGS, INC. History No change 11,307 148 0.0% 0.0% 106 0 0.0% Q2 2026 Aug 14, 2026
MANUFACTURERS LIFE INSURANCE COMPANY, THE History No change 10,907 143 0.0% 0.0% 107 0 0.0% Q2 2026 Sep 09, 2026
CAXTON ASSOCIATES LLP History No change 10,888 142 0.0% 0.0% 108 0 0.0% Q2 2026 Aug 14, 2026
Centiva Capital, LP History No change 10,000 131 0.0% 0.0% 109 0 0.0% Q2 2026 Aug 13, 2026
Legal & General Group Plc History No change 8,911 116 0.0% 0.0% 110 0 0.0% Q2 2026 Aug 14, 2026
FMR LLC History No change 8,459 110 0.0% 0.0% 111 0 0.0% Q2 2026 Aug 13, 2026
Arax Advisory Partners History No change 6,639 87 0.0% 0.0% 112 0 0.0% Q2 2026 Aug 10, 2026
BNP PARIBAS FINANCIAL MARKETS History No change 6,222 81 0.0% 0.0% 113 0 0.0% Q2 2026 Aug 13, 2026
GAMMA Investing LLC History No change 4,364 57 0.0% 0.0% 114 0 0.0% Q2 2026 Jul 07, 2026
Ameritas Investment Partners, Inc. History No change 3,056 40 0.0% 0.0% 115 0 0.0% Q2 2026 Aug 13, 2026
NISA INVESTMENT ADVISORS, LLC History No change 2,869 37 0.0% 0.0% 116 0 0.0% Q2 2026 Aug 10, 2026
Caitong International Asset Management Co., Ltd History No change 2,444 32 0.0% 0.0% 117 0 0.0% Q2 2026 Aug 04, 2026
Mirae Asset Global Investments Co., Ltd. History No change 2,246 29 0.0% 0.0% 118 0 0.0% Q2 2026 Jul 22, 2026
Rockefeller Capital Management L.P. History No change 2,042 26 0.0% 0.0% 119 0 0.0% Q2 2026 Aug 13, 2026
JONES FINANCIAL COMPANIES LLLP History No change 1,953 24 0.0% 0.0% 120 0 0.0% Q2 2026 Aug 14, 2026
Tower Research Capital LLC (TRC) History No change 1,393 18 0.0% 0.0% 121 0 0.0% Q2 2026 Aug 11, 2026
State of Alaska, Department of Revenue History No change 1,267 16 0.0% 0.0% 122 0 0.0% Q2 2026 Jul 20, 2026
MassMutual Private Wealth & Trust, FSB History No change 808 15 0.0% 0.0% 123 0 0.0% Q3 2026 Oct 05, 2026
HARBOUR INVESTMENTS, INC. History No change 768 10 0.0% 0.0% 124 0 0.0% Q2 2026 Aug 12, 2026
Covestor Ltd History No change 826 10 0.01% 0.01% 125 0 0.0% Q2 2026 Aug 07, 2026
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC History No change 757 9 0.0% 0.0% 126 0 0.0% Q2 2026 Aug 13, 2026
EverSource Wealth Advisors, LLC History No change 634 8 0.0% 0.0% 127 0 0.0% Q2 2026 Jul 24, 2026
ADIRONDACK TRUST CO History No change 549 7 0.0% 0.0% 128 0 0.0% Q2 2026 Jul 16, 2026
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM History No change 538 7 0.0% 0.0% 129 0 0.0% Q2 2026 Aug 24, 2026
Essential Partners LLC History No change 545 7 0.0% 0.0% 130 0 0.0% Q2 2026 Aug 10, 2026
SBI Securities Co., Ltd. History No change 528 6 0.0% 0.0% 131 0 0.0% Q2 2026 Jul 22, 2026
NFSG Corp History No change 500 6 0.0% 0.0% 132 0 0.0% Q2 2026 Aug 14, 2026
True Wealth Design, LLC History No change 402 5 0.0% 0.0% 133 0 0.0% Q2 2026 Jul 16, 2026
Farther Finance Advisors, LLC History No change 397 5 0.0% 0.0% 134 0 0.0% Q2 2026 Jul 17, 2026
FIFTH THIRD BANCORP History No change 335 4 0.0% 0.0% 135 0 0.0% Q2 2026 Aug 05, 2026
NATIONAL BANK OF CANADA /FI/ History No change 318 4 0.0% 0.0% 136 0 0.0% Q2 2026 Aug 10, 2026
Anchor Investment Management, LLC History No change 350 4 0.0% 0.0% 137 0 0.0% Q2 2026 Sep 15, 2026
Geneos Wealth Management Inc. History No change 333 4 0.0% 0.0% 138 0 0.0% Q2 2026 Aug 06, 2026
Parallel Advisors, LLC History No change 300 3 0.0% 0.0% 139 0 0.0% Q2 2026 Aug 05, 2026
ZIONS BANCORPORATION, NATIONAL ASSOCIATION /UT/ History No change 201 2 0.0% 0.0% 140 0 0.0% Q2 2026 Jul 31, 2026
PICTON MAHONEY ASSET MANAGEMENT History No change 174 2 0.0% 0.0% 141 0 0.0% Q2 2026 Aug 13, 2026
ROTHSCHILD INVESTMENT LLC History No change 125 1 0.0% 0.0% 142 0 0.0% Q2 2026 Aug 06, 2026
SIGNATUREFD, LLC History No change 114 1 0.0% 0.0% 143 0 0.0% Q2 2026 Jul 23, 2026
Optiver Holding B.V. History No change 122 1 0.0% 0.0% 144 0 0.0% Q2 2026 Aug 12, 2026
US BANCORP \DE\ History No change 42 0 — — — 0 0.0% Q2 2026 Aug 12, 2026
PNC FINANCIAL SERVICES GROUP, INC. History No change 74 0 — — — 0 0.0% Q2 2026 Aug 07, 2026
Clearstead Advisors, LLC History No change 5 0 — — — 0 0.0% Q2 2026 Aug 06, 2026
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO History No change 50 0 — — — 0 0.0% Q2 2026 Aug 12, 2026
Physician Wealth Advisors, Inc. History No change 44 0 — — — 0 0.0% Q2 2026 Jul 20, 2026
SJS Investment Consulting Inc. History No change 59 0 — — — 0 0.0% Q2 2026 Jul 22, 2026
Bare Financial Services, Inc History No change 76 0 — — — 0 0.0% Q2 2026 Jul 27, 2026
Smartleaf Asset Management LLC History No change 17 0 — — — 0 0.0% Q2 2026 Aug 12, 2026
JPL Wealth Management, LLC History No change 4 0 — — — 0 0.0% Q2 2026 Aug 13, 2026