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PUBM · PubMatic, Inc. · Holdings

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$17.24 +0.07 (+0.41%) At close · Oct 23
Russell 2000 member Rebalance outlook locked
Market Cap
$785.28M
Shares
45.55M
Volume · Oct 23 297.54K Avg daily vol (3M) 692.68K

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 → See every holder of PUBM: 13F, 13D and 13G, insiders and funds →
Recent SEC filings are still being reconciled. Holder totals and changes may be incomplete until processing catches up.
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.
Holders: 158
Total Value: $423,990,399
Total Shares: 32,264,498
Showing 1–100 of 169 holdings by value · page 1 of 2

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 153 13F filers
Top Holder
10.5%
Sep 2023 → Jun 2026 · range 10.5% – 19.9%
of institutional value
Top 5
35.4%
Sep 2023 → Jun 2026 · range 35.4% – 55.4%
of institutional value
Top 10
53.0%
Sep 2023 → Jun 2026 · range 53.0% – 72.1%
of institutional value
HHI
412
Sep 2023 → Jun 2026 · range 412 – 857
Broadly held

Who Holds PUBM

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 153 filers, like-for-like change +5.7%; actively managed books +4.7%; index-like books +8.3%.

Holder type Share Filers Change
Registered adviser 51.0% 80 +6.3%
Exempt adviser 0.0% 1 -80.4%
Adviser 1.6% 4 +22.2%
Bank 8.7% 15 +5.5%
Broker-dealer 0.2% 1 +13.4%
Benefit plan 0.4% 4 +4.8%
Non-US 0.6% 6 +4.7%
Holding company 12.6% 6 +1.5%
Insurer 0.0% 0 —
Unknown 24.9% 36 +6.5%

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Excluded 2 holders with no observed 2026-06-30 13F.

Conviction and Crowding

153 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders
2
1.31% of filers hold it in their top 10
Mar 31, 2026: 1
Holders above 5%
1
median weight 0.001%
Mar 31, 2026: 0
Crowding
—
the issuer has more than one class of common stock, so its count is the total across classes
Private-fund advisers
—
of shares outstanding
Institutional ownership
—
the issuer has more than one class of common stock, so its count is the total across classes
Top 10 holders
55.0%
of 13F shares, Herfindahl 0.044
Active holders
+4.7%
like-for-like share change of active filers
5% stakes on record
5
0 13D, 5 13G (2 institutional, 1 passive, 2 exempt)
How long holders have held it value-weighted 11.4 quarters
Under 1 year 23.4% 1 to 3 years 30.5% 3 years or more 46.2% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $744,812 (1 buying, 0 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost
$13.56
estimated per share
Mar 31, 2026: $13.66
Quarter-end price
$13.12
implied by 13F values
Estimated gain or loss
-3.2%
price against the estimated cost
Estimated at a loss
49.0%
of costed 13F value

Estimated cost covers 71.2% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shared Holders

Companies PUBM's active holders also own, quarter ended Jun 30, 2026
# Company Shared holders
1 DIS Walt Disney Co 3
2 CVX Chevron Corp 3
3 AAPL Apple Inc. 3
4 MSFT Microsoft Corp 3
5 GOOGL Alphabet Inc. 3

Shareholder Targets

13F filers that own its peers but not PUBM, quarter ended Jun 30, 2026

Found through its holder-overlap peers: DIS, CVX, AAPL, MSFT, GOOGL. 6,790 filers in all.

# Filer In peers
1 NORGES BANK Non-US, Index-like $154,613,302,831 5 held
2 Berkshire Hathaway Inc Insurer, Concentrated $117,700,527,192 3 held
3 Capital Research Global Investors Adviser, Diversified active $92,271,408,431 4 held
4 Capital World Investors Adviser, Diversified active $79,522,155,674 5 held
5 WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active $60,431,554,987 5 held
6 Amundi Holding company, Index-like $60,110,106,594 5 held
7 Capital International Investors Adviser, Diversified active $55,420,960,853 4 held
8 Fisher Asset Management, LLC Adviser, Diversified active $44,251,053,709 5 held
9 Swiss National Bank Unknown, Index-like $30,359,100,520 4 held
10 Mitsubishi UFJ Asset Management Co., Ltd. Unknown, Index-like $29,833,763,103 5 held

Fund Ownership of PUBM by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 11.33% of shares outstanding.

Fund type Of shares outstanding Shares
Index funds 2.91% 1,326,151
Index ETFs 8.42% 3,834,811
Active ETFs 1.35% 613,864
Active funds 5.26% 2,394,501
Unclassified 1.37% 622,797
All registered funds 19.30% 8,792,124
How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Holder type: Registered adviser 83 Exempt adviser 2 Adviser 4 Bank 15 Broker-dealer 1 Benefit plan 4 Non-US 6 Holding company 6 Unknown 37
Showing 100 of 169
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Graham Holdings Co $44,593,620 10.52% 3,398,904
BlackRock, Inc. $43,027,427 10.15% 3,279,530
VANGUARD CAPITAL MANAGEMENT LLC $21,796,413 5.14% 1,661,312
ACADIAN ASSET MANAGEMENT LLC $20,649,712 4.87% 1,573,911
DIMENSIONAL FUND ADVISORS LP $19,563,505 4.61% 1,491,121
RENAISSANCE TECHNOLOGIES LLC $18,644,162 4.40% 1,421,049
Whitefort Capital Management, LP $14,571,806 3.44% 1,110,656
Walleye Trading LLC $14,300,800 3.37% 1,090,000
GEODE CAPITAL MANAGEMENT, LLC $13,012,415 3.07% 991,800
VANGUARD PORTFOLIO MANAGEMENT LLC $12,431,829 2.93% 947,548
JACOBS LEVY EQUITY MANAGEMENT, INC $11,322,507 2.67% 862,996
STATE STREET CORP $11,206,408 2.64% 854,147
S SQUARED TECHNOLOGY, LLC $9,815,058 2.31% 748,099
Simcoe Capital LLC $9,104,007 2.15% 693,903
HIGHBRIDGE CAPITAL MANAGEMENT LLC $8,457,060 1.99% 644,593
AMERICAN CENTURY COMPANIES INC $8,424,037 1.99% 642,076
TWO SIGMA INVESTMENTS, LP $8,371,898 1.97% 638,102
ROYAL BANK OF CANADA $8,125,083 1.92% 619,290
Nuveen, LLC $6,090,133 1.44% 464,187
CITADEL ADVISORS LLC $5,443,225 1.28% 414,880
CenterBook Partners LP $5,431,456 1.28% 413,983
Trexquant Investment LP $5,018,728 1.18% 382,525
NORTHERN TRUST CORP $4,567,517 1.08% 348,134
CHARLES SCHWAB INVESTMENT MANAGEMENT INC $3,983,546 0.94% 303,624
PANAGORA ASSET MANAGEMENT INC $3,775,083 0.89% 287,735
AQR CAPITAL MANAGEMENT LLC $3,758,063 0.89% 286,438
MORGAN STANLEY $3,729,436 0.88% 284,256
Quantinno Capital Management LP $3,275,906 0.77% 249,688
VANGUARD FIDUCIARY TRUST CO $3,157,682 0.74% 240,677
GOLDMAN SACHS GROUP INC $3,156,383 0.74% 240,578
JPMORGAN CHASE & CO $2,951,369 0.70% 224,952
FRANKLIN RESOURCES INC $2,929,905 0.69% 223,316
JANE STREET GROUP, LLC $2,612,598 0.62% 199,131
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $2,565,786 0.61% 195,563
UBS Group AG $2,440,752 0.58% 186,033
SUSQUEHANNA INTERNATIONAL GROUP, LLP $2,393,704 0.56% 182,447
BOOTHBAY FUND MANAGEMENT, LLC $2,382,788 0.56% 181,615
BRIDGEWAY CAPITAL MANAGEMENT, LLC $2,299,936 0.54% 175,300
BANK OF AMERICA CORP /DE/ $2,282,302 0.54% 173,956
Pinnacle Holdings, LLC $2,076,240 0.49% 158,250
P.A.W. CAPITAL CORP $1,968,000 0.46% 150,000
Diversified Investment Strategies, LLC $1,836,800 0.43% 140,000
CITADEL ADVISORS LLC $1,801,376 0.42% 137,300
AMERIPRISE FINANCIAL INC $1,758,093 0.41% 134,001
SUSQUEHANNA INTERNATIONAL GROUP, LLP $1,687,232 0.40% 128,600
Bank of New York Mellon Corp $1,594,603 0.38% 121,540
Walleye Trading LLC $1,498,304 0.35% 114,200
Invesco Ltd. $1,354,402 0.32% 103,232
Jump Financial, LLC $1,320,029 0.31% 100,612
SUSQUEHANNA INTERNATIONAL GROUP, LLP $1,263,456 0.30% 96,300
DEUTSCHE BANK AG\ $1,229,553 0.29% 93,716
CITADEL ADVISORS LLC $1,221,472 0.29% 93,100
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
VICTORY CAPITAL MANAGEMENT INC $1,113,350 0.26% 84,859
Russell Investments Group, Ltd. $1,097,194 0.26% 83,628
Point72 Asset Management, L.P. $1,041,229 0.25% 79,362
GROUP ONE TRADING LLC $949,953 0.22% 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
SIMPLEX TRADING, LLC $774,749 0.18% 59,051
BARCLAYS PLC $774,289 0.18% 59,016
CANADA PENSION PLAN INVESTMENT BOARD $767,520 0.18% 58,500
HSBC HOLDINGS PLC $752,012 0.18% 57,318
Creative Planning $749,715 0.18% 57,143
Avestar Capital, LLC $721,600 0.17% 55,000
VOYA INVESTMENT MANAGEMENT LLC $696,475 0.16% 53,085
IMC-Chicago, LLC $657,062 0.15% 50,081
RHUMBLINE ADVISERS $650,279 0.15% 49,564
Inspire Investing, LLC $639,798 0.15% 34,159
State of Wyoming $595,713 0.14% 45,405
D. E. Shaw & Co., Inc. $581,478 0.14% 44,320
RAYMOND JAMES FINANCIAL INC $562,847 0.13% 42,900
STRS OHIO $498,560 0.12% 38,000
Y-Intercept (Hong Kong) Ltd $480,536 0.11% 25,656
FULLER & THALER ASSET MANAGEMENT, INC. $478,105 0.11% 36,441
ALLIANCEBERNSTEIN L.P. $474,944 0.11% 36,200
XTX Topco Ltd $439,533 0.10% 33,501
WELLS FARGO & COMPANY/MN $431,699 0.10% 32,904
PRICE T ROWE ASSOCIATES INC /MD/ $420,364 0.10% 32,040
Sterling Capital Management LLC $401,346 0.09% 21,428
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
MERCER GLOBAL ADVISORS INC /ADV $319,878 0.08% 24,381
Cambria Investment Management, L.P. $299,503 0.07% 22,828
Cornerstone Investment Partners, LLC $296,905 0.07% 22,630
GWN SECURITIES INC. $290,201 0.07% 22,119
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC $282,748 0.07% 15,096
Caption Management, LLC $274,864 0.06% 20,950
CITIGROUP INC $272,474 0.06% 20,768
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
WINTON GROUP Ltd $221,728 0.05% 16,900

Showing the top 100 of 169 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.

Key facts CIK 1422930 CUSIP 74467Q103 13F (30d) 21 filings 21 filers Visit website Investor relations