PubMatic Ownership | Who Owns PubMatic?

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PubMatic Ownership Summary

PubMatic is owned by 25.90% institutional investors, 0.76% insiders, and 73.34% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 7.18% of PUBM shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.78% of its assets in PubMatic shares.

PUBM Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	PubMatic	25.90%	0.76%	73.34%
Sector	Technology Stocks	50.69%	12.56%	36.75%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock funding, inc. /de	3.39M	7.18%	$28.05M
Blackrock	3.40M	6.79%	$69.01M
Graham	2.83M	6.00%	$23.44M
Vanguard group	2.50M	5.30%	$20.69M
Wellington management group llp	1.47M	3.11%	$12.16M
Dimensional fund advisors lp	1.47M	3.11%	$12.14M
Renaissance	1.36M	2.87%	$11.22M
Royal bank of canada	1.09M	2.32%	$9.06M
Geode capital management	961.49K	2.04%	$7.96M
State street	927.23K	1.97%	$7.68M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Graham	2.83M	2.35%	$23.44M
Acuitas investments	146.49K	1.89%	$2.94M
P.a.w. capital	120.00K	1.72%	$993.60K
Roubaix capital	271.33K	1.05%	$2.25M
S squared	260.97K	0.82%	$2.16M
Leibman financial services	104.82K	0.66%	$867.94K
Manatuck hill partners	200.00K	0.55%	$1.66M
Diversified investment strategies	85.00K	0.46%	$703.80K
Pinnacle	138.82K	0.40%	$1.15M
Centerbook partners lp	748.46K	0.31%	$6.20M

Top Buyers

Holder	Shares	% Assets	Change
Centerbook partners lp	748.46K	0.31%	527.65K
Ubs group	422.63K	0.00%	303.48K
Roubaix capital	271.33K	1.05%	271.33K
S squared	260.97K	0.82%	260.97K
Two sigma investments, lp	384.90K	0.00%	228.88K

Top Sellers

Holder	Shares	% Assets	Change
Nixon capital	-	-	-628.75K
Nordea investment management ab	-	-	-346.05K
Gratus capital	-	-	-280.90K
Pacer advisors	-	-	-268.64K
Millennium management	122.72K	0.00%	-238.66K

New Positions

Holder	Shares	% Assets	Change	Value
Roubaix capital	271.33K	1.05%	271.33K	$2.25M
S squared	260.97K	0.82%	260.97K	$2.16M
Manatuck hill partners	200.00K	0.55%	200.00K	$1.66M
P.a.w. capital	120.00K	1.72%	120.00K	$993.60K
Counterpoint mutual funds	43.43K	0.03%	43.43K	$359.59K

Sold Out

Holder	Change
Nbc securities	-1.00
Principal securities	-1.00
Fortitude family office	-1.00
Ifp advisors	-2.00
Nelson, van denburg & campbell wealth management group	-9.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Sep 30, 2025	65	-57.24%	12,223,240	-49.95%	25	0.97%	28	-62.16%	24	-44.19%
Jun 30, 2025	161	-3.59%	25,873,720	-0.68%	54	1.89%	76	-	47	-16.07%
Mar 31, 2025	4	-97.70%	354,848	-98.65%	-	0.03%	2	-97.47%	2	-96.08%
Dec 31, 2024	77	-57.69%	13,260,563	-47.78%	27	1.01%	32	-62.79%	25	-50.98%
Sep 30, 2024	182	-12.08%	25,393,974	-0.62%	51	1.96%	86	-23.89%	51	6.25%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	1.27M	2.78%	-28.14K
Vanguard US Total Market Shares ETF	1.29M	2.67%	-
iShares Russell 2000 ETF	1.03M	2.25%	-
Vanguard Small Cap Index	494.28K	1.02%	1.80K
Vanguard Institutional Extnd Mkt Idx Tr	436.36K	0.96%	-201.28K
Fidelity Small Cap Index	418.94K	0.92%	14.98K
iShares Russell 2000 Value ETF	362.04K	0.79%	-
iShares Russell 2000 Growth ETF	342.44K	0.71%	-
Nuveen Quant Small Cap Equity R6	304.82K	0.67%	-
DFA US Targeted Value I	288.67K	0.63%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Dec 08, 2025	Goel Rajeev K.	CHIEF EXECUTIVE OFFICER	Sell	$396.70K
Nov 24, 2025	Goel Rajeev K.	CHIEF EXECUTIVE OFFICER	Sell	$381.96K
Nov 17, 2025	Gimbel Lisa	CHIEF ACCOUNTING OFFICER	Sell	$10.05K
Nov 06, 2025	Goel Rajeev K.	CHIEF EXECUTIVE OFFICER	Sell	$329.15K
Oct 27, 2025	Goel Rajeev K.	CHIEF EXECUTIVE OFFICER	Sell	$383.71K

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	-	15
2025 Q3	-	16
2025 Q2	-	18
2025 Q1	-	21
2024 Q4	-	28

PUBM Ownership FAQ

Who owns the most shares of PubMatic?

PubMatic’s largest shareholders are Blackrock funding, inc. /de (3.39M shares, 7.18%), Blackrock (3.4M shares, 6.79%), and Graham (2.83M shares, 6.00%). Together, they hold 19.97% of PubMatic’s total shares outstanding.

Does Blackrock own PubMatic?

Yes, BlackRock owns 6.79% of PubMatic, totaling 3.4M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 69.01M$. In the last quarter, BlackRock increased its holdings by 41.74K shares, a 1.24% change.

Who is PubMatic’s biggest shareholder by percentage of total assets invested?

Graham is PubMatic’s biggest shareholder by percentage of total assets invested, with 2.35% of its assets in 2.83M PubMatic shares, valued at 23.44M$.

Who is the top mutual fund holder of PubMatic shares?

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of PubMatic shares, with 2.78% of its total shares outstanding invested in 1.27M PubMatic shares.

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