Avantor Ownership | Who Owns Avantor?

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Avantor Ownership Summary

Avantor is owned by 103.81% institutional investors, 1.50% insiders. Dodge & cox is the largest institutional shareholder, holding 17.70% of AVTR shares. Dodge & Cox Stock I is the top mutual fund, with 10.97% of its assets in Avantor shares.

AVTR Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Avantor	103.81%	1.50%	-5.32%
Sector	Healthcare Stocks	245.07%	12.10%	-157.17%
Industry	Medical Instruments & Supplies Stocks	63.80%	11.77%	24.43%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Dodge & cox	120.02M	17.70%	$1.19B
Blackrock funding, inc. /de	70.28M	10.37%	$695.78M
Vanguard group	64.90M	9.52%	$743.81M
Blackrock	44.01M	6.49%	$932.96M
Vanguard capital management	30.80M	4.54%	$304.95M
Greenhaven associates	24.64M	3.63%	$243.91M
State street	21.57M	3.18%	$213.57M
Dimensional fund advisors lp	20.41M	3.01%	$202.09M
Engine capital management, lp	19.86M	2.93%	$196.62M
Barrow hanley mewhinney & strauss	19.74M	2.91%	$195.39M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
New mountain capital	14.00M	100.00%	$138.60M
Kinney asset management	1.84M	34.31%	$23.03M
Brickwood asset management llp	4.60M	32.70%	$45.52M
Engine capital management, lp	19.86M	19.13%	$196.62M
Western standard	2.11M	7.07%	$20.89M
Clarkston capital partners	6.79M	5.68%	$67.21M
Kettle hill capital management	1.86M	4.53%	$18.42M
Belfer management	22.32K	3.66%	$220.94K
Greenhaven associates	24.64M	2.82%	$243.91M
Arvin capital management lp	983.10K	2.71%	$13.23M

Top Buyers

Holder	Shares	% Assets	Change
Marshall wace, llp	13.13M	0.10%	9.69M
Vaughan nelson investment management	7.39M	0.65%	7.39M
Aqr capital management	11.63M	0.04%	6.76M
Norges bank	6.09M	0.01%	6.09M
Sixth street partners management company	5.82M	0.01%	5.82M

Top Sellers

Holder	Shares	% Assets	Change
Wellington management group llp	-	-	-24.22M
T. rowe price investment management	-	-	-14.79M
Ccla investment management	-	-	-5.85M
Van lanschot kempen investment management	-	-	-5.51M
Jane street group	-	-	-4.97M

New Positions

Holder	Shares	% Assets	Change	Value
Vaughan nelson investment management	7.39M	0.65%	7.39M	$73.19M
Norges bank	6.09M	0.01%	6.09M	$60.31M
Sixth street partners management company	5.82M	0.01%	5.82M	$57.63M
Balyasny asset management	3.19M	0.06%	3.19M	$42.87M
Western standard	2.11M	7.07%	2.11M	$20.89M

Sold Out

Holder	Change
Atticus wealth management	-1.00
Rakuten securities	-1.00
Tfo-tdc	-1.00
Tfc financial management	-3.00
Vermillion wealth management	-3.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2026	464	4.50%	703,862,771	4.21%	103	1.05%	287	12.11%	107	-16.41%
Mar 31, 2026	275	-37.36%	296,190,503	-57.33%	43	0.42%	151	-14.69%	81	-58.46%
Dec 31, 2025	307	-36.57%	383,603,816	-43.48%	56	0.57%	109	-51.12%	149	-22.80%
Sep 30, 2025	460	-12.71%	673,359,407	-5.32%	98	0.91%	212	-30.72%	184	26.90%
Jun 30, 2025	516	2.79%	711,723,160	4.21%	104	1.04%	300	14.94%	143	-15.38%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Dodge & Cox Stock I	74.87M	10.97%	-
iShares Core S&P Mid-Cap ETF	23.45M	3.47%	721.00
Vanguard MStar Total Stk Mkt Idx Invest	21.75M	3.22%	70.55K
Vanguard Morn Total Stk Mkt Idx Investor	21.68M	3.21%	-61.11K
Vanguard Total Stock Mkt Idx Inv	21.68M	3.18%	-61.11K
Vanguard US Total Market Shares ETF	20.46M	3.00%	-1.03M
Vanguard Health Care Inv	20.48M	3.00%	1.68M
Vanguard Small Cap Index	15.69M	2.32%	56.77K
UBS: Global Equity	15.16M	2.23%	-
Bridge Builder Large Cap Value	12.36M	1.83%	1.45M

Recent Insider Transactions

Date	Name	Role	Activity	Value
May 08, 2026	LUCIER GREGORY T	-	Buy	$83.20K
May 01, 2026	Dingemans Simon	-	Buy	$203.50K
Mar 10, 2026	MEHRA SANJEEV K	-	Buy	$1.00M
Feb 19, 2026	LUCIER GREGORY T	-	Buy	$458.00K
Feb 12, 2026	SUMME GREGORY L	-	Buy	$940.00K

Insider Transactions Trends

Date	Buy	Sell
2026 Q3	-	-
2026 Q2	2	-
2026 Q1	3	-
2025 Q4	3	-
2025 Q3	1	1

AVTR Ownership FAQ

Who Owns Avantor?

Avantor shareholders are primarily institutional investors at 103.81%, followed by 1.50% insiders and -5.31% retail investors. The average institutional ownership in Avantor's industry, Medical Instruments & Supplies Stocks, is 63.80%, which Avantor exceeds.

Who owns the most shares of Avantor?

Avantor’s largest shareholders are Dodge & cox (120.02M shares, 17.70%), Blackrock funding, inc. /de (70.28M shares, 10.37%), and Vanguard group (64.9M shares, 9.52%). Together, they hold 37.59% of Avantor’s total shares outstanding.

Does Blackrock own Avantor?

Yes, BlackRock owns 6.49% of Avantor, totaling 44.01M shares as of Jun 2024. This represents 0.02% of BlackRock's total assets, with a market value of 932.96M$. In the last quarter, BlackRock increased its holdings by 1.25M shares, a 2.91% change.

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

New mountain capital is Avantor’s biggest shareholder by percentage of total assets invested, with 100.00% of its assets in 14M Avantor shares, valued at 138.6M$.

Who is the top mutual fund holder of Avantor shares?

Dodge & Cox Stock I is the top mutual fund holder of Avantor shares, with 10.97% of its total shares outstanding invested in 74.87M Avantor shares.

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