Avantor Ownership | Who Owns Avantor?

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Avantor Ownership Summary

Avantor is owned by 56.27% institutional investors, 1.38% insiders, and 42.35% retail investors. Dodge & cox is the largest institutional shareholder, holding 17.28% of AVTR shares. Dodge & Cox Stock I is the top mutual fund, with 10.98% of its assets in Avantor shares.

AVTR Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Avantor	56.27%	1.38%	42.35%
Sector	Healthcare Stocks	232.64%	10.66%	-143.30%
Industry	Medical Instruments & Supplies Stocks	32.32%	13.56%	54.11%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Dodge & cox	117.75M	17.28%	$1.47B
Vanguard group	64.90M	9.52%	$743.81M
Blackrock funding, inc. /de	59.60M	8.74%	$682.98M
Blackrock	44.01M	6.49%	$932.96M
Barrow hanley mewhinney & strauss	33.29M	4.88%	$381.47M
T. rowe price investment management	32.93M	4.83%	$410.94M
Greenhaven associates	22.59M	3.33%	$177.14M
State street	20.37M	2.99%	$254.16M
Engine capital management, lp	19.72M	2.89%	$246.11M
Janus henderson group	18.14M	2.67%	$382.13M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
New mountain capital	14.00M	100.00%	$174.72M
Kinney asset management	1.84M	34.31%	$23.03M
Engine capital management, lp	19.72M	29.22%	$246.11M
Brickwood asset management llp	3.18M	25.39%	$36.49M
Belfer management	23.62K	4.74%	$270.69K
Clarkston capital partners	15.02M	4.04%	$187.45M
Southeastern asset management inc/tn/	5.15M	3.28%	$64.26M
Greenhaven associates	22.59M	2.92%	$177.14M
Broyhill asset management	277.53K	2.80%	$3.18M
Arvin capital management lp	983.10K	2.71%	$13.23M

Top Buyers

Holder	Shares	% Assets	Change
Engine capital management, lp	19.72M	29.22%	14.22M
London co of virginia	12.79M	0.88%	12.79M
Morgan stanley	17.47M	0.01%	11.22M
Norges bank	6.40M	0.01%	6.40M
Millennium management	5.31M	0.05%	5.31M

Top Sellers

Holder	Shares	% Assets	Change
T. rowe price investment management	32.93M	0.25%	-23.57M
Ccla investment management	-	-	-5.85M
Van lanschot kempen investment management	-	-	-5.51M
Durable capital partners lp	-	-	-4.81M
1832 asset management	-	-	-4.51M

New Positions

Holder	Shares	% Assets	Change	Value
London co of virginia	12.79M	0.88%	12.79M	$159.67M
Norges bank	6.40M	0.01%	6.40M	$73.32M
Southeastern asset management inc/tn/	5.15M	3.28%	5.15M	$64.26M
Balyasny asset management	3.19M	0.06%	3.19M	$42.87M
Fuller & thaler asset management	1.62M	0.06%	1.62M	$18.59M

Sold Out

Holder	Change
Atticus wealth management	-1.00
Rakuten securities	-1.00
Tfo-tdc	-1.00
Tfc financial management	-3.00
Cape investment advisory	-5.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
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%
Mar 31, 2025	14	-97.24%	21,523,236	-96.85%	3	0.03%	6	-97.40%	4	-98.08%
Dec 31, 2024	496	-8.66%	682,494,306	0.86%	100	1.01%	222	-22.65%	203	20.83%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Dodge & Cox Stock I	74.87M	10.98%	-
iShares Core S&P Mid-Cap ETF	22.60M	3.34%	17.98K
Vanguard Total Stock Mkt Idx Inv	21.63M	3.17%	39.55K
Vanguard US Total Market Shares ETF	20.46M	3.00%	-1.03M
Vanguard Health Care Inv	18.80M	2.76%	18.80M
Vanguard Small Cap Index	15.49M	2.27%	41.45K
T. Rowe Price US Mid-Cap Growth Equity	15.41M	2.26%	139.40K
UBS: Global Equity	15.16M	2.23%	-
T. Rowe Price Mid-Cap Growth	13.35M	1.96%	-2.06M
T. Rowe Price Capital Appreciation	12.06M	1.77%	-5.40M

Recent Insider Transactions

Date	Name	Role	Activity	Value
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
Dec 05, 2025	MEHRA SANJEEV K	-	Buy	$3.88M
Nov 17, 2025	Ligner Emmanuel	President and CEO	Buy	$993.13K

Insider Transactions Trends

Date	Buy	Sell
2026 Q1	3	-
2025 Q4	3	-
2025 Q3	1	1
2025 Q2	7	-
2025 Q1	-	4

AVTR Ownership FAQ

Who Owns Avantor?

Avantor shareholders are primarily institutional investors at 56.27%, followed by 1.38% insiders and 42.35% retail investors. The average institutional ownership in Avantor's industry, Medical Instruments & Supplies Stocks, is 32.32%, which Avantor exceeds.

Who owns the most shares of Avantor?

Avantor’s largest shareholders are Dodge & cox (117.75M shares, 17.28%), Vanguard group (64.9M shares, 9.52%), and Blackrock funding, inc. /de (59.6M shares, 8.74%). Together, they hold 35.54% 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 174.72M$.

Who is the top mutual fund holder of Avantor shares?

Dodge & Cox Stock I is the top mutual fund holder of Avantor shares, with 10.98% of its total shares outstanding invested in 74.87M Avantor shares.

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