Mirion Technologies (MIR) Institutional Ownership

$18.21 +0.60 (+3.41%)

As of 01:59 PM Eastern

Current Institutional Ownership Percentage: 78.51%
Number of Institutional Buyers (last 12 months): 268
Total Institutional Inflows (last 12 months): $2.13B

Number of Institutional Sellers (last 12 months): 116
Total Institutional Outflows (last 12 months): $1.45B

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MIR Institutional Buying and Selling by Quarter

Mirion Technologies Major Shareholders & Ownership History

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Reporting Date	Major Shareholder Name	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
5/19/2026	Bank of America Corp DE	1,355,298	$25.20M	0.0%	-0.3%	0.541%
5/19/2026	Janus Henderson Group PLC	4,043,089	$75.16M	0.0%	-12.0%	1.615%
5/19/2026	Altshuler Shaham Ltd	13,147	$244K	0.0%	+12.3%	0.005%
5/18/2026	Amundi	36,691	$682K	0.0%	+198.3%	0.015%
5/18/2026	California State Teachers Retirement System	274,096	$5.10M	0.0%	+22.2%	0.109%
5/18/2026	Royal Bank of Canada	1,961,404	$36.46M	0.0%	-8.7%	0.783%
5/18/2026	Empowered Funds LLC	26,950	$501K	0.0%	-90.3%	0.011%
5/16/2026	The Manufacturers Life Insurance Company	111,658	$2.08M	0.0%	-3.4%	0.045%
5/16/2026	Maverick Capital Ltd.	2,649,879	$49.26M	0.6%	N/A	1.058%
5/16/2026	Quantinno Capital Management LP	41,705	$775K	0.0%	+269.5%	0.017%
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5/16/2026	Lazard Asset Management LLC	322,421	$5.99M	0.0%	+125.4%	0.129%
5/15/2026	Rice Hall James & Associates LLC	196,899	$3.66M	0.2%	-1.5%	0.079%
5/15/2026	Themes Management Co LLC	38,837	$722K	0.4%	+57.0%	0.016%
5/15/2026	Entropy Technologies LP	38,507	$716K	0.0%	N/A	0.015%
5/14/2026	Gabelli Funds LLC	367,980	$6.84M	0.0%	-14.5%	0.147%
5/14/2026	Gamco Investors INC. ET AL	544,662	$10.13M	0.1%	+0.5%	0.217%
5/14/2026	Bank of Nova Scotia	380,186	$7.07M	0.0%	-2.8%	0.152%
5/14/2026	Gibbs Wealth Management	23,922	$445K	0.1%	N/A	0.010%
5/14/2026	Sei Investments Co.	458,359	$8.52M	0.0%	+0.4%	0.183%
5/14/2026	State of Wyoming	6,375	$119K	0.0%	-10.1%	0.003%
5/13/2026	Cetera Investment Advisers	24,978	$464K	0.0%	+26.7%	0.010%
5/13/2026	First Trust Advisors LP	146,993	$2.73M	0.0%	-57.8%	0.059%
5/8/2026	PNC Financial Services Group Inc.	21,485	$399K	0.0%	+17.6%	0.009%
5/8/2026	Madison Asset Management LLC	124,323	$2.31M	0.0%	+119.5%	0.050%
5/7/2026	Dimensional Fund Advisors LP	4,694,288	$87.24M	0.0%	+14.4%	1.874%
5/7/2026	KBC Group NV	153,925	$2.86M	0.0%	+1,907.1%	0.061%
5/7/2026	Swiss National Bank	465,900	$8.66M	0.0%	+0.4%	0.186%
5/6/2026	Jennison Associates LLC	942,696	$17.53M	0.0%	-5.0%	0.376%
5/6/2026	Assetmark Inc.	3,454	$64K	0.0%	+8,123.8%	0.001%
5/6/2026	Allspring Global Investments Holdings LLC	1,059,030	$19.76M	0.0%	+2.8%	0.423%
5/5/2026	Bastion Asset Management Inc.	389,158	$7.29M	2.2%	N/A	0.155%
5/5/2026	Bank of New York Mellon Corp	4,536,732	$84.34M	0.0%	+47.4%	1.811%
5/5/2026	Illinois Municipal Retirement Fund	126,334	$2.35M	0.0%	-7.9%	0.050%
5/5/2026	Sanctuary Advisors LLC	29,619	$551K	0.0%	-1.9%	0.012%
5/5/2026	Maryland State Retirement & Pension System	35,626	$662K	0.0%	-1.8%	0.014%
5/4/2026	Emerald Mutual Fund Advisers Trust	873,466	$16.24M	0.8%	+24.0%	0.349%
5/4/2026	Emerald Advisers LLC	1,381,574	$25.68M	0.8%	+21.5%	0.551%
5/4/2026	Principal Financial Group Inc.	1,196,049	$22.24M	0.0%	-30.0%	0.477%
5/4/2026	Schwartz Investment Counsel Inc.	854,300	$15.88M	0.6%	+7.6%	0.341%
5/1/2026	Commonwealth of Pennsylvania Public School Empls Retrmt SYS	60,504	$1.13M	0.0%	-1.4%	0.024%
Goldman Sachs just told you what to buy (most people missed it) (Ad) Goldman Sachs just revealed that 40% of AI data centers will be crippled by electricity shortages by 2027 - not chips, not funding, but power. Demand is growing 15% per year and the grid can't keep up. One small company makes the exact equipment these data centers need. They're sitting on $1.5 billion in orders, their hardware is already inside Musk's Colossus, and the stock still trades like a name nobody's heard of. Analyst Dylan Jovine is releasing the ticker for free. See the stock positioned to solve AI's biggest power crisis
5/1/2026	Fifth Third Bancorp	227,118	$4.22M	0.0%	+20,016.7%	0.091%
5/1/2026	Kornitzer Capital Management Inc. KS	174,665	$3.25M	0.1%	N/A	0.070%
4/30/2026	Oregon Public Employees Retirement Fund	55,900	$1.04M	0.0%	-1.4%	0.022%
4/29/2026	Swedbank AB	3,159,950	$58.74M	0.1%	-7.0%	1.261%
4/28/2026	Marietta Investment Partners LLC	14,833	$276K	0.1%	-25.7%	0.006%
4/28/2026	Stephens Investment Management Group LLC	1,374,876	$25.56M	0.4%	+69.7%	0.549%
4/27/2026	New York State Teachers Retirement System	89,717	$1.67M	0.0%	-8.3%	0.036%
4/27/2026	Elevation Point Wealth Partners LLC	15,890	$295K	0.0%	N/A	0.006%
4/25/2026	Strs Ohio	15,000	$279K	0.0%	-27.5%	0.006%
4/25/2026	Keybank National Association OH	13,038	$242K	0.0%	-4.8%	0.005%
4/24/2026	Conestoga Capital Advisors LLC	1,831,019	$34.04M	0.7%	-5.6%	0.731%
4/24/2026	Peregrine Capital Management LLC	462,383	$8.60M	0.3%	+14.7%	0.185%
4/22/2026	Janney Montgomery Scott LLC	21,039	$391K	0.0%	-5.9%	0.008%
4/22/2026	Pictet Asset Management Holding SA	35,491	$660K	0.0%	+6.3%	0.014%
4/22/2026	Sterling Capital Management LLC	38,236	$711K	0.0%	-44.4%	0.015%
4/21/2026	Louisiana State Employees Retirement System	108,500	$2.02M	0.0%	N/A	0.043%
3/17/2026	Rockefeller Capital Management L.P.	1,139,037	$26.68M	0.0%	+17.2%	0.455%
3/10/2026	Montanaro Asset Management Ltd	255,400	$5.98M	1.7%	+48.8%	0.102%
3/9/2026	Corient Private Wealth LLC	14,510	$339K	0.0%	+16.9%	0.006%
2/24/2026	Pacer Advisors Inc.	80,127	$1.88M	0.0%	N/A	0.032%
2/19/2026	T. Rowe Price Investment Management Inc.	15,112,855	$353.94M	0.2%	-29.9%	5.955%
2/19/2026	Invesco Ltd.	3,101,120	$72.63M	0.0%	+12.5%	1.222%
2/19/2026	Corient Private Wealth LLC	14,510	$339K	0.0%	+16.9%	0.006%
2/18/2026	Vident Advisory LLC	14,128	$331K	0.0%	N/A	0.006%
2/18/2026	State of Tennessee Department of Treasury	74,501	$1.85M	0.0%	+29.7%	0.029%
2/18/2026	NewEdge Advisors LLC	3,251	$76K	0.0%	-29.8%	0.001%
2/18/2026	Empowered Funds LLC	278,820	$6.53M	0.1%	-4.2%	0.110%
2/18/2026	XTX Topco Ltd	125,020	$2.93M	0.1%	N/A	0.049%
2/18/2026	Zacks Investment Management	402,207	$9.42M	0.1%	-1.2%	0.158%
2/18/2026	VARCOV Co.	10,838	$254K	0.1%	N/A	0.004%
2/18/2026	Wellington Management Group LLP	248,775	$5.83M	0.0%	N/A	0.098%
2/18/2026	Toronto Dominion Bank	17,746	$416K	0.0%	N/A	0.007%
2/18/2026	Twinbeech Capital LP	57,100	$1.34M	0.1%	N/A	0.022%
2/18/2026	Janus Henderson Group PLC	4,596,949	$107.66M	0.0%	-40.0%	1.811%
2/18/2026	Gotham Asset Management LLC	93,039	$2.18M	0.0%	N/A	0.037%
2/18/2026	Bamco Inc. NY	650,000	$15.22M	0.0%	+30.0%	0.256%
2/18/2026	Boothbay Fund Management LLC	173,855	$4.07M	0.1%	+500.5%	0.069%
2/18/2026	Ardsley Advisory Partners LP	325,000	$7.61M	0.8%	-1.0%	0.128%
2/18/2026	Alta Park Capital LP	562,522	$13.17M	1.6%	-8.0%	0.222%
2/18/2026	Altshuler Shaham Ltd	11,704	$274K	0.0%	+5.1%	0.005%
2/17/2026	Schonfeld Strategic Advisors LLC	9,198	$215K	0.0%	N/A	0.004%
2/17/2026	Integrated Advisors Network LLC	8,957	$210K	0.0%	-6.1%	0.004%
2/17/2026	AQR Capital Management LLC	277,719	$6.50M	0.0%	-5.0%	0.109%
2/17/2026	Troluce Capital Advisors LLC	850,000	$19.91M	12.6%	N/A	0.335%
2/17/2026	Cetera Investment Advisers	19,707	$462K	0.0%	+10.3%	0.008%
2/17/2026	Lazard Asset Management LLC	143,063	$3.35M	0.0%	-52.3%	0.056%
2/17/2026	Sandler Capital Management	15,194	$356K	0.1%	-80.1%	0.006%
2/17/2026	ArrowMark Colorado Holdings LLC	716,065	$16.77M	0.4%	-11.5%	0.282%
2/17/2026	TCW Group Inc.	2,452,579	$57.44M	0.4%	N/A	0.966%
2/17/2026	Amundi	12,300	$288K	0.0%	N/A	0.005%
Goldman Sachs just told you what to buy (most people missed it) (Ad) Goldman Sachs just revealed that 40% of AI data centers will be crippled by electricity shortages by 2027 - not chips, not funding, but power. Demand is growing 15% per year and the grid can't keep up. One small company makes the exact equipment these data centers need. They're sitting on $1.5 billion in orders, their hardware is already inside Musk's Colossus, and the stock still trades like a name nobody's heard of. Analyst Dylan Jovine is releasing the ticker for free. See the stock positioned to solve AI's biggest power crisis
2/17/2026	FIL Ltd	100,000	$2.34M	0.0%	-82.2%	0.039%
2/17/2026	Laurion Capital Management LP	28,188	$660K	0.0%	N/A	0.011%
2/17/2026	T. Rowe Price Investment Management Inc.	2,329,002	$54.55M	0.1%	-89.2%	0.918%
2/17/2026	Weiss Asset Management LP	9,720	$228K	0.0%	N/A	0.004%
2/17/2026	Ghisallo Capital Management LLC	250,000	$5.86M	0.3%	-67.7%	0.099%
2/17/2026	Public Employees Retirement System of Ohio	5,226	$122K	0.0%	+670.8%	0.002%
2/17/2026	Corsair Capital Management L.P.	982,419	$23.01M	3.6%	-6.1%	0.387%
2/17/2026	California State Teachers Retirement System	224,345	$5.25M	0.0%	+13.3%	0.088%
2/17/2026	Russell Investments Group Ltd.	22,080	$517K	0.0%	+11.3%	0.009%
2/17/2026	Maryland State Retirement & Pension System	36,281	$850K	0.0%	+2.4%	0.014%

MIR Institutional Ownership - Frequently Asked Questions

During the previous two years, 368 institutional investors and hedge funds held shares of Mirion Technologies. The most heavily invested institutionals were Vanguard Group Inc. ($710.71M), Tudor Investment Corp ET AL ($407.05M), T. Rowe Price Investment Management Inc. ($353.94M), State Street Corp ($215.44M), Cooperman Leon G ($195.00M), Geode Capital Management LLC ($135.55M), and Goldman Sachs Group Inc. ($122.92M).Learn more on Mirion Technologies' institutional investors.

78.51% of Mirion Technologies' stock is owned by institutional investors. Learn more on MIR's institutional investor holdings.

Of the 344 institutional investors that purchased Mirion Technologies' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Tudor Investment Corp ET AL ($17.59M), Vanguard Group Inc. ($6.88M), Brown Advisory Inc. ($5.56M), Arrowstreet Capital Limited Partnership ($4.20M), Artemis Investment Management LLP ($4.02M), Two Creeks Capital Management LP ($3.60M), and Bank of New York Mellon Corp ($3.29M).

Institutional investors have bought a total of 93,989,098 shares in the last 24 months. This purchase volume represents approximately $2.13B in transactions.

Of the 116 institutional investors that sold Mirion Technologies' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: T. Rowe Price Investment Management Inc. ($25.69M), Janus Henderson Group PLC ($3.62M), Swedbank AB ($3.51M), Maverick Capital Ltd. ($3.09M), Alyeska Investment Group L.P. ($2.92M), Dimensional Fund Advisors LP ($2.84M), and Millennium Management LLC ($2.36M).

Institutional investors have sold a total of 63,505,663 shares in the last 24 months. This volume of shares sold represents approximately $1.45B in transactions.

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This page (NYSE:MIR) was last updated on 5/22/2026 by MarketBeat.com Staff.

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Mirion Technologies (MIR) Institutional Ownership

MIR Institutional Buying and Selling by Quarter

Mirion Technologies Major Shareholders & Ownership History

MIR Institutional Ownership - Frequently Asked Questions

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Mirion Technologies (MIR) Institutional Ownership

Institutional Ownership Changes (13F Filings) for Mirion Technologies (NYSE:MIR)

MIR Institutional Buying and Selling by Quarter

Mirion Technologies Major Shareholders & Ownership History

MIR Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of MIR shares?

What percentage of Mirion Technologies' stock is owned by institutional investors?

Which institutional investors have been buying Mirion Technologies' stock?

How much institutional buying is happening at Mirion Technologies?

Which of Mirion Technologies' major shareholders have been selling company stock?

How much institutional selling is happening at Mirion Technologies?

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