MIRMirion Technologies, Inc.

$16.63-32% 1Y

Who owns MIR

345 institutions reported holding MIR for 2026Q2, together 107% of the company, fewer than the 358 a quarter earlier.

345

Institutions reporting a position · as of 2026Q2 · down from 358 the quarter before

Shares held by institutions
261.5M

Shares held by institutions · 107% of the company · long US equity positions only, as reported on Form 13F

Reported value
$4.69B

Reported value · at Jun 30, 2026 prices, not today's

Top 5 holders
42%

Top 5 holders · of the whole company, between five filers

Details›
Reporting quarter2026-06-30
2026Q2
Quarters on record
20
New positions
58
Positions exited
71
Added to
128
Reduced
108
Top 10 holdersof the company
58%
Shares sold shortsettled Sep 15, 2026
39.7M
Short interestof shares outstanding
16%
Days to coverat the average daily volume
10.7
Change in the short positionsince the Aug 31, 2026 count
+11%
Institutional ownership by quarter, 2021Q3 to 2026Q2
QuarterFilersSharesReported value
2026Q2345261.5M$4.69B
2026Q1358253.0M$4.71B
2025Q4361251.4M$5.89B
2025Q3338254.4M$5.92B
2025Q2297206.7M$4.45B
2025Q1228185.1M$2.68B
2024Q4221193.7M$3.38B
2024Q3173204.8M$2.27B
2024Q2152197.0M$2.12B
2024Q1142188.1M$2.14B
2023Q4124187.6M$1.92B
2023Q3127187.9M$1.40B
2023Q2124181.4M$1.53B
2023Q1115169.9M$1.45B
2022Q4119153.3M$1.01B
2022Q3120170.6M$1.27B
Largest reported holders, 2026Q2
HolderShares% of companyValue
BlackRock Inc.38.3M16%$686M
VANGUARD GROUP INC30.9M13%$553M
T. Rowe Price Investment Management, Inc.14.3M5.8%$256M
GOLDMAN SACHS GROUP INC10.4M4.3%$187M
STATE STREET CORP9.9M4.1%$178M
Alyeska Investment Group, L.P.9.5M3.9%$171M
COOPERMAN LEON G8.4M3.4%$150M
FMR LLC7.3M3.0%$131M
CONGRESS ASSET MANAGEMENT CO6.7M2.7%$120M
GEODE CAPITAL MANAGEMENT LLC6.3M2.6%$113M
Short interest by settlement date, Aug 29, 2025 to Sep 15, 2026
SettlementShares shortOf shares outstandingDays to cover
Sep 15, 202639.7M16%10.7
Aug 31, 202635.9M15%11.0
Aug 14, 202632.5M13%8.5
Jul 31, 202634.2M14%7.5
Jul 15, 202634.7M14%9.8
Jun 30, 202635.1M14%6.4
Jun 15, 202629.0M12%9.3
May 29, 202632.0M13%6.7
May 15, 202630.2M12%9.0
Apr 30, 202626.5M11%6.1
Apr 15, 202622.2M9.1%7.8
Mar 31, 202623.6M9.6%5.9

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold. The short position is FINRA's consolidated count for each twice-monthly settlement date, as a share of shares outstanding.

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