MIR

MIRION TECHNOLOGIES INC
USCUSIP 60471A101
Institutional Owners
142
+25 QoQ
13F Value Held
$1.2B
Insider Net · 180d
$0
0↑ 0↓
Recent Filings
0
Smart-money sentimentBullish
BearishBullish
13F funds (latest Q)61 adding · 32 trimming
Insider net (180d)+$0
Price history not yet available for MIR.

Top institutional holders

142 13F filers
#FundPosition valueSharesLast moveAs of
1VANGUARD PORTFOLIO MANAGEMENT LLC
$332.9M
17.91MNewQ1 2026
2VANGUARD CAPITAL MANAGEMENT LLC
$195.3M
10.51MNewQ1 2026
3STATE STREET CORP
$175.3M
9.43MAddedQ1 2026
4Alyeska Investment Group, L.P.
$50.2M
2.70MAddedQ1 2026
5MAVERICK CAPITAL LTD
$49.3M
2.65MNewQ1 2026
6Conestoga Capital Advisors, LLC
$34.0M
1.83MReducedQ1 2026
7VANGUARD FIDUCIARY TRUST CO
$31.5M
1.69MNewQ1 2026
8Troluce Capital Advisors LLC
$27.9M
1.50MAddedQ1 2026
9EMERALD ADVISERS, LLC
$25.7M
1.38MAddedQ1 2026
10Stephens Investment Management Group LLC
$25.6M
1.37MAddedQ1 2026
11DAVIDSON KEMPNER CAPITAL MANAGEMENT LP
$24.4M
1.31MNewQ1 2026
12SEGALL BRYANT & HAMILL, LLC
$20.7M
1.11MNewQ1 2026
13Allspring Global Investments Holdings, LLC
$19.8M
1.06MAddedQ1 2026
14PUBLIC SECTOR PENSION INVESTMENT BOARD
$16.3M
875.3KAddedQ1 2026
15EMERALD MUTUAL FUND ADVISERS TRUST
$16.2M
873.5KAddedQ1 2026
16SCHWARTZ INVESTMENT COUNSEL INC
$15.9M
854.3KAddedQ1 2026
17Tidal Investments LLC
$14.4M
775.0KAddedQ1 2026
18OBERWEIS ASSET MANAGEMENT INC/
$13.8M
744.3KAddedQ1 2026
19Ensign Peak Advisors, Inc
$11.7M
631.4KReducedQ1 2026
20ArrowMark Colorado Holdings LLC
$10.7M
575.2KReducedQ1 2026
21Caption Management, LLC
$10.4M
557.8KNewQ1 2026
22PEREGRINE CAPITAL MANAGEMENT LLC
$8.6M
462.4KAddedQ1 2026
23EXCHANGE TRADED CONCEPTS, LLC
$7.6M
407.0KAddedQ1 2026
24BANK OF NOVA SCOTIA
$7.1M
380.2KReducedQ1 2026
25MIROVA
$6.8M
368.4KNewQ1 2026

Fund activity — latest quarter

Opened (NEW)
30
funds
Added
31
funds
Reduced
32
funds
Exited
0
funds

Insider activity (Form 4)

No Form 4 insider transactions on file yet.

Institutional ownership over time

135 funds+134 since Q2 2022
068135Q2 2022Q1 2023Q4 2023Q3 2024Q2 2025Q1 2026
funds holding aggregate valuelatest $945M

Funds that own MIR also own

CompanyCo-held byCombined value
Nvidia Corp. (US)NVDA128 funds$261.4B
Microsoft CorporationMSFT127 funds$173.8B
Amazon.com, Inc.AMZN120 funds$131.5B
Broadcom LtdAVGO120 funds$91.4B
Alphabet, Inc. Cl AGOOGL119 funds$104.4B
Meta Platforms, Inc.META116 funds$78.2B
Lilly Eli & CoLLY116 funds$48.3B
Visa Inc.V116 funds$38.0B
Servicenow IncNOW116 funds$9.2B
Apple, Inc.AAPL115 funds$221.1B
Mastercard, Inc.MA115 funds$28.5B
Jpmorgan Chase & CoJPM113 funds$55.3B

Ranked by how many of MIR's institutional holders also hold each name — a cross-fund conviction signal. Via the MCP server (ticker.co_held).

Recent filings

0 shown

No filings captured for this ticker in the live stream yet.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for MIR. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.