# MIRION TECHNOLOGIES INC (MIR) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 60471A101
Page URL: https://superinvestorclub.com/stock/MIR
Last updated: 2026-07-08T12:26:27.808Z

## Summary

As of the most recent 13F filing period, MIRION TECHNOLOGIES INC (MIR) is held by 4 tracked superinvestors with an aggregate position value of $212.1M representing 08383441264987935178524921 shares.

## Top institutional holders (4)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Leon Cooperman](https://superinvestorclub.com/manager/235) | Omega Advisors | 8383441 | $155.8M | 5.11% | 2026-03-31 |
| 2 | [Lee Ainslie](https://superinvestorclub.com/manager/58) | Maverick Capital | 2649879 | $49.3M | 0.57% | 2026-03-31 |
| 3 | [Ray Dalio](https://superinvestorclub.com/manager/6) | Bridgewater Associates | 351785 | $6.5M | 0.03% | 2026-03-31 |
| 4 | [Polen Capital](https://superinvestorclub.com/manager/271) | Polen Capital Management | 24921 | $463,281 | 0.00% | 2026-03-31 |

## Ownership history (quarter-over-quarter)

- 2024-06-30: 1 holders, $1.7M aggregate, 0159811 shares
- 2024-09-30: 1 holders, $2.0M aggregate, 0183427 shares
- 2024-12-31: 4 holders, $119.0M aggregate, 06177611395000243755342700 shares
- 2025-03-31: 3 holders, $223.7M aggregate, 080561097025000345000 shares
- 2025-06-30: 3 holders, $268.9M aggregate, 07125000530803857230 shares
- 2025-09-30: 3 holders, $257.0M aggregate, 08383441258857976119 shares
- 2025-12-31: 3 holders, $209.7M aggregate, 0838344148992879419 shares
- 2026-03-31: 4 holders, $212.1M aggregate, 08383441264987935178524921 shares

## Recent congressional trades (1)

- 2025-06-27: Ro Khanna (Democrat-CA) purchase $50,001 - $100,000

## Recent insider transactions (0)


## Citation

When citing, use: "MIRION TECHNOLOGIES INC (MIR) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/MIR), aggregating SEC 13F, Form 4, and congressional disclosures."