MIR
Mirion Technologies, Inc.Marquee-fund ownership over time
This quarter's activity
New positions opened
Positions exited
None.
Current holders
Sorted by tenure (longest first)| Fund | First disclosed | Held | Entry price | Latest close | Return on entry |
|---|---|---|---|---|---|
| Maverick Capital re-entered | Q2 2024 | 8Q | $11 | $18 | +71% |
| Millennium Management re-entered | Q3 2024(8Q snapshot) | 7Q | $10 | $18 | +73% |
| Citadel Advisors | Q4 2024(8Q snapshot) | 6Q | $15 | $18 | +17% |
| Bridgewater Associates re-entered | Q1 2025 | 5Q | $16 | $18 | +11% |
| D.E. Shaw | Q1 2025(8Q snapshot) | 5Q | $16 | $18 | +11% |
| AQR Capital Management | Q1 2025(8Q snapshot) | 5Q | $16 | $18 | +11% |
| Point72 Asset Management | Q2 2026(8Q snapshot) | 1Q | $18 | $18 | -1% |
“Return on entry” is the price-only move from the fund's first disclosure to today — it ignores any adds, trims, or dividends. A fund that built its position over multiple quarters has a true cost basis somewhere between entry price and latest close; this figure is the upper bound.
Past holders
Funds that exited at some point| Fund | Last entry | Exited | Entry → Exit | Return |
|---|---|---|---|---|
| Two Sigma Investments | Q3 2025 | Q1 2026 | → $22 | +7% |
| Soros Fund Management | Q3 2025 | Q4 2025 | → $25 | +21% |
| Renaissance Technologies | Q3 2024 | Q4 2025 | → $24 | +135% |
| Duquesne Family Office | Q1 2025 | Q2 2025 | → $17 | +5% |
Insider activity
Form 4 — officers, directors, 10%+ ownersFiled within two business days of each transaction by anyone with material insider status at Mirion Technologies, Inc.. Pair with the holders table above as a sanity check: heavy insider buying alongside marquee-fund accumulation is the strongest accumulation signal; heavy insider selling alongside fund exits is the strongest distribution signal.
30d / 90d windows measured from May 14, 2026 — the most recent Form 4 on file — not from today.
- Form 40001628280-26-035097May 14, 2026
- Form 40001628280-26-035096May 14, 2026
- Form 40001628280-26-035094May 14, 2026
- Form 40001628280-26-035092May 14, 2026
- Form 40001628280-26-035090May 14, 2026
- Form 40001628280-26-035088May 14, 2026
- Form 40001628280-26-035086May 14, 2026
- Form 40001628280-26-032863May 8, 2026
- Form 40001628280-26-032198May 7, 2026
- Form 40001628280-26-023183Apr 2, 2026
- Form 40001628280-26-023177Apr 2, 2026
- Form 40001628280-26-023173Apr 2, 2026
- Form 40001628280-26-023169Apr 2, 2026
- Form 40001628280-26-023163Apr 2, 2026
- Form 40001628280-26-023160Apr 2, 2026
Fundamentals
XBRL · Mirion Technologies, Inc.Annual figures sourced directly from Mirion Technologies, Inc.'s 10-K / 10-Q filings via SEC EDGAR XBRL. Latest fiscal year and the year-over-year change, with up to ten years of history.
Recent SEC filings
10-K · 10-Q · 8-K · 13D/G · proxyThe most recent material filings for Mirion Technologies, Inc. — earnings, material events, ownership disclosures, proxy statements. Form 4 insider activity is shown in the panel above.
- 8-KMaterial eventMay 14, 2026
- 10-QQuarterly reportApr 29, 2026
- 8-KMaterial eventApr 28, 2026
- 8-KMaterial eventApr 13, 2026
- DEF 14AProxy statementApr 1, 2026
- DEF 14AProxy statementApr 1, 2026
- 10-KAnnual reportFeb 19, 2026
- 8-KMaterial eventFeb 10, 2026
- 8-KMaterial eventDec 8, 2025
- 8-KMaterial eventDec 1, 2025
- 8-KMaterial eventNov 7, 2025
- 10-QQuarterly reportOct 29, 2025
- 8-KMaterial eventOct 28, 2025
- 8-KMaterial eventSep 30, 2025
- 8-KMaterial eventSep 24, 2025
Trade history
Every open→close lifecycle across tracked funds| Fund | Open date | Close date | Open price | Close price / current | Return |
|---|---|---|---|---|---|
| Millennium Management | Q2 2026 | open | $18 | $18 | -1% |
| Maverick Capital | Q2 2026 | open | $18 | $18 | -0% |
| Point72 Asset Management | Q2 2026 | open | $18 | $18 | -1% |
| Bridgewater Associates | Q1 2026 | open | $23 | $18 | -20% |
| Soros Fund Management | Q3 2025 | Q4 2025 | $21 | $25 | +21% |
| Two Sigma Investments | Q3 2025 | Q1 2026 | $21 | $22 | +7% |
| D.E. Shaw | Q1 2025 | open | $16 | $18 | +11% |
| AQR Capital Management | Q1 2025 | open | $16 | $18 | +11% |
| Duquesne Family Office | Q1 2025 | Q2 2025 | $16 | $17 | +5% |
| Bridgewater Associates | Q1 2025 | Q2 2025 | $16 | $18 | +8% |
| Citadel Advisors | Q4 2024 | open | $15 | $18 | +17% |
| Millennium Management | Q3 2024 | Q1 2026 | $10 | $22 | +111% |
| Renaissance Technologies | Q3 2024 | Q4 2025 | $10 | $24 | +135% |
| Maverick Capital | Q2 2024 | Q1 2026 | $11 | $23 | +113% |
- Covers only the 27 marquee funds tracked here, not the full institutional universe. A “0 holders” reading does not mean unowned.
- Heavy funds (Renaissance Technologies, Citadel Advisors, Soros Fund Management, Two Sigma Investments, D.E. Shaw, AQR Capital Management, Millennium Management, Point72 Asset Management) use 8-quarter snapshots, so their pre-2024 history is missing.
- “Current” reflects each fund's most recent 13F — filings lag the actual trade by up to 45 days; positions shown may have changed since.
- Cost = price at the entry filing date. Re-entered positions show the most recent open lot.
- Options, ADRs, and unmapped CUSIPs are excluded from the follower-backtest pipeline that produces these snapshots, so certain holding types won't appear here.