Ticker · CUSIP 59540G107
Holders (tracked)
6
Combined shares
2,371,429
Combined value
$73.21M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
-1 vs previous quarter over the last 8.
SEC event timeline
13 events
- Ken Griffin (Citadel Advisors) trimmed2026-02-17−4,389 shares · 2025Q413F
- Two Sigma Investments trimmed2026-02-17−16,110 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−3,099 shares · 2025Q413F
- T. Rowe Price added2026-02-17+842 shares · 2025Q413F
- Wellington Management added2026-02-17+50,000 shares · 2025Q413F
- AQR Capital Management added2026-02-17+961 shares · 2025Q413F
- Renaissance Technologies exited2026-02-12−13,867 shares · 2025Q413F
- Wellington Management added2025-11-14+450,909 shares · 2025Q313F
- +16,304 shares · 2025Q313F
- Two Sigma Investments added2025-11-14+11,873 shares · 2025Q313F
- AQR Capital Management added2025-11-14+1,408 shares · 2025Q313F
- T. Rowe Price added2025-11-14+105 shares · 2025Q313F
- Renaissance Technologies trimmed2025-11-13−50,031 shares · 2025Q313F
Insider activity
No insider transactions in the last 30 days.
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions0
—
Added to3
- Wellington Management+50,000$1.6M
- AQR Capital Management+961$30K
- T. Rowe Price+842$26
Trimmed3
- Two Sigma Investments−16,110$500K
- Ken Griffin (Citadel Advisors)−4,389$136K
- Izzy Englander (Millennium Mgmt)−3,099$96K
Exited1
- Renaissance Technologies−13,867$397K
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 5 | $51.8M |
| 2022Q2 | 4 | $51.4M |
| 2022Q3 | 3 | $55K |
| 2022Q4 | 6 | $61.0M |
| 2023Q1 | 4 | $49.7M |
| 2023Q2 | 2 | $42.0M |
| 2023Q3 | 4 | $25.0M |
| 2023Q4 | 5 | $30.8M |
| 2024Q1 | 6 | $38.7M |
| 2024Q2 | 6 | $40.9M |
| 2024Q3 | 6 | $21.5M |
| 2024Q4 | 5 | $4.8M |
| 2025Q1 | 7 | $45.5M |
| 2025Q2 | 6 | $54.0M |
| 2025Q3 | 7 | $67.2M |
| 2025Q4 | 6 | $73.2M |
Who owns MPB
6 super-investors · 2025Q4
Tracked stake
2.37M
shares
Combined value
$73M
% of shares outstanding
—
shares-out unknown
Quarter action mix
Added3Trim3
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Wellington Management | 2.27M | $71M |
| 2 | Two Sigma Investments | 42.7K | $1M |
| 3 | AQR Capital Management | 21.2K | $658K |
| 4 | Izzy Englander Millennium Mgmt | 13.2K | $410K |
| 5 | Ken Griffin Citadel Advisors | 8.3K | $257K |
| 6 | T. Rowe Price | 11.5K | $357 |
Recent moves
20 transactions
- −3,099 · 2025Q4
- −4,389 · 2025Q4
- −16,110 · 2025Q4
- +842 · 2025Q4
- +961 · 2025Q4
- +50,000 · 2025Q4
- −13,867 · 2025Q4
- +105 · 2025Q3
- +16,304 · 2025Q3
- +11,873 · 2025Q3
- +450,909 · 2025Q3
- +1,408 · 2025Q3
- −50,031 · 2025Q3
- SOLDD.E. Shaw & Co.−36,180 · 2025Q2
- −3,883 · 2025Q2
- −18,435 · 2025Q2
- −33,349 · 2025Q2
- +10,555 · 2025Q2
- +266,373 · 2025Q2
- +13,340 · 2025Q2
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