Ticker · CUSIP 55380K109
Holders (tracked)
6
Combined shares
278,457
Combined value
$14.82M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
+1 vs previous quarter over the last 8.
SEC event timeline
12 events
- Biles Linda M · Executive VP - Finance2026-04-14Sold 720 shInsider sell
- Ken Griffin (Citadel Advisors) added2026-02-17+4,384 shares · 2025Q413F
- Two Sigma Investments trimmed2026-02-17−154 shares · 2025Q413F
- +4,445 shares · 2025Q413F
- AQR Capital Management trimmed2026-02-17−11,417 shares · 2025Q413F
- Renaissance Technologies added2026-02-12+15,454 shares · 2025Q413F
- Mario Gabelli (GAMCO) added2026-02-05+32,760 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) exited2025-11-14−6,235 shares · 2025Q313F
- Two Sigma Investments added2025-11-14+15,085 shares · 2025Q313F
- AQR Capital Management opened position2025-11-14+16,525 shares · 2025Q313F
- Renaissance Technologies added2025-11-13+6,500 shares · 2025Q313F
- Mario Gabelli (GAMCO) trimmed2025-11-12−3,000 shares · 2025Q313F
Insider activity
Last 30 days
Net (open-market)
$0
Buys
0 · $0
Sells
1 · $0
Unique insiders
1
| Date | Insider | Code | Shares | Price | Value |
|---|---|---|---|---|---|
| 04-14 | Biles Linda M Executive VP - Finance · Officer | S | 720 | — | $0 |
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions1
- Izzy Englander (Millennium Mgmt)+4,445$237K
Added to3
- Mario Gabelli (GAMCO)+32,760$1.7M
- Renaissance Technologies+15,454$822K
- Ken Griffin (Citadel Advisors)+4,384$233K
Trimmed2
- AQR Capital Management−11,417$608K
- Two Sigma Investments−154$8K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q4 | 3 | $2.1M |
| 2023Q1 | 3 | $2.6M |
| 2023Q2 | 3 | $3.1M |
| 2023Q3 | 3 | $4.7M |
| 2023Q4 | 3 | $7.4M |
| 2024Q1 | 2 | $6.2M |
| 2024Q2 | 3 | $7.4M |
| 2024Q3 | 3 | $8.7M |
| 2024Q4 | 3 | $9.8M |
| 2025Q1 | 3 | $8.9M |
| 2025Q2 | 5 | $8.9M |
| 2025Q3 | 5 | $12.9M |
| 2025Q4 | 6 | $14.8M |
Who owns MPTI
6 super-investors · 2025Q4
Tracked stake
278.5K
shares
Combined value
$15M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New1Added3Trim2
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Mario Gabelli GAMCO | 174.3K | $9M |
| 2 | Renaissance Technologies | 60.6K | $3M |
| 3 | Two Sigma Investments | 21.5K | $1M |
| 4 | Ken Griffin Citadel Advisors | 12.5K | $667K |
| 5 | AQR Capital Management | 5.1K | $272K |
| 6 | Izzy Englander Millennium Mgmt | 4.4K | $237K |
Recent moves
20 transactions
- −154 · 2025Q4
- +4,384 · 2025Q4
- +4,445 · 2025Q4
- −11,417 · 2025Q4
- +15,454 · 2025Q4
- +32,760 · 2025Q4
- +15,085 · 2025Q3
- +16,525 · 2025Q3
- −6,235 · 2025Q3
- +6,500 · 2025Q3
- −3,000 · 2025Q3
- +6,615 · 2025Q2
- −12,688 · 2025Q2
- +6,000 · 2025Q2
- −3,800 · 2025Q2
- +11,962 · 2025Q1
- −6,400 · 2025Q1
- −7,200 · 2025Q1
- +6,961 · 2024Q4
- +23,200 · 2024Q4
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