Ticker · CUSIP 55287L101
Holders (tracked)
11
Combined shares
7,042,944
Combined value
$195.65M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
+1 vs previous quarter over the last 6.
SEC event timeline
16 events
- Ken Griffin (Citadel Advisors) trimmed2026-02-17−186,226 shares · 2025Q413F
- D.E. Shaw & Co. opened position2026-02-17+671,838 shares · 2025Q413F
- Two Sigma Investments added2026-02-17+124,984 shares · 2025Q413F
- Steve Cohen (Point72) added2026-02-17+52,942 shares · 2025Q413F
- T. Rowe Price trimmed2026-02-17−114,220 shares · 2025Q413F
- Wellington Management trimmed2026-02-17−1,473,375 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−193,367 shares · 2025Q413F
- AQR Capital Management added2026-02-17+15,645 shares · 2025Q413F
- Renaissance Technologies opened position2026-02-12+32,644 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) trimmed2025-11-14−111,424 shares · 2025Q313F
- Steve Cohen (Point72) trimmed2025-11-14−346,120 shares · 2025Q313F
- Two Sigma Investments opened position2025-11-14+13,587 shares · 2025Q313F
- Wellington Management added2025-11-14+2,556,708 shares · 2025Q313F
- AQR Capital Management trimmed2025-11-14−2,237 shares · 2025Q313F
- T. Rowe Price trimmed2025-11-14−392,184 shares · 2025Q313F
- Norges Bank (Norway SWF) opened position2025-11-12+25,000 shares · 2024Q313F
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 positions2
- D.E. Shaw & Co.+671,838$21.2M
- Renaissance Technologies+32,644$1.0M
Added to3
- Two Sigma Investments+124,984$3.9M
- Steve Cohen (Point72)+52,942$1.7M
- AQR Capital Management+15,645$493K
Trimmed4
- Wellington Management−1,473,375$46.5M
- Izzy Englander (Millennium Mgmt)−193,367$6.1M
- Ken Griffin (Citadel Advisors)−186,226$5.9M
- T. Rowe Price−114,220$4K
Exited0
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Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2024Q3 | 7 | $91.1M |
| 2024Q4 | 4 | $10.7M |
| 2025Q1 | 5 | $21.8M |
| 2025Q2 | 7 | $46.8M |
| 2025Q3 | 10 | $127.6M |
| 2025Q4 | 11 | $195.7M |
Who owns MBX
11 super-investors · 2025Q4
Tracked stake
7.04M
shares
Combined value
$196M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New2Added3Trim6
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Wellington Management | 3.35M | $106M |
| 2 | Ken Griffin Citadel Advisors | 809.9K | $26M |
| 3 | Steve Cohen Point72 | 680.6K | $21M |
| 4 | D.E. Shaw & Co. | 671.8K | $21M |
| 5 | Izzy Englander Millennium Mgmt | 462.0K | $15M |
| 6 | Two Sigma Investments | 138.6K | $4M |
| 7 | Renaissance Technologies | 32.6K | $1M |
| 8 | AQR Capital Management | 31.4K | $991K |
| 9 | Ken Griffin Citadel Advisors | 16.9K | $533K |
| 10 | Ken Griffin Citadel Advisors | 8.6K | $271K |
| 11 | T. Rowe Price | 840.5K | $27K |
Recent moves
20 transactions
- +15,645 · 2025Q4
- −186,226 · 2025Q4
- +671,838 · 2025Q4
- +124,984 · 2025Q4
- +52,942 · 2025Q4
- TRIMT. Rowe Price−114,220 · 2025Q4
- −1,473,375 · 2025Q4
- −193,367 · 2025Q4
- +32,644 · 2025Q4
- +13,587 · 2025Q3
- −111,424 · 2025Q3
- −346,120 · 2025Q3
- TRIMT. Rowe Price−392,184 · 2025Q3
- +2,556,708 · 2025Q3
- −2,237 · 2025Q3
- +25,000 · 2024Q3
- +863,305 · 2025Q2
- −33,833 · 2025Q2
- +18,001 · 2025Q2
- +245,994 · 2025Q2
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