Ticker · CUSIP 59356Q108
Holders (tracked)
12
Combined shares
2,570,544
Combined value
$108.30M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
+2 vs previous quarter over the last 2.
SEC event timeline
17 events
- Ken Griffin (Citadel Advisors) trimmed2026-02-17−355,470 shares · 2025Q413F
- D.E. Shaw & Co. exited2026-02-17−25,063 shares · 2025Q413F
- Two Sigma Investments added2026-02-17+90,320 shares · 2025Q413F
- +56,006 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) added2026-02-17+126,182 shares · 2025Q413F
- T. Rowe Price trimmed2026-02-17−268,296 shares · 2025Q413F
- Wellington Management added2026-02-17+32,998 shares · 2025Q413F
- George Soros (Soros Fund Mgmt) added2026-02-13+50,300 shares · 2025Q413F
- Renaissance Technologies opened position2026-02-12+195,099 shares · 2025Q413F
- Norges Bank (Norway SWF) opened position2026-02-10+277,200 shares · 2025Q413F
- Two Sigma Investments opened position2025-11-14+50,011 shares · 2025Q313F
- D.E. Shaw & Co. opened position2025-11-14+25,063 shares · 2025Q313F
- T. Rowe Price opened position2025-11-14+398,782 shares · 2025Q313F
- Wellington Management opened position2025-11-14+583,120 shares · 2025Q313F
- +104,260 shares · 2025Q313F
- +25,000 shares · 2025Q313F
- +158,482 shares · 2025Q313F
Insider activity
Last 30 days
Net (open-market)
$0
Buys
0 · $0
Sells
0 · $0
Unique insiders
1
| Date | Insider | Code | Shares | Price | Value |
|---|---|---|---|---|---|
| 04-09 | Beckelman John Director | M | 8,667 | $12.00 | $104.0K |
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions3
- Norges Bank (Norway SWF)+277,200$12.3M
- Renaissance Technologies+195,099$8.7M
- Paul Tudor Jones (Tudor Investment)+56,006$2.5M
Added to4
- Izzy Englander (Millennium Mgmt)+126,182$5.6M
- Two Sigma Investments+90,320$4.0M
- George Soros (Soros Fund Mgmt)+50,300$2.2M
- Wellington Management+32,998$1.5M
Trimmed2
- Ken Griffin (Citadel Advisors)−355,470$15.8M
- T. Rowe Price−268,296$12K
Exited1
- D.E. Shaw & Co.−25,063$1.0M
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2025Q3 | 10 | $80.7M |
| 2025Q4 | 12 | $108.3M |
Who owns MIAX
12 super-investors · 2025Q4
Tracked stake
2.57M
shares
Combined value
$108M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New3Added4Trim4Held1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Ken Griffin Citadel Advisors | 619.6K | $27M |
| 2 | Wellington Management | 616.1K | $27M |
| 3 | Izzy Englander Millennium Mgmt | 284.7K | $13M |
| 4 | Norges Bank Norway SWF | 277.2K | $12M |
| 5 | Renaissance Technologies | 195.1K | $9M |
| 6 | George Soros Soros Fund Mgmt | 154.6K | $7M |
| 7 | Two Sigma Investments | 140.3K | $6M |
| 8 | Paul Tudor Jones Tudor Investment | 56.0K | $2M |
| 9 | Ken Griffin Citadel Advisors | 38.9K | $2M |
| 10 | Ken Griffin Citadel Advisors | 32.6K | $1M |
| 11 | Jonathan Auerbach Hound Partners | 25.0K | $1M |
| 12 | T. Rowe Price | 130.5K | $6K |
Recent moves
17 transactions
- −355,470 · 2025Q4
- SOLDD.E. Shaw & Co.−25,063 · 2025Q4
- +90,320 · 2025Q4
- +56,006 · 2025Q4
- +126,182 · 2025Q4
- TRIMT. Rowe Price−268,296 · 2025Q4
- +32,998 · 2025Q4
- +50,300 · 2025Q4
- +195,099 · 2025Q4
- +277,200 · 2025Q4
- +50,011 · 2025Q3
- +25,063 · 2025Q3
- +398,782 · 2025Q3
- +583,120 · 2025Q3
- +104,260 · 2025Q3
- +25,000 · 2025Q3
- +158,482 · 2025Q3
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