Ticker · CUSIP 59356Q108

MIAX

MIAMI INTL HLDGS INC
···Share
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.
12102025Q32025Q4

SEC event timeline

17 events
  1. −355,470 shares · 2025Q4
    13F
  2. −25,063 shares · 2025Q4
    13F
  3. +90,320 shares · 2025Q4
    13F
  4. +56,006 shares · 2025Q4
    13F
  5. +126,182 shares · 2025Q4
    13F
  6. −268,296 shares · 2025Q4
    13F
  7. +32,998 shares · 2025Q4
    13F
  8. +50,300 shares · 2025Q4
    13F
  9. +195,099 shares · 2025Q4
    13F
  10. +277,200 shares · 2025Q4
    13F
  11. +50,011 shares · 2025Q3
    13F
  12. +25,063 shares · 2025Q3
    13F
  13. +398,782 shares · 2025Q3
    13F
  14. +583,120 shares · 2025Q3
    13F
  15. +104,260 shares · 2025Q3
    13F
  16. +25,000 shares · 2025Q3
    13F
  17. +158,482 shares · 2025Q3
    13F

Insider activity

Last 30 days
Net (open-market)
$0
Buys
0 · $0
Sells
0 · $0
Unique insiders
1
DateInsiderCodeSharesPriceValue
04-09Beckelman John
Director
M8,667$12.00$104.0K

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
Trimmed2
Exited1

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined 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
#ManagerSharesValue
1Ken Griffin
Citadel Advisors
619.6K$27M
2Wellington Management616.1K$27M
3Izzy Englander
Millennium Mgmt
284.7K$13M
4Norges Bank
Norway SWF
277.2K$12M
5Renaissance Technologies195.1K$9M
6George Soros
Soros Fund Mgmt
154.6K$7M
7Two Sigma Investments140.3K$6M
8Paul Tudor Jones
Tudor Investment
56.0K$2M
9Ken Griffin
Citadel Advisors
38.9K$2M
10Ken Griffin
Citadel Advisors
32.6K$1M
11Jonathan Auerbach
Hound Partners
25.0K$1M
12T. Rowe Price130.5K$6K

Recent moves

17 transactions
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