MIAX — MIAMI INTERNATIONAL HOLDINGS, INC.Today's name, from the SEC's present-day ticker list — a present-day mapping, not the name as of each filing.
- Congress trades
- 1
- all time
- Members · 12m
- 1
- 1 buys · 0 sells · by trade date
- Latest filing
- 04-07
- 2026-04-07
- Rows filed past the STOCK Act's 45-day window, stated on the row, never editorialised; both dates and the receipt stay on every row.
- 0
- every row filed inside 45 days
- 13F holders
- 191
- all listed · 2026-03-31
Congress: statutory ranges, filed up to 45 days after the trade · 13F: quarter-end snapshots, filed up to 45 days lateras of 2026-10-29
Congress · disclosure timeline
By trade date · 24 months · 1 row ▲ buy, ▼ sell; height = lower bound (log scale). Trade date, not filing date — the filing lag is in the table below.1 dated disclosure in the window, placed by trade date; magnitudes are the disclosed lower bounds, against gridlines at $15K, $250K, $5M.
Members active in MIAX
12 months · most active first Rows = number of disclosures, not dollars. Net = lower bound of the net range. Committees as of each member's latest trade in the window (roster snapshot 2026-10-29).| Member | Rows | Net disclosed flow for this ticker: purchases minus sales, computed as a net range on the disclosed amounts. A lower bound is provable, never a point. | Number of committees the member sat on as of their latest trade date in the window, from the cc0-legislators roster snapshot. Context, never an allegation; jurisdiction overlap needs the sector join. |
|---|---|---|---|
| Gilbert Ray Cisneros, Jr. D–CA-31 | 1 | $15.0K to $50.0K | 2 |
1 member
| Filed | Member | Side · Owner | Traded · Lag | Amount | Range · Flags | Src |
|---|---|---|---|---|---|---|
| 2026-04-07 | Gilbert Ray Cisneros, Jr. D–CA-31 | BUY | Traded 03-20 +18d | $15K–$50K |
13F holders · Quarter ended 2026-03-31Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt. · longs only
| # | Filer | Value | Securities | Flags | derived by Public Filings from this build's reviewed ticker-mapping holders list for this share class; that list carries each holder's share count, share change and filed date, which this table does not show, but no document links — the EDGAR link opens the filer's 13F list·§ |
|---|---|---|---|---|---|
| 1 | HORIZON KINETICS ASSET MANAGEMENT LLC | $134M | 1 | derived ·§ EDGAR ↗ | |
| 2 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $128M | 1 | derived ·§ EDGAR ↗ | |
| 3 | BlackRock, Inc. | $86.9M | 1 | derived ·§ EDGAR ↗ | |
| 4 | CITADEL ADVISORS LLC | $62.6M | 1 | derived ·§ EDGAR ↗ | |
| 5 | Invesco Ltd. | $61.7M | 1 | derived ·§ EDGAR ↗ | |
| 6 | Alyeska Investment Group, L.P. | $56.3M | 1 | derived ·§ EDGAR ↗ | |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | $55.1M | 1 | derived ·§ EDGAR ↗ | |
| 8 | VANGUARD PORTFOLIO MANAGEMENT LLC | $53.5M | 1 | derived ·§ EDGAR ↗ | |
| 9 | ADAGE CAPITAL PARTNERS GP, L.L.C. | $48.5M | 1 | derived ·§ EDGAR ↗ | |
| 10 | AMERICAN CENTURY COMPANIES INC | $47.5M | 1 | derived ·§ EDGAR ↗ | |
| 11 | MORGAN STANLEY | $44.6M | 1 | derived ·§ EDGAR ↗ | |
| 12 | Allspring Global Investments Holdings, LLC | $43.8M | 1 | derived ·§ EDGAR ↗ | |
| 13 | North Reef Capital Management LP | $39.5M | 1 | derived ·§ EDGAR ↗ | |
| 14 | Ghisallo Capital Management LLC | $38.9M | 1 | derived ·§ EDGAR ↗ | |
| 15 | BANK OF AMERICA CORP /DE/ | $35.1M | 1 | derived ·§ EDGAR ↗ | |
| 16 | TWO SIGMA INVESTMENTS, LP | $34.8M | 1 | derived ·§ EDGAR ↗ | |
| 17 | STATE STREET CORP | $27.7M | 1 | derived ·§ EDGAR ↗ | |
| 18 | BLAIR WILLIAM & CO/IL | $25.9M | 1 | derived ·§ EDGAR ↗ | |
| 19 | Caldwell Investment Management Ltd. | $24.9M | 1 | derived ·§ EDGAR ↗ | |
| 20 | FRANKLIN RESOURCES INC | $22.1M | 1 | derived ·§ EDGAR ↗ | |
| 21 | SEVEN GRAND MANAGERS, LLC | $21.4M | 1 | derived ·§ EDGAR ↗ | |
| 22 | SEI INVESTMENTS CO | $20.5M | 1 | derived ·§ EDGAR ↗ | |
| 23 | MILLENNIUM MANAGEMENT LLC | $20.2M | 1 | derived ·§ EDGAR ↗ | |
| 24 | Clearstead Advisors, LLC | $19.6M | 1 | derived ·§ EDGAR ↗ | |
| 25 | WELLINGTON MANAGEMENT GROUP LLP | $17.3M | 1 | derived ·§ EDGAR ↗ |
Show all 191 holders
| # | Filer | Value | Securities | Flags | Src·§ |
|---|
All 153 13F filers reporting this share class are listed. Method ↗
Crowding — not available in this build. No holder rows for the selected period, so no percentile can be ranked.
Congress ↔ notable managers · MIAX
Congress · last 90 days
- Buyers
- 0 — —
- Sellers
- 0 — —
filed 2026-07-31 → 2026-10-29 · statutory ranges
Notable managers · quarter ended 2026-03-31
- Adding
- 0 — $0 held
- Trimming
- 1 Soros Fund Management $5.2M held
by shares · $ = value heldNEW + ADD vs TRIM + EXIT, by share count. $ = reported value now, not the change. · MIAMI INTL HLDGS INC
| Date | Who | Change | Size |
|---|---|---|---|
| 2026-05-15 | Soros Fund Management 13F | TRIM | −21,960 sh |
1 newest, by filing date · 13F rows are quarter-end snapshots, not trades
Congress vs filers
12 monthsCongress net (rows)1 buy / 0 sell
Congress net ($ bound)$15.0K to $50.0K
Filersnot computedThe filer side needs per-issuer quarter-over-quarter actions, which the published aggregate does not carry for this issuer. Convergence and divergence are stated only when both sides are computed.