Miami International Holdings
MIAX
30.18
-0.61
-1.98%
Miami International Holdings
US · MIAX
#2409 by market cap
Listed 2025
30.18
-0.61
-1.98%
Live - 5344 symbols - heartbeat 365s ago
· 2026-10-08 04:00
Pre-market
30.18
0.00%
After-hours
30.15
-0.10%
- Market cap
- 2.99B
- P/E (TTM)i
- 20.91
- P/Bi
- 2.60
- EPSi
- -0.82
- Div yieldi
- 0.00%
- 52W posi
- 3%
Reader sentiment
Are you bullish or bearish on MIAX?
Anonymous reader poll. Unscientific, not investment advice.
✦ Quant Ownership Signal how this is computed
Distributing
- The number of reporting institutions increased by 1 in the most recent period (2026/Q3).
- Total institutional ownership fell 0.4 percentage points.
Institutional ownership
- Held by institutions
- 82.52% -0.35pp
- Institutions
- 259 +1
- As of
- 2026/Q3 vs. prior period
Ownership vs. money flow
AlignedInstitutions trimmed shares last reporting period, and the stock has seen net outflows in main-fund flow over the last 20 trading sessions - the two line up.
Institutional ownership changes are reported quarterly with a lag; fund-flow data is daily. Treat this as a directional cross-check, not a precise timing signal.
Holder types
Mutual Fund54.31%
Hedge Fund13.34%
Public Company7.02%
Private Company5.52%
Individual/Insider4.90%
Government Pension Fund1.22%
Family Office/Trust0.52%
Sovereign Wealth Fund0.25%
Insurance Company0.24%
Other12.68%
Top holders as of 2026-06-30
Horizon Kinetics Holding Corporation
7.90% · 7.84M sh
T. Rowe Price Group, Inc.
5.92% · 5.88M sh
BlackRock
5.11% · 5.07M sh
Wolverine Asset Management, LLC
3.84% · 3.81M sh
Vanguard Portfolio Management, LLC
3.82% · 3.79M sh
Arzan Financial Group for Financing and Investment - KPSC
3.65% · 3.62M sh
Vanguard Capital Management, LLC
3.51% · 3.48M sh
Susquehanna International Group, LLP
3.38% · 3.36M sh
Invesco Ltd.
2.03% · 2.01M sh
Thomas Gallagher
1.99% · 1.98M sh
Bar length is relative to the largest holder shown here, not to 100% of the company.
Insiders
50 filings tracked · 17 buys · 33 sells
| Name | Role | Stake |
|---|---|---|
| Thomas Gallagher | Chairperson & CEO | 1.99% |
| Barbara Comly | General Counsel | 0.81% |
| Abdulwahab Al-Nakib | Former Director | 0.45% |
| Douglas Schafer | Chief Information Officer, Executive VP & Director | 0.37% |
| Shelly Brown | Executive Vice President of Strategic Planning & Business Development | 0.28% |
| John Smollen | Executive VP and Head of Exchange Traded Products & Strategic Relations | 0.26% |
| Kurt Eckert | Director | 0.15% |
| Edward Deitzel | Executive VP, Chief Regulatory Officer & Chief Compliance Officer | 0.11% |
| Cynthia Schwarzkopf | Independent Director | 0.08% |
| J. Teekell | Independent Director | 0.08% |
Insider transactions most recent Form 4 filings
| Date | Name | Role | Type | Shares | Price |
|---|---|---|---|---|---|
| 2026-10-01 | Douglas Schafer | Chief Information Officer, Executive VP & Director | Intent to Sell (Form 144) | -120,000 | $33.75 |
| 2026-09-24 | Harish Jayabalan | Executive VP, Chief Information Security Officer & Chief Risk Officer | Derivative Exercise and Retained | +8,333 | $12.00 |
| 2026-09-15 | Shelly Brown | Executive Vice President of Strategic Planning & Business Development | Automatic Disposition | -21,217 | $38.61 |
| 2026-09-10 | Shelly Brown | Executive Vice President of Strategic Planning & Business Development | Sale to Issuer | -16,283 | $42.54 |
| 2026-09-02 | Thomas Gallagher | Chairperson & CEO | Derivative Exercise and Sale | -47,000 | $12.00–42.43 |
| 2026-09-02 | Thomas Gallagher | Chairperson & CEO | Derivative Exercise and Retained | +42,603 | $12.00–22.40 |
| 2026-09-02 | Edward Deitzel | Executive VP, Chief Regulatory Officer & Chief Compliance Officer | Derivative Exercise and Sale | -11,000 | $12.00–42.21 |
| 2026-09-01 | Douglas Schafer | Chief Information Officer, Executive VP & Director | Derivative Exercise and Sale | -48,000 | $12.00–40.48 |
| 2026-09-01 | Barbara Comly | General Counsel | Derivative Exercise and Sale | -44,445 | $12.00–40.49 |
| 2026-09-01 | J. Teekell | Independent Director | Automatic Disposition | -3,000 | $40.89 |
| 2026-09-01 | Estate of Byrum W. Teekell | -- | Open Market Disposition | -5,545 | $41.58 |
| 2026-08-18 | Thomas Gallagher | Chairperson & CEO | Open Market Disposition | -149,700 | $41.13 |
| 2026-08-17 | Thomas Gallagher | Chairperson & CEO | Sale to Issuer | -150,300 | $42.41 |
| 2026-08-17 | Barbara Comly | General Counsel | Sale to Issuer | -43,420 | $42.41 |
| 2026-08-16 | Lance Emmons | Chief Financial Officer | Automatic Disposition | -35,000 | $42.83 |
| 2026-08-16 | Cynthia Schwarzkopf | Independent Director | Derivative Exercise and Sale | -5,000 | $12.00–42.85 |
| 2026-08-03 | Thomas Gallagher | Chairperson & CEO | Derivative Exercise and Sale | -48,334 | $12.00–45.69 |
| 2026-08-03 | Douglas Schafer | Chief Information Officer, Executive VP & Director | Derivative Exercise and Sale | -48,000 | $12.00–45.71 |
| 2026-08-03 | Kurt Eckert | Director | Derivative Exercise and Sale | -1,063 | $12.00–45.80 |
| 2026-08-03 | Barbara Comly | General Counsel | Derivative Exercise and Sale | -44,445 | $12.00–45.69 |
Form 4 filings, most recent per company. "Other Derivative Acquisition" rows are mostly RSU/option vesting, not open-market buying - the Type column says which.
Quote time 2026-10-08 04:00:04 · For reference only, not investment advice and not tailored to your situation.