# MIAMI INTL HLDGS INC COM

MIAMI INTL HLDGS INC COM is a security (CUSIP 59356Q108) tracked across SEC portfolio filings. 207 institutional managers reported $1.7B on Form 13F as of 2026-06-30; 22 registered fund positions totaling $178.0M via N-PORT as of 2026-05-31.

## Summary

- Issuer: MIAMI INTL HLDGS INC
- Class: COM
- CUSIP: 59356Q108
- Asset category: EC
- 13F holders: 207
- 13F value: $1.7B
- 13F period: 2026-06-30
- N-PORT fund positions: 22
- N-PORT value: $178.0M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 207 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | BALA CYNWYD, PA | $140.7M | 3,296,346 |
| [HORIZON KINETICS ASSET MANAGEMENT LLC](https://search.stillhousedata.com/firm/106096) | NEW YORK, NY | $134.3M | 3,451,549 |
| BlackRock, Inc. | New York, NY | $86.9M | 2,232,680 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $85.6M | 1,928,286 |
| [CITADEL ADVISORS LLC](https://search.stillhousedata.com/firm/148826) | MIAMI, FL | $65.9M | 1,607,780 |
| [Alyeska Investment Group, L.P.](https://search.stillhousedata.com/firm/155058) | CHICAGO, IL | $56.3M | 1,447,454 |
| [ADAGE CAPITAL PARTNERS GP, L.L.C.](https://search.stillhousedata.com/firm/160679) | Boston, MA | $48.5M | 1,246,999 |
| AMERICAN CENTURY COMPANIES INC | KANSAS CITY, MO | $47.5M | 1,221,485 |
| JPMORGAN CHASE & CO | NEW YORK, NY | $46.4M | 1,238,006 |
| MORGAN STANLEY | NEW YORK, NY | $44.6M | 1,146,956 |
| Allspring Global Investments Holdings, LLC | CHARLOTTE, NC | $43.8M | 1,112,261 |
| [North Reef Capital Management LP](https://search.stillhousedata.com/firm/311056) | Laguna Beach, CA | $39.5M | 1,014,274 |
| [Ghisallo Capital Management LLC](https://search.stillhousedata.com/firm/309856) | Greenwich, CT | $38.9M | 1,000,000 |
| BANK OF AMERICA CORP /DE/ | CHARLOTTE, NC | $35.1M | 900,882 |
| [TWO SIGMA INVESTMENTS, LP](https://search.stillhousedata.com/firm/137137) | New York, NY | $34.8M | 893,718 |

## Top fund holders (N-PORT)

_Showing 15 of 22 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [T. Rowe Price Small-Cap Stock Fund, Inc.](https://search.stillhousedata.com/fund/S000002120) | T. ROWE PRICE SMALL-CAP STOCK FUND, INC. | $54.8M | 67.92% |
| [T. Rowe Price Institutional Small-Cap Stock Fund](https://search.stillhousedata.com/fund/S000002094) | T. Rowe Price Equity Funds, Inc. | $29.8M | 68.74% |
| [LORD ABBETT DEVELOPING GROWTH FUND INC](https://search.stillhousedata.com/fund/S000006834) | LORD ABBETT DEVELOPING GROWTH FUND, INC. | $22.0M | 98.96% |
| [Columbia Acorn Fund](https://search.stillhousedata.com/fund/S000009184) | COLUMBIA ACORN TRUST | $16.6M | 73.92% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $13.2M | 1.62% |
| [T. Rowe Price Small-Cap Value Fund, Inc.](https://search.stillhousedata.com/fund/S000002121) | T. ROWE PRICE SMALL-CAP VALUE FUND, INC. | $11.3M | 12.24% |
| ROYCE SMALL-CAP TRUST, INC. | ROYCE SMALL-CAP TRUST, INC. | $6.3M | 28.19% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $6.0M | 3.41% |
| [Blackstone Alternative Multi-Strategy Fund](https://search.stillhousedata.com/fund/S000045538) | Blackstone Alternative Investment Funds | $5.8M | 16.10% |
| [T. Rowe Price Financial Services Fund, Inc.](https://search.stillhousedata.com/fund/S000002084) | T. ROWE PRICE FINANCIAL SERVICES FUND, INC. | $5.1M | 29.08% |
| [T. Rowe Price Spectrum Moderate Growth Allocation Fund](https://search.stillhousedata.com/fund/S000002138) | T. ROWE PRICE SPECTRUM FUNDS II, INC. | $2.3M | 5.29% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $1.6M | 3.22% |
| [Kinetics Global Portfolio](https://search.stillhousedata.com/fund/S000007852) | Kinetics Portfolios Trust | $841K | 147.71% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $719K | 0.12% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $590K | 0.19% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/59356Q108.md)
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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.