Investors / filer profile

Gallagher Thomas P.

Chairman & CEO

active in 1 company · 1 of 1 positions beat the S&P ~6mo later

Pro
Bought: Pro
Sold: 16
Filings: 1
Companies: 2026-09-03
Last filed

EDGAR · CIK 0002080477 ↗

Track record

How each disclosed position did against the S&P ~6 months later

The outcome curve and every position's resultPro →

+35.8%

median move per position

+5.1%

S&P 500 median, same spans

1 of 1

beat the S&P ~6mo later

Disclosed positions

Estimated from their latest filings — positions may have changed since

Estimated positions from their latest filingsPro →

Activity

Open-market buy & sell volume

BuySell

Total +$276.0K bought · −$8.15M sold

All filings on record

Every Form 4 transaction we track for this filer


MIAXMIAMI INTERNATIONAL HOLDINGS, INC.	Exercise $100.0K · 4,464 sh	2026-09-03	—
MIAXMIAMI INTERNATIONAL HOLDINGS, INC.	Exercise $200.0K · 13,140 sh	2026-09-03	—
MIAXMIAMI INTERNATIONAL HOLDINGS, INC.	Exercise $100.0K · 8,333 sh	2026-09-03	—
MIAXMIAMI INTERNATIONAL HOLDINGS, INC.	Exercise $200.0K · 16,666 sh	2026-09-03	—
MIAXMIAMI INTERNATIONAL HOLDINGS, INC.	Sell $1.99M · 47,000 sh	2026-09-03	—
MIAXMIAMI INTERNATIONAL HOLDINGS, INC.	Exercise $564.0K · 47,000 sh	2026-09-03	—
MIAXMIAMI INTERNATIONAL HOLDINGS, INC.	Sell $6.16M · 149,700 sh	2026-08-19	—
MIAXMIAMI INTERNATIONAL HOLDINGS, INC.	Tax $6.37M · 150,300 sh	2026-08-18	—
MIAXMIAMI INTERNATIONAL HOLDINGS, INC.	Grant — · 232,977 sh	2026-06-16	—
MIAXMIAMI INTERNATIONAL HOLDINGS, INC.	Tax $2.07M · 50,100 sh	2026-02-10	—

MIAXExercise

2026-09-03 · MIAMI INTERNATIONAL HOLDINGS, INC.

$100.0K

—

MIAXExercise

2026-09-03 · MIAMI INTERNATIONAL HOLDINGS, INC.

$200.0K

—

MIAXExercise

2026-09-03 · MIAMI INTERNATIONAL HOLDINGS, INC.

$100.0K

—

MIAXExercise

2026-09-03 · MIAMI INTERNATIONAL HOLDINGS, INC.

$200.0K

—

MIAXSell

2026-09-03 · MIAMI INTERNATIONAL HOLDINGS, INC.

$1.99M

—

MIAXExercise

2026-09-03 · MIAMI INTERNATIONAL HOLDINGS, INC.

$564.0K

—

MIAXSell

2026-08-19 · MIAMI INTERNATIONAL HOLDINGS, INC.

$6.16M

—

2026-08-18 · MIAMI INTERNATIONAL HOLDINGS, INC.

$6.37M

—

MIAXGrant

2026-06-16 · MIAMI INTERNATIONAL HOLDINGS, INC.

232,977

—

2026-02-10 · MIAMI INTERNATIONAL HOLDINGS, INC.

$2.07M

—

Newest 10 of 16 filingsEvery Form 4 on record, with outcomesPro →

Outcomes measure each position — the first buy in a stock and every buy within 182 days — against the closing price ~6 months (120 trading days) later, with the S&P 500 over the same span for context. Pre-scheduled 10b5-1 plan trades are excluded from the record. Positions are estimated from the latest reported post-transaction holdings, split-adjusted, at the latest close. Built from SEC Form 4 filings and market prices — past outcomes, not predictions or advice.