Portolan Capital Management, LLC
Position in MIAX — Miami International Holdings, Inc.
CIK 1350290
BOSTON, MA
Position in MIAX
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$5,013,635
New position
Shares Held
128,819
first reported quarter
Ownership
0.130%
of shares outstanding
% of Portfolio
0.27%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2026
1 quarter on record
Voting authority
Sole 100%
Shared 0%
None 0%
Position in Capital Markets
Financial Services · as of Jun 30, 2026Portolan Capital Management, LLC holds $127,611,747 across 1 Capital Markets name.
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | VIRT |
Virtu Financial, Inc.
|
2,142,215 | $127,611,747 |
All Filings in MIAX
Export CSV
1 filing row on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $5,013,635 | 128,819 | Shares | Sole | 2026-05-15 | |
| No filing history on record for this holder in this stock. | ||||||