MLAAU · Mountain Lake Acquisition Corp. II · Shareholders & Ownership
Every disclosed holder of MLAAU in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns MLAAU
13F quarter Jun 30, 2026; this listing alone: insiders and shares outstanding are issuer-wide, so they are left outNo chart: shares outstanding cannot be set against these holders.
| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 2,279,928 | — |
| Insiders (Forms 3, 4, 5) | 0 | — |
| 13D/G-only blocks | 0 | — |
| Registered funds (N-PORT, not summed) | 0 | — |
% Out is unavailable: shares outstanding is an issuer-wide count, not one listing's.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of MLAAU
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
Calamos Advisors LLC
13F
CIK 1316507 · Registered investment adviser · Jun 30, 2026
|
783,000 | ||
| 2 |
OMERS ADMINISTRATION Corp
13F
CIK 1053321 · Pension or benefit plan · Jun 30, 2026
|
626,400 | ||
| 3 |
TUDOR INVESTMENT CORP ET AL
13F
CIK 923093 · Registered investment adviser · Jun 30, 2026
|
300,000 | ||
| 4 |
Qube Research & Technologies Ltd
13F
CIK 1729829 · Exempt reporting adviser · Jun 30, 2026
|
250,000 | ||
| 5 |
TORONTO DOMINION BANK
13F
CIK 947263 · Bank · Jun 30, 2026
|
166,060 | ||
| 6 |
Clear Street Group Inc.
13F
CIK 1881567 · Unknown · Jun 30, 2026
|
118,425 | ||
| 7 |
HRT FINANCIAL LP
13F
CIK 1475597 · Unknown · Jun 30, 2026
|
27,389 | ||
| 8 |
LONGFELLOW INVESTMENT MANAGEMENT CO LLC
13F
CIK 1167487 · Registered investment adviser · Jun 30, 2026
|
8,414 | ||
| 9 |
UBS Group AG
13F
CIK 1610520 · Bank · Jun 30, 2026
|
240 |
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.