Who owns MAMB
Which tracked institutional funds hold MAMB, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MAMB company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-08-19). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
2 tracked funds added or opened MAMB while 1 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
MAMB’s largest tracked holder by dollar value, Kingsview Wealth Management, LLC, sizes it at 2.2% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 2.2pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in MAMB divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 9 tracked filers holding MAMB, 7 increased or opened the position and 3 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in MAMB between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
Full exits 1
- FIG FINANCIAL ADVISORY SERVICES INC /ADV$2M
Largest adds
- Kingsview Wealth Management, LLC$11M
- LPL Financial LLC$947K
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| Kingsview Wealth Management, LLC added | 7,521,062 | $181M | 97.1% | 2026-Q2 |
| LPL Financial LLC added | 80,380 | $2M | 1.0% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 15,460 | $372K | 0.2% | 2026-Q2 |
| TBH Global Asset Management, LLC new | 11,469 | $276K | 0.1% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 10,767 | $259K | 0.1% | 2026-Q2 |
| OSAIC HOLDINGS, INC. added | 6,751 | $162K | 0.1% | 2026-Q2 |
| MORGAN STANLEY added | 5,065 | $122K | 0.1% | 2026-Q2 |
| UBS Group AG trimmed | 802 | $19K | 0.0% | 2026-Q2 |
| FMR LLC | 11 | $271 | 0.0% | 2026-Q2 |
| FIG FINANCIAL ADVISORY SERVICES INC /ADV new | 90,674 | $2M | 1.2% | 2026-Q1 stale (1 quarter behind) |
| ROYAL BANK OF CANADA new | 3,388 | $82K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| Premier Financial Group new | 2,937 | $70K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| RAYMOND JAMES FINANCIAL INC new | 36 | $831 | 0.0% | 2025-Q2 stale (4 quarters behind) |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | — | 0.0% | 2025-Q2 stale (4 quarters behind) |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.