Who owns Mobix Labs (MOBX)
Which tracked institutional funds hold MOBX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MOBX company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 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
1 tracked fund added or opened MOBX 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
MOBX’s largest tracked holder by dollar value, ARMISTICE CAPITAL, LLC, sizes it at 0.1% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.1pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in MOBX 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 32 tracked filers holding MOBX, 8 increased or opened the position and 35 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
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 MOBX 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
- Focus Partners Wealth$1M
Largest adds
- JANE STREET GROUP, LLC$327K
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 |
|---|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC trimmed | 459,158 | $964K | 11.5% | 2026-Q2 |
| Vanguard Capital Wealth Advisors trimmed | 203,774 | $428K | 5.1% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 160,720 | $338K | 4.0% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 111,880 | $235K | 2.8% | 2026-Q2 |
| UBS Group AG trimmed | 92,934 | $195K | 2.3% | 2026-Q2 |
| Corient Private Wealth LP new | 88,209 | $185K | 2.2% | 2026-Q2 |
| Alessandra Capital Management, LLC trimmed | 68,789 | $144K | 1.7% | 2026-Q2 |
| STATE STREET CORP trimmed | 52,630 | $111K | 1.3% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 52,049 | $109K | 1.3% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 25,231 | $53K | 0.6% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 19,373 | $41K | 0.5% | 2026-Q2 |
| Mariner, LLC trimmed | 15,527 | $33K | 0.4% | 2026-Q2 |
| ARISTEIA CAPITAL, L.L.C. | 352,430 | $31K | 0.4% | 2026-Q2 |
| Clear Street Group Inc. trimmed | 317,598 | $28K | 0.3% | 2026-Q2 |
| Krilogy Financial LLC | 10,201 | $21K | 0.3% | 2026-Q2 |
| Arena Capital Advisors, LLC- CA | 190,616 | $17K | 0.2% | 2026-Q2 |
| WHITEBOX ADVISORS LLC | 93,000 | $8K | 0.1% | 2026-Q2 |
| Aristides Capital LLC | 72,377 | $6K | 0.1% | 2026-Q2 |
| MassMutual Private Wealth & Trust, FSB new | 1,700 | $4K | 0.0% | 2026-Q2 |
| Connective Capital Management, LLC | 22,397 | $2K | 0.0% | 2026-Q2 |
| Greenland Capital Management LP | 16,788 | $2K | 0.0% | 2026-Q2 |
| SBI Securities Co., Ltd. trimmed | 698 | $1K | 0.0% | 2026-Q2 |
| Allworth Financial LP trimmed | 555 | $1K | 0.0% | 2026-Q2 |
| Empirical Financial Services, LLC d.b.a. Empirical Wealth Management | 13,000 | $1K | 0.0% | 2026-Q2 |
| Nokomis Capital, L.L.C. trimmed | 11,493 | $1K | 0.0% | 2026-Q2 |
| HARBOUR INVESTMENTS, INC. trimmed | 464 | $974 | 0.0% | 2026-Q2 |
| BARCLAYS PLC added | 217 | $456 | 0.0% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 150 | $315 | 0.0% | 2026-Q2 |
| Arax Advisory Partners new | 52 | $109 | 0.0% | 2026-Q2 |
| HM PAYSON & CO new | 20 | $42 | 0.0% | 2026-Q2 |
| CITIGROUP INC trimmed | 17 | $36 | 0.0% | 2026-Q2 |
| WOLVERINE ASSET MANAGEMENT LLC trimmed | 1 | $2 | 0.0% | 2026-Q2 |
| Focus Partners Wealth trimmed | 0 | $1M | 12.5% | 2026-Q1 stale (1 quarter behind) |
| Beacon Pointe Advisors, LLC trimmed | 79,417 | $27K | 0.3% | 2026-Q1 stale (1 quarter behind) |
| XTX Topco Ltd added | 49,763 | $17K | 0.2% | 2026-Q1 stale (1 quarter behind) |
| PFG Investments, LLC added | 35,580 | $12K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| HCR Wealth Advisors | 30,000 | $10K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| MONEY CONCEPTS CAPITAL CORP new | 25,000 | $8K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| GOLDMAN SACHS GROUP INC new | 22,745 | $8K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| LPL Financial LLC added | 15,500 | $5K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| Virtu Financial LLC trimmed | 24,400 | $3K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 21,649 | $2K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| BlackRock, Inc. new | 6,132 | $2K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| TWO SIGMA SECURITIES, LLC added | 14,690 | $2K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 899 | $300 | 0.0% | 2026-Q1 stale (1 quarter behind) |
| VANGUARD GROUP INC | 1,080,357 | $288K | 3.4% | 2025-Q4 stale (2 quarters behind) |
| CITADEL ADVISORS LLC added | 189,731 | $51K | 0.6% | 2025-Q4 stale (2 quarters behind) |
| TORONTO DOMINION BANK added | 101,860 | $27K | 0.3% | 2025-Q4 stale (2 quarters behind) |
| FINANCIAL MANAGEMENT NETWORK INC | 52,200 | $14K | 0.2% | 2025-Q4 stale (2 quarters behind) |
| StoneX Group Inc. new | 19,800 | $5K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| Tower Research Capital LLC (TRC) trimmed | 8,920 | $2K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| ARMISTICE CAPITAL, LLC added | 4,596,804 | $4M | 44.3% | 2025-Q3 stale (3 quarters behind) |
| Marex Group plc new | 60,905 | $49K | 0.6% | 2025-Q3 stale (3 quarters behind) |
| MORGAN STANLEY trimmed | 27,233 | $22K | 0.3% | 2025-Q3 stale (3 quarters behind) |
| Comprehensive Financial Planning, Inc./PA | 625 | $504 | 0.0% | 2025-Q3 stale (3 quarters behind) |
| Polar Asset Management Partners Inc. trimmed | 438,247 | $44K | 0.5% | 2025-Q2 stale (4 quarters behind) |
| CLEAR STREET LLC | 368,298 | $37K | 0.4% | 2025-Q2 stale (4 quarters behind) |
| Cetera Investment Advisers | 18,069 | $14K | 0.2% | 2025-Q2 stale (4 quarters behind) |
| RAYMOND JAMES FINANCIAL INC new | 266 | $204 | 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.