Who owns Marchex (MCHX)
Which tracked institutional funds hold MCHX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MCHX 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
The tracked-fund tape on MCHX is one-sided between 2026-Q1 and 2026-Q2: 1 added or opened and 0 trimmed or exited — on balance accumulating.
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
MCHX’s largest tracked holder by dollar value, Edenbrook Capital, LLC, sizes it at 8.3% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 8.3pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in MCHX 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 28 tracked filers holding MCHX, 8 increased or opened the position and 11 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 MCHX 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.
Largest adds
- Edenbrook Capital, LLC$880K
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 |
|---|---|---|---|---|
| Edenbrook Capital, LLC | 14,664,380 | $24M | 66.8% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 1,576,464 | $3M | 7.2% | 2026-Q2 |
| Kanen Wealth Management LLC | 1,300,388 | $2M | 6.2% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC trimmed | 1,079,881 | $2M | 4.9% | 2026-Q2 |
| BlackRock, Inc. added | 656,221 | $1M | 3.0% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 400,627 | $645K | 1.8% | 2026-Q2 |
| P.A.W. CAPITAL CORP | 400,000 | $644K | 1.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 203,633 | $328K | 0.9% | 2026-Q2 |
| Arax Advisory Partners new | 145,908 | $235K | 0.7% | 2026-Q2 |
| STATE STREET CORP | 140,696 | $227K | 0.6% | 2026-Q2 |
| Acuitas Investments, LLC trimmed | 102,734 | $167K | 0.5% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 70,345 | $113K | 0.3% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 66,241 | $107K | 0.3% | 2026-Q2 |
| MARATHON CAPITAL MANAGEMENT added | 64,000 | $103K | 0.3% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 44,593 | $72K | 0.2% | 2026-Q2 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC trimmed | 42,328 | $68K | 0.2% | 2026-Q2 |
| MORGAN STANLEY | 33,136 | $53K | 0.2% | 2026-Q2 |
| LPL Financial LLC | 31,190 | $50K | 0.1% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 24,313 | $39K | 0.1% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 17,360 | $28K | 0.1% | 2026-Q2 |
| Vanguard Global Advisers, LLC | 11,241 | $18K | 0.1% | 2026-Q2 |
| Independent Advisor Alliance | 10,000 | $16K | 0.0% | 2026-Q2 |
| Tower Research Capital LLC (TRC) added | 2,930 | $5K | 0.0% | 2026-Q2 |
| BARCLAYS PLC trimmed | 63 | $101 | 0.0% | 2026-Q2 |
| Clearstead Advisors, LLC new | 50 | $81 | 0.0% | 2026-Q2 |
| JPMORGAN CHASE & CO | 43 | $70 | 0.0% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS | 2 | $3 | 0.0% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN | 1 | $1 | 0.0% | 2026-Q2 |
| ACADIAN ASSET MANAGEMENT LLC trimmed | 211,619 | $327K | 0.9% | 2026-Q1 stale (1 quarter behind) |
| Black Diamond Financial, LLC new | 20,000 | $31K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| UBS Group AG added | 626 | $970 | 0.0% | 2026-Q1 stale (1 quarter behind) |
| Arcadia Wealth Management, Inc. | 29,050 | $48K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| XTX Topco Ltd added | 15,416 | $26K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| BANK OF AMERICA CORP /DE/ | 38 | $63 | 0.0% | 2025-Q4 stale (2 quarters behind) |
| RBF Capital, LLC | 41,600 | $75K | 0.2% | 2025-Q3 stale (3 quarters behind) |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 30,924 | $55K | 0.2% | 2025-Q3 stale (3 quarters behind) |
| CITIGROUP INC new | 28 | $50 | 0.0% | 2025-Q3 stale (3 quarters behind) |
| ROYAL BANK OF CANADA new | 7 | — | 0.0% | 2025-Q3 stale (3 quarters behind) |
| AMH Equity Ltd added | 278,276 | $609K | 1.7% | 2025-Q2 stale (4 quarters behind) |
| Manatuck Hill Partners, LLC new | 40,000 | $88K | 0.2% | 2025-Q2 stale (4 quarters behind) |
| Financial Advocates Investment Management | 10,000 | $22K | 0.1% | 2025-Q2 stale (4 quarters behind) |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | — | 0.0% | 2025-Q2 stale (4 quarters behind) |
1 parent filing withheld from the table above, and from the coverage figures, to avoid listing one book twice: VANGUARD GROUP INC (last filed 2025-Q4, 1,294,755 shares) reconciles to its 3 current affiliates (1,294,755 shares) — 0.000% apart.
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.