Marchex Inc. Class BMCHX
13F holders, Q1 2026 (March 31)At the end of Q1 2026, 28 institutions reported holding Marchex Inc. Class B (MCHX) in their 13F filings, up 2 from Q4 2025. 3 opened new positions and 3 sold out. The largest holders were Edenbrook Capital, LLC ($22.7M), Renaissance Technologies ($2.5M) and Kanen Wealth Management LLC ($2.0M). 2 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Marchex Inc. Class B
- CUSIP
- 56624R108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 3 | $264K |
| Exits | 3 | $74K |
All 13F filers, Q4 2025 → Q1 2026: 237,457 shares bought and 138,882 shares sold, net +98,575 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 28 holders
| Edenbrook Capital, LLC | 11.62% | No change | 14,664,380 | $22.7M |
| Renaissance Technologies | 0.00% | Reduce -3.1% | 1,605,904 | $2.5M |
| Kanen Wealth Management LLC | 0.72% | Add +4.1% | 1,300,388 | $2.0M |
| Vanguard Capital Management LLC | 0.00% | — | 1,081,336 | $1.7M |
| BlackRock, Inc. | 0.00% | Add +0.8% | 639,995 | $992K |
| Geode Capital Management, LLC | 0.00% | Add +0.4% | 404,806 | $628K |
| P.A.W. Capital Corp. | 0.50% | No change | 400,000 | $620K |
| Acadian Asset Management LLC | 0.00% | Reduce -16.8% | 211,619 | $327K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 202,178 | $313K |
| State Street Corp. | 0.00% | Add +4.5% | 140,696 | $218K |
| Acuitas Investments, LLC | 14.70% | New | 133,702 | $207K |
| Northern Trust Corp. | 0.00% | No change | 76,029 | $118K |
| Dimensional Fund Advisors LP | 0.00% | No change | 66,276 | $103K |
| Marathon Capital Management | 0.02% | No change | 61,500 | $95K |
| Bridgeway Capital Management, LLC | 0.00% | No change | 56,828 | $88K |
| Goldman Sachs Group Inc. | 0.00% | Add +5.6% | 47,428 | $74K |
| Morgan Stanley | 0.00% | No change | 33,136 | $51K |
| LPL Financial LLC | 0.00% | Reduce -0.2% | 31,190 | $48K |
| Charles Schwab Investment Management Inc. | 0.00% | No change | 24,313 | $38K |
| Black Diamond Financial, LLC | 0.00% | New | 20,000 | $31K |
| Citadel Advisors | 0.00% | New | 16,629 | $26K |
| Vanguard Global Advisers, LLC | 0.00% | — | 11,241 | $17K |
| Independent Advisor Alliance | 0.00% | No change | 10,000 | $16K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +48.2% | 2,091 | $3K |
| UBS Group AG | 0.00% | Add +636.5% | 626 | $970 |
| JPMorgan Chase & Co. | 0.00% | No change | 43 | $67 |
| BNP Paribas Financial Markets | 0.00% | No change | 2 | $3 |
| Wells Fargo & Company | 0.00% | No change | 1 | $1 |
"% of holder's portfolio" is MCHX's weight in each manager's 13F, not the share of Marchex Inc. Class B the manager owns.