Latest Period
Q1 2026
Security Snapshot
MARCHEX INC - Class B Common Stock, par value $0.01 per share (MCHX) Institutional Ownership
CUSIP: 56624R108
13F Institutional Holders and Ownership History from Q1 2014 to Q2 2026
Institutions Reporting
28
Shares (Excl. Options)
21,242,337
Price
$1.55
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- Security type / class
- Equity / Class B Common Stock, par value $0.01 per share
- Symbol
- MCHX on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 21,242,337
- Total 13F value
- $32,924,777
- Portfolio coverage rank
- 0%
- Share change
- +98,575
- Value change
- +$148,099
- Number of holders
- 28
- Shares outstanding
- 47,640,459
- SEC-reported price per share
- $1.61
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
2 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- MCHX - MARCHEX INC - Class B Common Stock, par value $0.01 per share is tracked under CUSIP 56624R108.
- 28 institutions reported positions in Q1 2026.
- 1 significant owner is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 28 to 2 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $32,924,777 to $747,040.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 28 institutions filings for Q1 2026.
Security key
56624R108
Latest holder period
Q1 2026
13F holders
28
13D/G owners
1
CIK / CUSIP context first
Open Q1 2026 holders
MCHX full holder history
MARCHEX INC SEC filings
MARCHEX INC company facts
MARCHEX INC insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 56624R108:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
1
Security
MCHX
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| HOROWITZ RUSSELL C | 18% | $13,132,093 | 8,813,485 | Russell C. Horowitz | 01 Jul 2026 |
As of 31 Mar 2026, 28 institutional investors reported holding 21,242,337 shares of MARCHEX INC - Class B Common Stock, par value $0.01 per share (MCHX). This represents 45% of the company’s total 47,640,459 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
45%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Edenbrook Capital, LLC | 31% | 14,664,380 | 0% | 12% | $22,729,789 |
| RENAISSANCE TECHNOLOGIES LLC | 3.4% | 1,605,904 | -3.1% | 0% | $2,489,151 |
| Kanen Wealth Management LLC | 2.7% | 1,300,388 | +4.1% | 0.72% | $2,015,601 |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.3% | 1,081,336 | 0% | 0% | $1,676,071 |
| BlackRock, Inc. | 1.3% | 639,995 | +0.76% | 0% | $991,992 |
| GEODE CAPITAL MANAGEMENT, LLC | 0.85% | 404,806 | +0.36% | 0% | $627,600 |
| P.A.W. CAPITAL CORP | 0.84% | 400,000 | 0% | 0.5% | $620,000 |
| ACADIAN ASSET MANAGEMENT LLC | 0.44% | 211,619 | -17% | 0% | $327,000 |
| VANGUARD FIDUCIARY TRUST CO | 0.42% | 202,178 | 0% | 0% | $313,376 |
| STATE STREET CORP | 0.3% | 140,696 | +4.5% | 0% | $218,079 |
| Acuitas Investments, LLC | 0.28% | 133,702 | 15% | $207,238 | |
| NORTHERN TRUST CORP | 0.16% | 76,029 | 0% | 0% | $117,845 |
| DIMENSIONAL FUND ADVISORS LP | 0.14% | 66,276 | 0% | 0% | $102,742 |
| MARATHON CAPITAL MANAGEMENT | 0.13% | 61,500 | 0% | 0.02% | $95,325 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 0.12% | 56,828 | 0% | 0% | $88,083 |
| GOLDMAN SACHS GROUP INC | 0.1% | 47,428 | +5.6% | 0% | $73,513 |
| MORGAN STANLEY | 0.07% | 33,136 | 0% | 0% | $51,361 |
| LPL Financial LLC | 0.07% | 31,190 | -0.16% | 0% | $48,345 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.05% | 24,313 | 0% | 0% | $37,685 |
| Black Diamond Financial, LLC | 0.04% | 20,000 | 0% | $31,000 | |
| CITADEL ADVISORS LLC | 0.03% | 16,629 | 0% | $25,775 | |
| Vanguard Global Advisers, LLC | 0.02% | 11,241 | 0% | 0% | $17,424 |
| Independent Advisor Alliance | 0.02% | 10,000 | 0% | 0% | $15,500 |
| Tower Research Capital LLC (TRC) | 0% | 2,091 | +48% | 0% | $3,241 |
| UBS Group AG | 0% | 626 | +636% | 0% | $970 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
50
Latest
Q1 2026
Rows shown
1-25 of 50
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 464,000 | $747,040 | +$4,025 | $1.61 | 2 |
| 2026 Q1 | 21,242,337 | $32,924,777 | +$148,099 | $1.55 | 28 |
| 2025 Q4 | 21,143,762 | $35,122,336 | -$117,371 | $1.66 | 26 |
| 2025 Q3 | 21,205,621 | $38,175,797 | -$121,980 | $1.80 | 30 |
| 2025 Q2 | 21,186,259 | $46,302,489 | +$995,274 | $2.16 | 29 |
| 2025 Q1 | 20,749,034 | $33,820,290 | +$570,916 | $1.63 | 32 |
| 2024 Q4 | 20,381,892 | $35,657,952 | +$515,036 | $1.75 | 30 |
| 2024 Q3 | 20,080,394 | $37,535,159 | -$197,171 | $1.87 | 27 |
| 2024 Q2 | 20,212,809 | $31,126,876 | -$1,334,864 | $1.54 | 28 |
| 2024 Q1 | 21,081,842 | $28,880,650 | -$1,975,390 | $1.37 | 27 |
| 2023 Q4 | 22,527,286 | $30,635,281 | -$107,173 | $1.36 | 28 |
| 2023 Q3 | 22,604,956 | $32,776,900 | -$224,153 | $1.45 | 28 |
| 2023 Q2 | 22,759,549 | $48,244,523 | -$519,574 | $2.12 | 28 |
| 2023 Q1 | 23,004,694 | $41,864,960 | -$1,538,616 | $1.82 | 26 |
| 2022 Q4 | 26,868,534 | $42,964,369 | -$449,334 | $1.60 | 28 |
| 2022 Q3 | 24,116,837 | $40,512,825 | -$797,748 | $1.68 | 25 |
| 2022 Q2 | 24,595,484 | $32,464,648 | -$193,073 | $1.32 | 26 |
| 2022 Q1 | 24,719,423 | $56,601,569 | -$846,772 | $2.29 | 28 |
| 2021 Q4 | 25,078,957 | $62,193,699 | +$395,484 | $2.48 | 31 |
| 2021 Q3 | 24,113,180 | $71,974,045 | +$295,075 | $2.98 | 35 |
| 2021 Q2 | 24,008,867 | $73,465,096 | -$1,035,088 | $3.06 | 43 |
| 2021 Q1 | 24,383,175 | $68,516,925 | -$612,713 | $2.81 | 38 |
| 2020 Q4 | 24,715,383 | $48,426,343 | -$4,285,012 | $1.96 | 40 |
| 2020 Q3 | 26,858,286 | $56,940,241 | -$1,356,513 | $2.12 | 49 |
| 2020 Q2 | 27,719,238 | $43,798,013 | -$1,892,302 | $1.58 | 59 |