Muhlenkamp & Co Inc holds a focused book of 28 stocks worth $345.3M as of Q2 2026 (disclosed Aug 18, 2026, a ~49-day 13F lag). This quarter they opened Ishares Silver Trust and trimmed Newmont Corp. Their largest long position is Rush Enterprises Inc-CL A at 7% of the equity book. Cloning the disclosed picks since 2024 would be +30% (+16.2%/yr). That is a simulation of the disclosed long book, not audited returns.
The reported book (valued from quarter-end) returned +39.4%, a 9.0-point gap that is the cost of the ~49-day 13F disclosure lag a real follower can't avoid.
Growth of $10,000 cloning Muhlenkamp & Co Inc's disclosed long 13F book, rebalanced on each filing date (so it reflects each quarter's actual reporting lag, ~49 days for the latest filing, with no look-ahead), total-return basis (dividends reinvested), derived from end-of-day prices. “Their reported book” values the same picks from quarter-end, before they were public. S&P 500 is SPY total return over the same window. Excludes shorts, cash, options and non-13F holdings. Not investment advice.
Top-heavy: focused book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
98% mapped to company sectors
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices, no cost basis
Other tracked managers holding the same core names as Muhlenkamp & Co Inc
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| FMR LLC | 41 / 28 | $222.6B |
| MORGAN STANLEY | 41 / 28 | $166.6B |
| JPMORGAN CHASE & CO | 41 / 28 | $149.3B |
| GOLDMAN SACHS GROUP INC | 41 / 28 | $75.1B |
| ROYAL BANK OF CANADA | 41 / 28 | $48.9B |
| UBS Group AG | 41 / 28 | $43.1B |
| WELLS FARGO & COMPANY/MN | 41 / 28 | $38.9B |
| OSAIC HOLDINGS, INC. | 41 / 28 | $5.0B |
Ranked by how many of Muhlenkamp & Co Inc's top 28 disclosed names each fund also holds: a cross-fund conviction signal from the latest 13F of every tracked manager.
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Rush Enterprises Inc CL A | $24.3M | 332.3K | 7.0% | ▲+0.1% Added · +427 sh | |
| 2 | Newmont Corp COM | $21.6M | 231.1K | 6.3% | ▼~0% Reduced · −92 sh | |
| 3 | Agnico Eagle Mines Ltd COM | $21.5M | 138.5K | 6.2% | ▼~0% Reduced · −67 sh | |
| 4 | Eqt Corp COM | $21.4M | 402.2K | 6.2% | ▲+0.2% Added · +1K sh | |
| 5 | McKesson Corp COM | $20.6M | 27.2K | 6.0% | ▲+0.1% Added · +33 sh | |
| 6 | Berkshire Hathaway Inc Del CL B NEW | $19.3M | 38.5K | 5.6% | ▲+0.4% Added · +144 sh | |
| 7 | Microchip Technology Inc. COM | $18.5M | 203.1K | 5.4% | ▲+0.1% Added · +154 sh | |
| 8 | Apple Inc COM | $18.0M | 62.1K | 5.2% | ▼−0.7% Reduced · −434 sh | |
| 9 | United Rentals Inc COM | $17.8M | 15.7K | 5.1% | ▲+0.4% Added · +70 sh | |
| 10 | Royal Gold Inc COM | $17.6M | 88.1K | 5.1% | ▲+0.2% Added · +196 sh | |
| 11 | Wabtec COM | $17.0M | 63.2K | 4.9% | ▲~0% Added · +1 sh | |
| 12 | BGC Group Inc CL A | $15.5M | 1.45M | 4.5% | ▲+0.2% Added · +3K sh | |
| 13 | Nmi Hldgs Inc COM | $15.1M | 368.6K | 4.4% | ▲+0.6% Added · +2K sh | |
| 14 | SLB Limited COM STK | $15.1M | 323.9K | 4.4% | ▲+0.5% Added · +2K sh | |
| 15 | Microsoft Corp COM | $12.2M | 32.8K | 3.5% | ▼−0.5% Reduced · −161 sh | |
| 16 | Icon Pub Ltd Co SHS | $11.5M | 66.3K | 3.3% | ▲+0.5% Added · +332 sh | |
| 17 | Taylor Morrison Home Corp COM | $11.4M | 158.6K | 3.3% | ▲~0% Added · +19 sh | |
| 18 | Lyondellbasell Industries NV SHS - A - | $9.9M | 187.9K | 2.9% | ▲+0.4% Added · +761 sh | |
| 19 | Celanese Corp Del COM | $9.8M | 212.0K | 2.8% | ▲+0.6% Added · +1K sh | |
| 20 | SPDR Gold TR GOLD SHS | $8.1M | 22.1K | 2.4% | ▼−0.1% Reduced · −15 sh | |
| 21 | ALPS ETF TR ALERIAN MLP | $7.8M | 150.6K | 2.3% | —Held | |
| 22 | Equinox Gold Corp COM | $5.1M | 522.3K | 1.5% | ▲+0.6% Added · +3K sh | |
| 23 | Travelers Companies Inc COM | $2.2M | 6.6K | 0.6% | —Held | |
| 24 | Ge Vernova Inc COM | $1.7M | 1.4K | 0.5% | —Held | |
| 25 | Enterprise Prods Partners L COM | $914K | 24.9K | 0.3% | —Held | |
| 26 | Rush Enterprises Inc CL B | $719K | 9.4K | 0.2% | ▼−0.6% Reduced · −61 sh | |
| 27 | Ishares Silver TR ISHARES | $671K | 12.6K | 0.2% | ▲New New position | |
| 28 | Exxon Mobil Corp COM | $224K | 1.6K | 0.1% | —Held |
The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/1133219/holdings"
Use Arkolith to show MUHLENKAMP & CO INC's latest holdings, largest changes, and filing provenance.
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q2 2026 | Jun 30, 2026 | Aug 18, 2026 | 28 | $345.3M | 13F-HR |
| Q1 2026 | Mar 31, 2026 | May 6, 2026 | 29 | $379.8M | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 4, 2026 | 28 | $371.8M | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 7, 2025 | 31 | $367.9M | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Jul 24, 2025 | 26 | $320.5M | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 13, 2025 | 26 | $305.6M | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Feb 13, 2025 | 30 | $329.5M | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Nov 12, 2024 | 28 | $326.3M | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. The performance line is a simulation of the disclosed long book, not an audited return.