Mainstream Capital Management LLC holds a focused book of 90 stocks worth $166.1M as of Q2 2026 (disclosed Jul 15, 2026, a ~45-day 13F lag). This quarter they opened Intl Business Machines Corp and trimmed JPMorgan Ultra-Short Income. Their largest long position is JPMorgan Ultra-Short Income at 12% of the equity book.
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/2043084/holdings"
Use Arkolith to show Mainstream Capital Management LLC's latest holdings, largest changes, and filing provenance.
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.
61% 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
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | JPMorgan Ultra-Short Income ETF ETF | $20.3M | 402.2K | 12.2% | ▼−2.5% Reduced · −10K sh | |
| 2 | Apple Inc Com Stock | $9.9M | 34.1K | 5.9% | ▼−4.1% Reduced · −1K sh | |
| 3 | Goldman Sachs Ultra Short Bond ETF ETF | $9.5M | 187.4K | 5.7% | ▲+6.4% Added · +11K sh | |
| 4 | Amazon Com Inc Com Stock | $7.4M | 31.0K | 4.4% | ▼−0.6% Reduced · −184 sh | |
| 5 | Alphabet Inc Cap STK CL C Stock | $7.1M | 20.2K | 4.3% | ▼−0.1% Reduced · −23 sh | |
| 6 | Nvidia Corporation Com Stock | $5.5M | 27.6K | 3.3% | ▼−0.4% Reduced · −120 sh | |
| 7 | Ishares Russell 1000 Growth ETF ETF | $4.3M | 34.3K | 2.6% | ▲+294% Added · +26K sh | |
| 8 | Meta Platforms Inc CL A Stock | $4.2M | 7.5K | 2.5% | ▼−0.8% Reduced · −62 sh | |
| 9 | Corning Inc Com Stock | $3.6M | 14.3K | 2.2% | ▲+0.8% Added · +108 sh | |
| 10 | Ishares Russell 1000 Value ETF ETF | $3.5M | 14.6K | 2.1% | ▼−1.7% Reduced · −248 sh | |
| 11 | Ishares Core S&P 500 ETF ETF | $3.3M | 4.3K | 2.0% | ▼−1.9% Reduced · −83 sh | |
| 12 | Alphabet Inc Cap STK CL A Stock | $3.2M | 8.8K | 1.9% | ▼−2.4% Reduced · −220 sh | |
| 13 | JPMorgan Chase & Co Com Stock | $2.9M | 8.7K | 1.7% | ▼−0.2% Reduced · −17 sh | |
| 14 | Berkshire Hathaway Inc Del CL B New Stock | $2.7M | 5.4K | 1.6% | ▲+0.1% Added · +4 sh | |
| 15 | Eli Lilly & Co Com Stock | $2.7M | 2.3K | 1.6% | ▼−1.8% Reduced · −42 sh | |
| 16 | Crowdstrike Hldgs Inc CL A Stock | $2.6M | 3.5K | 1.6% | ▼−0.3% Reduced · −12 sh | |
| 17 | Palo Alto Networks Inc Com Stock | $2.6M | 7.7K | 1.6% | ▼−0.4% Reduced · −28 sh | |
| 18 | State Street SPDR S&P 500 ETF ETF | $2.6M | 3.5K | 1.6% | —Held | |
| 19 | Tesla Inc Com Stock | $2.5M | 6.0K | 1.5% | ▼−0.1% Reduced · −5 sh | |
| 20 | Advanced Micro Devices Inc Com Stock | $2.3M | 4.0K | 1.4% | ▲+27% Added · +859 sh | |
| 21 | Costco Wholesale Corporation Com Stock | $2.2M | 2.3K | 1.3% | ▼−0.2% Reduced · −5 sh | |
| 22 | SPDR Gold Shares ETF | $2.1M | 5.6K | 1.2% | ▼−9.7% Reduced · −600 sh | |
| 23 | Microsoft Corp Com Stock | $2.0M | 5.4K | 1.2% | ▲+0.1% Added · +5 sh | |
| 24 | Vanguard Information Technology ETF ETF | $1.9M | 16.1K | 1.2% | ▲+699% Added · +14K sh | |
| 25 | Goldman Sachs Group Inc Com Stock | $1.9M | 1.9K | 1.2% | ▼−0.4% Reduced · −7 sh | |
| 26 | Interactive Brokers Group Inc Com CL A Stock | $1.9M | 21.9K | 1.1% | ▲+0.5% Added · +109 sh | |
| 27 | Ge Vernova Inc Com Stock | $1.9M | 1.6K | 1.1% | ▲+16% Added · +225 sh | |
| 28 | TJX Cos Inc New Com Stock | $1.9M | 12.3K | 1.1% | ▲+0.3% Added · +33 sh | |
| 29 | International Business Machs Com Stock | $1.9M | 6.6K | 1.1% | ▲New New position | |
| 30 | Ishares Msci USA Quality Factor ETF ETF | $1.8M | 8.2K | 1.1% | ▼−0.3% Reduced · −21 sh | |
| 31 | Vanguard Mid-Cap Value ETF ETF | $1.8M | 9.0K | 1.1% | ▼−0.1% Reduced · −9 sh | |
| 32 | Vanguard Mid-Cap Growth ETF ETF | $1.8M | 5.8K | 1.1% | ▼−0.3% Reduced · −16 sh | |
| 33 | Cava Group Inc Com Stock | $1.7M | 21.4K | 1.0% | ▲+0.3% Added · +57 sh | |
| 34 | Netflix Inc. Com Stock | $1.6M | 23.0K | 1.0% | ▲+0.1% Added · +15 sh | |
| 35 | Toast Inc CL A Stock | $1.6M | 56.8K | 1.0% | ▼−1.1% Reduced · −610 sh | |
| 36 | Schwab Charles Corp Com Stock | $1.5M | 16.0K | 0.9% | ▼−4.0% Reduced · −663 sh | |
| 37 | Eaton Corp PLC SHS Stock | $1.5M | 3.5K | 0.9% | ▲+0.8% Added · +29 sh | |
| 38 | Walmart Inc Com Stock | $1.5M | 12.9K | 0.9% | ▼−1.5% Reduced · −203 sh | |
| 39 | Ishares Msci Eafe Value ETF ETF | $1.4M | 18.5K | 0.9% | ▼−0.1% Reduced · −19 sh | |
| 40 | Dover Corp Com Stock | $1.3M | 5.7K | 0.8% | ▲+0.9% Added · +54 sh | |
| 41 | Legalzoom Com Inc Com Stock | $1.2M | 200.0K | 0.7% | ▼−11% Reduced · −25K sh | |
| 42 | Ishares Msci Eafe Growth ETF ETF | $1.2M | 9.8K | 0.7% | ▼−0.1% Reduced · −10 sh | |
| 43 | Oreilly Automotive Inc Com Stock | $1.2M | 12.6K | 0.7% | ▼−0.6% Reduced · −74 sh | |
| 44 | Ishares U.S. Technology ETF ETF | $1.1M | 4.5K | 0.7% | ▼−0.5% Reduced · −21 sh | |
| 45 | Visa Inc Com CL A Stock | $1.1M | 3.2K | 0.7% | ▼−3.6% Reduced · −121 sh | |
| 46 | Broadcom Inc Com Stock | $1.1M | 2.8K | 0.6% | ▼−1.0% Reduced · −28 sh | |
| 47 | Applied Matls Inc Com Stock | $1.1M | 1.5K | 0.6% | —Held | |
| 48 | Ishares Core Msci Emerging Markets ETF ETF | $973K | 11.7K | 0.6% | ▼−0.1% Reduced · −6 sh | |
| 49 | Ishares S&P 500 Growth ETF ETF | $945K | 6.9K | 0.6% | ▼−0.1% Reduced · −5 sh | |
| 50 | Chevron Corporation Com Stock | $847K | 5.1K | 0.5% | —Held |
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q2 2026 | Jun 30, 2026 | Jul 15, 2026 | 90 | $166.1M | 13F-HR |
| Q1 2026 | Mar 31, 2026 | Apr 17, 2026 | 88 | $149.1M | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Jan 21, 2026 | 88 | $152.8M | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Oct 20, 2025 | 87 | $150.4M | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Jul 15, 2025 | 84 | $137.5M | 13F-HR |
| Q1 2025 | Mar 31, 2025 | Apr 28, 2025 | 86 | $126.2M | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Feb 6, 2025 | 322 | $142.6M | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Oct 31, 2024 | 84 | $117.6M | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly ~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. Price-derived performance is withheld until the price-source policy and freshness gate are green.