Corundum Group, Inc. holds a focused book of 112 reported positions worth $337.1M as of Q2 2026 (disclosed Aug 7, 2026, a ~38-day 13F lag). This quarter Honeywell Aerospace Inc first appears in 13F filings (one of 2 new listings in the book), a listing rather than a purchase; they opened ExxonMobil Holdings Corp and trimmed Ishares Russell 2000 Growth. Their largest long position is Ishares Russell 1000 Growth at 13% of the reported non-option book.
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.
39% mapped to company sectors
+4 sectors below the cut, 2% together
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 (an exit at the prior quarter-end), no cost basis
Other tracked managers holding the same core names as Corundum Group, Inc.
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| Innovator Capital Management, LLC | 8 / 80 | $2.9B |
| BlueSpruce Investments, LP | 10 / 80 | $641.9M |
| United American Securities Inc. (d/b/a UAS Asset Management) | 10 / 80 | $453.6M |
| Hoffman, Alan N Investment Management | 9 / 80 | $161.9M |
| Greenbrier Partners Capital Management, LLC | 8 / 80 | $1.2B |
| Ketron Financial | 21 / 80 | $280.9M |
| 9823 Capital, L.P. | 9 / 80 | $126.7M |
| Ardent Capital Management, Inc. | 23 / 80 | $203.6M |
Ranked by the share of each fund's own book sitting in the names it shares with Corundum Group, Inc.: only funds sharing at least a tenth of the book qualify. Index giants, bank custody books and market makers are excluded. They hold everything, so their overlap says nothing.
Bars show each position's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Ishares Russell 1000 Growth Et CS | $42.4M | 341.7K | 12.6% | ▲+300% Added · +256K sh | |
| 2 | Ishares Russell 1000 Value ETF CS | $40.5M | 167.2K | 12.0% | ▲+0.9% Added · +1K sh | |
| 3 | Ishares Msci Eafe ETF CS | $17.1M | 165.0K | 5.1% | ▲+1.5% Added · +3K sh | |
| 4 | 3M Company CS | $16.1M | 99.4K | 4.8% | ▲+0.2% Added · +231 sh | |
| 5 | Ishares Russell 2000 Growth Et CS | $13.7M | 34.7K | 4.1% | ▼−1.7% Reduced · −592 sh | |
| 6 | Ishares Russell 2000 Value ETF CS | $11.7M | 53.1K | 3.5% | ▼−0.8% Reduced · −435 sh | |
| 7 | Ishares Russell Mid Cap Growth CS | $11.2M | 76.3K | 3.3% | ▲+1.1% Added · +821 sh | |
| 8 | Ishares Russell Mid Cap Value CS | $10.2M | 61.8K | 3.0% | ▼−10% Reduced · −7K sh | |
| 9 | Lockheed Martin Corp CS | $9.7M | 19.0K | 2.9% | —Held | |
| 10 | State Street SPDR S&P 500 ETF CS | $9.4M | 12.5K | 2.8% | ▲+1.2% Added · +150 sh | |
| 11 | Ishares Trust Ishares Esg Opti CS | $7.4M | 47.9K | 2.2% | ▼−4.4% Reduced · −2K sh | |
| 12 | Linde PLC Ordinary Shares CS | $7.2M | 13.9K | 2.1% | ▼−12% Reduced · −2K sh | |
| 13 | Apple Inc CS | $7.1M | 24.5K | 2.1% | ▲+4.0% Added · +941 sh | |
| 14 | Vanguard Russell 1000 Value Et CS | $5.1M | 47.8K | 1.5% | ▲+1.4% Added · +665 sh | |
| 15 | Microsoft Corp CS | $4.7M | 12.5K | 1.4% | ▲+0.4% Added · +51 sh | |
| 16 | Ishares Russell 1000 ETF CS | $4.5M | 11.0K | 1.3% | ▲+2.4% Added · +258 sh | |
| 17 | Ishares Russell 2000 ETF CS | $4.2M | 14.0K | 1.2% | ▲+2.8% Added · +376 sh | |
| 18 | Intel Corp CS | $4.2M | 29.9K | 1.2% | ▲+0.3% Added · +81 sh | |
| 19 | Caterpillar Inc CS | $3.6M | 3.3K | 1.1% | ▼−0.7% Reduced · −22 sh | |
| 20 | Invesco Exchange Traded FD TR CS | $3.5M | 47.3K | 1.1% | ▲+2.1% Added · +976 sh | |
| 21 | Nvidia Corp CS | $3.5M | 17.5K | 1.0% | ▲+3.0% Added · +515 sh | |
| 22 | Alphabet Inc Class A Common ST CS | $3.5M | 9.8K | 1.0% | ▲+1.0% Added · +98 sh | |
| 23 | SPDR Gold Shares ETF CS | $3.5M | 9.4K | 1.0% | ▲+0.1% Added · +10 sh | |
| 24 | Alphabet Inc Class C Capital S CS | $3.4M | 9.5K | 1.0% | ▲+6.0% Added · +537 sh | |
| 25 | SPDR Series Trust State Street CS | $3.3M | 37.2K | 1.0% | ▲+11% Added · +4K sh | |
| 26 | JPMorgan Chase & Co CS | $3.2M | 9.8K | 1.0% | ▲+0.9% Added · +87 sh | |
| 27 | Vanguard S&P 500 ETF CS | $2.9M | 4.2K | 0.8% | ▲+5.3% Added · +208 sh | |
| 28 | Ishares S&P 500 Growth ETF CS | $2.8M | 20.4K | 0.8% | ▼−0.3% Reduced · −65 sh | |
| 29 | ExxonMobil Holdings Corporatio CS | $2.6M | 18.8K | 0.8% | ▲New New position | |
| 30 | Broadcom Inc Common Stock CS | $2.6M | 6.8K | 0.8% | ▼−0.5% Reduced · −34 sh | |
| 31 | Select Sector SPDR Trust State CS | $2.4M | 53.4K | 0.7% | ▲+2.7% Added · +1K sh | |
| 32 | Cisco Systems Inc CS | $2.4M | 20.2K | 0.7% | ▲+0.2% Added · +38 sh | |
| 33 | First Trust Global Tactical Co CS | $2.3M | 84.2K | 0.7% | ▲+1.2% Added · +981 sh | |
| 34 | Nushares ETF TR Small Cap ETF CS | $2.3M | 43.3K | 0.7% | ▼−4.5% Reduced · −2K sh | |
| 35 | Ishares Core S&P Mid Cap ETF CS | $2.1M | 27.1K | 0.6% | ▼−2.2% Reduced · −600 sh | |
| 36 | Amazon.com Inc CS | $2.0M | 8.6K | 0.6% | ▲+1.8% Added · +151 sh | |
| 37 | Visa Inc CL A Common Stock CS | $2.0M | 6.0K | 0.6% | ▲+0.7% Added · +44 sh | |
| 38 | Eli Lilly & Co CS | $2.0M | 1.7K | 0.6% | ▲+0.6% Added · +10 sh | |
| 39 | Abbvie Inc CS | $2.0M | 8.0K | 0.6% | ▼−0.7% Reduced · −55 sh | |
| 40 | Johnson & Johnson Common Stock CS | $2.0M | 7.8K | 0.6% | ▼−0.3% Reduced · −23 sh | |
| 41 | Goldman Sachs Group Inc CS | $1.9M | 1.9K | 0.6% | ▲+0.5% Added · +10 sh | |
| 42 | US Bancorp Del Com CS | $1.7M | 28.0K | 0.5% | ▲+0.7% Added · +197 sh | |
| 43 | Ecolab Inc CS | $1.6M | 5.6K | 0.5% | ▼−0.1% Reduced · −9 sh | |
| 44 | Bristol Myers Squibb Co CS | $1.5M | 25.8K | 0.4% | ▲+0.3% Added · +87 sh | |
| 45 | Home Depot Inc CS | $1.4M | 4.1K | 0.4% | ▲+1.2% Added · +49 sh | |
| 46 | Bank Of America Corp CS | $1.4M | 24.9K | 0.4% | ▲+1.1% Added · +259 sh | |
| 47 | Costco Wholesale Corp-New CS | $1.4M | 1.5K | 0.4% | ▲+1.9% Added · +28 sh | |
| 48 | Merck & Co Inc CS | $1.4M | 10.7K | 0.4% | ▲+1.9% Added · +205 sh | |
| 49 | Duke Energy Corporation Holdin CS | $1.3M | 10.6K | 0.4% | ▼−1.4% Reduced · −146 sh | |
| 50 | Waste Management Inc Del CS | $1.3M | 6.0K | 0.4% | ▲+1.1% Added · +66 sh |
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As-of date vs the date the SEC received each filing
Reported 13F total per quarter. Raw filing totals can include option notional.
Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. Book totals and portfolio weights cover reported non-option positions, which can include notes and warrants. 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.