Investor
Corundum Group, Inc.
CIK 0001486083 · filed 2026-04-20 · SEC filing
13F book
$299.2M
Positions
108
9 new · 14 sold
Largest name
12.2%
Ishares Tr
Est. mark
−$3.63M
Price effect on 99 names still held. Flow $4.83M.
| Name | Ticker | Shares | Value | Weight | Est. mark | Change |
|---|---|---|---|---|---|---|
| Ishares Tr | — | 85.4K | $36.4M | 12.2% | −$3.57M | Added$393.6K |
| Ishares Tr | — | 165.7K | $35.4M | 11.8% | $543K | Added$1.12M |
| Ishares Tr | — | 162.5K | $15.8M | 5.3% | $171.1K | Added$845.4K |
| 3M CO | MMM | 99.2K | $14.4M | 4.8% | −$1.46M | Added−$1.29M |
| Lockheed Martin Corp | LMT | 19K | $11.5M | 3.8% | $2.3M | Cut−$948.7K |
| Ishares Tr | — | 35.3K | $11.1M | 3.7% | −$315.4K | Added$7.49K |
| Ishares Tr | — | 53.5K | $10.1M | 3.4% | $448.4K | Cut$383K |
| Ishares Tr | — | 68.8K | $10M | 3.4% | $318.4K | Added$453.1K |
| Ishares Tr | — | 75.5K | $9.67M | 3.2% | −$604.9K | Added$280.2K |
| Spdr S&P 500 Etf Tr | — | 12.4K | $8.06M | 2.7% | −$387.7K | Added−$316.2K |
| Linde Plc | LIN | 15.9K | $7.86M | 2.6% | $1.1M | Cut−$2.25M |
| Ishares Tr | — | 50.1K | $6.62M | 2.2% | −$363.3K | Cut−$493.3K |
| Apple Inc. | AAPL | 23.5K | $5.97M | 2.0% | −$424.1K | Added−$413.7K |
| Microsoft Corp | MSFT | 12.5K | $4.61M | 1.5% | −$1.41M | Cut−$2.77M |
| Vanguard Scottsdale Fds | — | 47.2K | $4.42M | 1.5% | $58.1K | Added$697.4K |
| Spdr Gold Tr | — | 9.39K | $4.04M | 1.4% | $295.2K | Added$598.1K |
| Ishares Tr | — | 10.7K | $3.82M | 1.3% | −$148.5K | Added$537.9K |
| Invesco Exch Traded Fd Tr Ii | — | 46.3K | $3.39M | 1.1% | $66.7K | Added$618.1K |
| Ishares Tr | — | 13.6K | $3.38M | 1.1% | $19.9K | Added$716.5K |
| Exxon Mobil Corp | — | 18.6K | $3.16M | 1.1% | $875.2K | Added$1.02M |
| Nvidia Corp | NVDA | 17K | $2.96M | 1.0% | −$199.4K | Added−$115.1K |
| Jpmorgan Chase & Co. | — | 9.75K | $2.87M | 1.0% | −$271.5K | Added−$250K |
| Alphabet Inc | — | 9.66K | $2.78M | 0.9% | −$245.9K | Cut−$520.4K |
| Alphabet Inc | — | 8.97K | $2.57M | 0.9% | −$235.5K | Added−$169.2K |
| Spdr Series Trust | — | 33.5K | $2.57M | 0.9% | −$123.4K | Cut−$575.9K |
| First Tr Exchange Trad Fd Vi | — | 83.2K | $2.39M | 0.8% | $386.1K | Added$752.1K |
| Select Sector Spdr Tr | — | 51.9K | $2.38M | 0.8% | $136.6K | Added$561.4K |
| Caterpillar Inc | CAT | 3.36K | $2.38M | 0.8% | $430.9K | Added$559.1K |
| Vanguard Index Fds | — | 3.94K | $2.36M | 0.8% | −$83.7K | Added$582K |
| Ishares Tr | — | 20.5K | $2.32M | 0.8% | −$208.1K | Cut−$291.9K |
| Broadcom Inc. | AVGO | 6.82K | $2.11M | 0.7% | −$237.4K | Added−$135K |
| Nushares Etf Tr | — | 45.3K | $2.04M | 0.7% | $18.6K | Cut−$16.5K |
| Johnson & Johnson | JNJ | 7.78K | $1.9M | 0.6% | $275K | Added$383.3K |
| Ishares Tr | — | 27.7K | $1.87M | 0.6% | $42.3K | Cut−$91K |
| Visa Inc. | V | 5.91K | $1.79M | 0.6% | −$214K | Added$236.3K |
| Amazon Com Inc | AMZN | 8.45K | $1.76M | 0.6% | −$190.5K | Cut−$336K |
| AbbVie Inc. | ABBV | 8.05K | $1.75M | 0.6% | −$88.6K | Cut−$147.1K |
| Goldman Sachs Group Inc | — | 1.89K | $1.6M | 0.5% | −$56.3K | Added$95.9K |
| Cisco Sys Inc | — | 20.2K | $1.57M | 0.5% | $10.3K | Added$148.3K |
| Bristol-Myers Squibb Co | — | 25.7K | $1.56M | 0.5% | $158.6K | Added$285.5K |
| Eli Lilly & Co | LLY | 1.67K | $1.54M | 0.5% | −$234.2K | Added−$88K |
| Ecolab Inc. | ECL | 5.66K | $1.5M | 0.5% | $17.8K | Added$169.4K |
| Costco Whsl Corp New | — | 1.48K | $1.47M | 0.5% | $198.3K | Cut$97.4K |
| Us Bancorp Del | — | 27.8K | $1.45M | 0.5% | −$34.2K | Added$94.2K |
| Walmart Inc. | WMT | 11.6K | $1.44M | 0.5% | $135.8K | Added$260.4K |
| Duke Energy Corp New | — | 10.8K | $1.41M | 0.5% | $54.2K | Added$947.4K |
| Waste Mgmt Inc Del | — | 5.95K | $1.37M | 0.5% | $53.9K | Added$192.9K |
| Home Depot, Inc. | HD | 4.05K | $1.33M | 0.4% | −$54.3K | Added$105.2K |
| Intel Corp | INTC | 29.8K | $1.31M | 0.4% | $195.8K | Added$314.6K |
| Amgen Inc | AMGN | 3.64K | $1.28M | 0.4% | $80.5K | Added$206.4K |
| Merck & Co., Inc. | MRK | 10.5K | $1.26M | 0.4% | $143.6K | Added$256.8K |
| Ishares Tr | — | 5.97K | $1.26M | 0.4% | −$5.49K | Cut−$79.7K |
| Mastercard Inc | MA | 2.48K | $1.24M | 0.4% | −$116.8K | Added$302.9K |
| Berkshire Hathaway Inc Del | — | 2.55K | $1.22M | 0.4% | −$59K | Added−$41.2K |
| Bank America Corp | — | 24.6K | $1.2M | 0.4% | −$133.6K | Added$25.6K |
| Oracle Corp | — | 8.12K | $1.19M | 0.4% | −$325K | Added−$130.8K |
| Chevron Corp New | CVX | 5.67K | $1.17M | 0.4% | $256.8K | Added$455.4K |
| Mcdonalds Corp | MCD | 3.34K | $1.04M | 0.3% | $17.2K | Cut−$171.4K |
| Abbott Labs | ABT | 9.92K | $1.02M | 0.3% | −$217.6K | Added−$186.3K |
| Fedex Corp | FDX | 2.69K | $957.4K | 0.3% | $145.5K | Added$333.2K |
| Pfizer Inc | PFE | 32.8K | $920.9K | 0.3% | $103.2K | Added$113.2K |
| Coca Cola Co | KO | 12K | $915.3K | 0.3% | $65K | Added$175.3K |
| Ishares Tr | — | 7.33K | $911.7K | 0.3% | $30.3K | Cut$726 |
| Medtronic Plc | MDT | 10.3K | $893.6K | 0.3% | −$76.9K | Added$108.5K |
| Automatic Data Processing In | — | 4.29K | $871.6K | 0.3% | −$148K | Added$167.3K |
| Verizon Communications Inc | VZ | 16.8K | $844.4K | 0.3% | — | New |
| Honeywell Intl Inc | — | 3.72K | $841.5K | 0.3% | $108.2K | Added$159.1K |
| Procter And Gamble Co | PG | 5.77K | $833.3K | 0.3% | $4.87K | Added$215.9K |
| Xcel Energy Inc | — | 9.59K | $761.4K | 0.3% | $39.7K | Added$235.5K |
| Disney Walt Co | — | 7.74K | $746.2K | 0.2% | −$108.1K | Added$38.9K |
| United Parcel Service Inc | UPS | 7.35K | $722.8K | 0.2% | — | New |
| Ishares Tr | — | 7K | $704.3K | 0.2% | $26.2K | Cut$6.8K |
| Solventum Corp | SOLV | 8.21K | $536.4K | 0.2% | −$114.5K | Cut−$115.5K |
| Legg Mason Etf Invt | — | 6.39K | $480.5K | 0.2% | −$45.4K | Added−$43.5K |
| Ge Aerospace | — | 1.54K | $436.7K | 0.1% | −$37.3K | Cut−$61.7K |
| Taiwan Semiconductor Mfg Ltd | — | 1.29K | $436K | 0.1% | $43.9K | Cut$23.3K |
| Texas Instrs Inc | — | 2.18K | $422.8K | 0.1% | $44K | Added$53K |
| Invesco Qqq Tr | — | 706 | $407.5K | 0.1% | −$26.2K | Held |
| Dimensional Etf Trust | — | 6.08K | $379.8K | 0.1% | — | New |
| Tractor Supply Co | — | 7.92K | $359K | 0.1% | −$37.3K | Held |
| Arista Networks, Inc. | ANET | 2.92K | $357.9K | 0.1% | −$24K | Held |
| Micron Technology Inc | MU | 1.05K | $354.1K | 0.1% | $54.9K | Cut−$154.8K |
| Dbx Etf Tr | — | 5.8K | $345.3K | 0.1% | −$16.8K | Held |
| Nushares Etf Tr | — | 8.39K | $303.1K | 0.1% | −$835 | Added$862 |
| Danaher Corporation | — | 1.57K | $298.2K | 0.1% | −$56K | Added−$27.5K |
| Dimensional Etf Trust | — | 4.05K | $287.5K | 0.1% | — | New |
| Intuitive Surgical Inc | ISRG | 571 | $263.2K | 0.1% | −$55.5K | Added−$35.2K |
| Monolithic Pwr Sys Inc | — | 237 | $259.1K | 0.1% | $44.3K | Cut$1.72K |
| Progressive Corp | — | 1.27K | $252.8K | 0.1% | −$37.6K | Cut−$142.6K |
| Vanguard Bd Index Fds | — | 5.07K | $252.4K | 0.1% | −$279 | Held |
| Ishares Tr | — | 1.3K | $249.4K | 0.1% | −$8.85K | Cut−$146.7K |
| Ishares 0-3 Month | — | 2.41K | $242.2K | 0.1% | — | New |
| Gallagher Arthur J & Co | — | 1.1K | $239.3K | 0.1% | −$41.3K | Added−$13.8K |
| Vanguard Growth Etf | — | 547 | $238.9K | 0.1% | −$27.9K | Held |
| Vanguard Index Fds | — | 830 | $238.4K | 0.1% | −$2.52K | Cut−$19.9K |
| Spotify Technology S.A. | SPOT | 487 | $236.2K | 0.1% | — | New |
| Republic Svcs Inc | — | 1.07K | $234.4K | 0.1% | $7.59K | Cut−$129.1K |
| Cadence Design System Inc | — | 809 | $224.8K | 0.1% | −$28.1K | Cut−$46.8K |
| Uber Technologies, Inc | UBER | 3.12K | $224.5K | 0.1% | −$27.5K | Added−$5.44K |
| Kkr & Co Inc | — | 2.41K | $222.9K | 0.1% | −$70.3K | Added−$33.2K |
| Palo Alto Networks Inc | PANW | 1.37K | $219K | 0.1% | — | New |
| Marvell Technology, Inc. | MRVL | 2.19K | $217.3K | 0.1% | — | New |
| Dimensional Etf Trust | — | 4.33K | $209.9K | 0.1% | — | New |
| Ishares Tr | — | 1.45K | $209.8K | 0.1% | $5.15K | Held |
| Intuit Inc. | INTU | 478 | $206.7K | 0.1% | −$110K | Cut−$156.3K |
| Veralto Corp | VLTO | 2.32K | $205.4K | 0.1% | −$26.4K | Cut−$55.7K |
| Schwab Charles Corp | — | 2.17K | $204.4K | 0.1% | −$12.9K | Cut−$44.4K |
| Futureone Inc | — | 100K | $0 | 0.0% | $0 | Held |
Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.