Corundum Group, Inc.
CIK
1486083
Location
COLORADO SPRINGS, CO
Portfolio Value
Micro
$63,344,990
Diversification
Diversified
Filing Date
Global Rank
#6,843
/ 8,633
▼ 1382
Top Industry
Aerospace & Defense
17.9%
3Y Alpha vs SPY
+14.4%
Period ended 51 days ago
Filed Aug 7, 2026 · 13d
26 quarters · since Mar 2020
Clone Performance
Aug 2023–Aug 2026 · vs SPYHypothetical growth of buying every stock this filer reported holding, rebalancing on each filing and indexed to the same start. Option positions cannot be bought this way and are left out.
Cloned portfolio
+148.0%
SPY
+76.2%
Annualised alpha
+14.6%
Max drawdown
−16.4%
Estimate. 13F holdings are quarter-lagged, so the clone rebalances about 45 days after each period end — when the filing becomes public — and it excludes option and short positions. Returns use comparable raw closes and exclude dividends; a captured split can shorten the simulated window. It tracks 100% of reported value on average across 13 quarters. Past performance does not predict future results.
Portfolio Concentration
45 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026Top Position
15.3%
+4.0 pts
Top 5
46.0%
+8.3 pts
Top 10
60.7%
+7.2 pts
HHI
592
Diversified+177
Portfolio Trend
26 quarters · across all stocks
Sector Breakdown
As of Jun 30, 2026| Sector | % Portfolio | Value |
|---|---|---|
| Technology | 33.4% | $21,165,300 |
| Industrials | 26.5% | $16,757,898 |
| Healthcare | 14.3% | $9,083,556 |
| Financial Services | 8.1% | $5,147,927 |
| Consumer Cyclical | 7.0% | $4,417,871 |
| Consumer Defensive | 5.1% | $3,228,181 |
| Basic Materials | 2.5% | $1,573,032 |
| Energy | 1.5% | $973,508 |
| Communication Services | 1.2% | $779,336 |
| Unclassified | 0.3% | $218,381 |
Last Quarter's Activity
Export CSVAdded To
Positions the filer increased
24 positions
| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| PFE | Pfizer Inc | +1,470 | 34,264 | $825,077 | |
| ANET | Arista Networks, Inc. | +1,441 | 4,356 | $739,997 | |
| AAPL | Apple Inc. | +941 | 24,451 | $7,075,141 | |
| KO | Coca Cola Co | +449 | 12,485 | $1,014,655 | |
| DIS | Walt Disney Co | +355 | 8,097 | $779,336 | |
| WMT | Walmart Inc. | +281 | 11,835 | $1,340,432 | |
| BAC | Bank Of America Corp /De/ | +259 | 24,897 | $1,418,631 | |
| UPS | United Parcel Service Inc | +246 | 7,593 | $816,247 | |
| CVX | Chevron Corp | +200 | 5,873 | $973,508 | |
| USB | US Bancorp De | +197 | 28,013 | $1,691,985 | |
| SCHW | Schwab Charles Corp | +185 | 2,360 | $217,757 | |
| PG | PROCTER & GAMBLE Co | +185 | 5,954 | $873,094 | |
| AMZN | Amazon Com Inc | +151 | 8,601 | $2,049,962 | |
| BMY | Bristol Myers Squibb Co | +87 | 25,813 | $1,487,345 | |
| INTC | Intel Corp | +81 | 29,853 | $4,168,374 | |
| MCD | Mcdonalds Corp | +72 | 3,408 | $921,216 | |
| DHR | Danaher Corp /De/ | +67 | 1,640 | $312,387 | |
| ADP | Automatic Data Processing Inc | +57 | 4,347 | $973,510 | |
| MSFT | Microsoft Corp | +51 | 12,510 | $4,666,480 | |
| HD | Home Depot, Inc. | +49 | 4,102 | $1,446,693 | |
| AMGN | Amgen Inc | +41 | 3,678 | $1,331,877 | |
| BRK-B | Berkshire Hathaway Inc | +37 | 2,589 | $1,295,509 | |
| LLY | ELI LILLY & Co | +10 | 1,681 | $2,016,241 | |
| GE | General Electric Co | +9 | 1,548 | $578,534 | |
| No positions match the current search. | |||||
Trimmed
Positions the filer reduced
15 positions
| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| HON | Honeywell International Inc | −1,747 | 1,976 | $442,426 | |
| MRVL | Marvell Technology, Inc. | −1,244 | 950 | $282,995 | |
| PANW | Palo Alto Networks Inc | −351 | 1,015 | $346,135 | |
| ABT | Abbott Laboratories | −122 | 9,802 | $889,433 | |
| TSM | Taiwan Semiconductor Manufacturing Co Ltd | −116 | 1,174 | $560,667 | |
| MPWR | Monolithic Power Systems, Inc. | −77 | 160 | $221,177 | |
| TXN | Texas Instruments Inc | −50 | 2,128 | $634,292 | |
| AJG | Arthur J. Gallagher & Co. | −26 | 1,079 | $247,706 | |
| JNJ | Johnson & Johnson | −23 | 7,755 | $1,969,537 | |
| CAT | Caterpillar Inc | −22 | 3,337 | $3,553,571 | |
| CDNS | Cadence Design Systems Inc | −14 | 795 | $298,379 | |
| MU | Micron Technology Inc | −10 | 1,038 | $1,198,153 | |
| PGR | Progressive Corp/Oh/ | −10 | 1,265 | $276,339 | |
| ECL | Ecolab Inc. | −9 | 5,646 | $1,573,032 | |
| RSG | Republic Services, Inc. | −9 | 1,061 | $226,077 | |
| No positions match the current search. | |||||
New Positions
Positions the filer opened this quarter
5 positions
Sold Out
Positions the filer fully exited
25 positions
| Ticker | Company | Shares | Value | Open |
|---|---|---|---|---|
| MMM | 3M Co | 99,152 | $14,399,844 | |
| SPY | Spdr S&P 500 ETF Trust | 12,387 | $8,055,761 | |
| LIN | Linde PLC | 15,863 | $7,864,240 | |
| GOOGL | Alphabet Inc. | 18,638 | $5,353,261 | |
| GLD | Spdr Gold Trust | 9,391 | $4,040,853 | |
| XOM | ExxonMobil Holdings Corp | 18,605 | $3,156,524 | |
| NVDA | Nvidia Corp | 16,961 | $2,957,998 | |
| JPM | Jpmorgan Chase & Co | 9,748 | $2,867,471 | |
| AVGO | Broadcom Inc. | 6,820 | $2,110,858 | |
| V | Visa Inc. | 5,906 | $1,785,029 | |
| ABBV | AbbVie Inc. | 8,055 | $1,751,881 | |
| GS | Goldman Sachs Group Inc | 1,887 | $1,596,383 | |
| CSCO | Cisco Systems, Inc. | 20,198 | $1,567,162 | |
| COST | Costco Wholesale Corp /New | 1,479 | $1,473,719 | |
| DUK | Duke Energy CORP | 10,767 | $1,409,830 | |
| WM | Waste Management Inc | 5,950 | $1,367,250 | |
| MRK | Merck & Co., Inc. | 10,498 | $1,262,804 | |
| MA | Mastercard Inc | 2,480 | $1,239,156 | |
| ORCL | Oracle Corp | 8,119 | $1,194,386 | |
| FDX | Fedex Corp | 2,688 | $957,411 | |
| MDT | Medtronic plc | 10,313 | $893,621 | |
| VZ | Verizon Communications Inc | 16,822 | $844,464 | |
| XEL | Xcel Energy Inc | 9,585 | $761,432 | |
| SOLV | Solventum Corp | 8,214 | $536,374 | |
| QQQ | Invesco Qqq Trust, Series 1 | 706 | $407,489 | |
| No positions match the current search. | ||||
45 tracked positions ·
$63,344,990 total
· filing declares
112 positions · $337,147,794
· as of Jun 30, 2026
All sectors
Basic Materials
Communication Services
Consumer Cyclical
Consumer Defensive
Energy
Financial Services
Healthcare
Industrials
Technology
| Ticker | Company | Type | Shares | Value (USD) | % of Portfolio | History |
|---|---|---|---|---|---|---|
| LMT |
Lockheed Martin Corp
Industrials
|
Held | 19,045 | $9,702,665 | 15.32% | |
| AAPL |
Apple Inc.
Technology
|
Added | 24,451 | $7,075,141 | 11.17% | |
| MSFT |
Microsoft Corp
Technology
|
Added | 12,510 | $4,666,480 | 7.37% | |
| INTC |
Intel Corp
Technology
|
Added | 29,853 | $4,168,374 | 6.58% | |
| CAT |
Caterpillar Inc
Industrials
|
Reduced | 3,337 | $3,553,571 | 5.61% | |
| AMZN |
Amazon Com Inc
Consumer Cyclical
|
Added | 8,601 | $2,049,962 | 3.24% | |
| LLY |
ELI LILLY & Co
Healthcare
|
Added | 1,681 | $2,016,241 | 3.18% | |
| JNJ |
Johnson & Johnson
Healthcare
|
Reduced | 7,755 | $1,969,537 | 3.11% | |
| USB |
US Bancorp De
Financial Services
|
Added | 28,013 | $1,691,985 | 2.67% | |
| ECL |
Ecolab Inc.
Basic Materials
|
Reduced | 5,646 | $1,573,032 | 2.48% | |
| BMY |
Bristol Myers Squibb Co
Healthcare
|
Added | 25,813 | $1,487,345 | 2.35% | |
| HD |
Home Depot, Inc.
Consumer Cyclical
|
Added | 4,102 | $1,446,693 | 2.28% | |
| BAC |
Bank Of America Corp /De/
Financial Services
|
Added | 24,897 | $1,418,631 | 2.24% | |
| WMT |
Walmart Inc.
Consumer Defensive
|
Added | 11,835 | $1,340,432 | 2.12% | |
| AMGN |
Amgen Inc
Healthcare
|
Added | 3,678 | $1,331,877 | 2.10% | |
| BRK-B |
Berkshire Hathaway Inc
Financial Services
|
Added | 2,589 | $1,295,509 | 2.05% | |
| MU |
Micron Technology Inc
Technology
|
Reduced | 1,038 | $1,198,153 | 1.89% | |
| KO |
Coca Cola Co
Consumer Defensive
|
Added | 12,485 | $1,014,655 | 1.60% | |
| BA |
Boeing Co
Industrials
|
NEW | 4,610 | $997,926 | 1.58% | |
| ADP |
Automatic Data Processing Inc
Technology
|
Added | 4,347 | $973,510 | 1.54% | |
| CVX |
Chevron Corp
Energy
|
Added | 5,873 | $973,508 | 1.54% | |
| MCD |
Mcdonalds Corp
Consumer Cyclical
|
Added | 3,408 | $921,216 | 1.45% | |
| ABT |
Abbott Laboratories
Healthcare
|
Reduced | 9,802 | $889,433 | 1.40% | |
| PG |
PROCTER & GAMBLE Co
Consumer Defensive
|
Added | 5,954 | $873,094 | 1.38% | |
| PFE |
Pfizer Inc
Healthcare
|
Added | 34,264 | $825,077 | 1.30% | |
| UPS |
United Parcel Service Inc
Industrials
|
Added | 7,593 | $816,247 | 1.29% | |
| DIS |
Walt Disney Co
Communication Services
|
Added | 8,097 | $779,336 | 1.23% | |
| ANET |
Arista Networks, Inc.
Technology
|
Added | 4,356 | $739,997 | 1.17% | |
| TXN |
Texas Instruments Inc
Technology
|
Reduced | 2,128 | $634,292 | 1.00% | |
| GE |
General Electric Co
Industrials
|
Added | 1,548 | $578,534 | 0.91% | |
| TSM |
Taiwan Semiconductor Manufacturing Co Ltd
Technology
|
Reduced | 1,174 | $560,667 | 0.89% | |
| HON |
Honeywell International Inc
Industrials
|
Reduced | 1,976 | $442,426 | 0.70% | |
| PANW |
Palo Alto Networks Inc
Technology
|
Reduced | 1,015 | $346,135 | 0.55% | |
| DHR |
Danaher Corp /De/
Healthcare
|
Added | 1,640 | $312,387 | 0.49% | |
| CDNS |
Cadence Design Systems Inc
Technology
|
Reduced | 795 | $298,379 | 0.47% | |
| MRVL |
Marvell Technology, Inc.
Technology
|
Reduced | 950 | $282,995 | 0.45% | |
| PGR |
Progressive Corp/Oh/
Financial Services
|
Reduced | 1,265 | $276,339 | 0.44% | |
| WST |
West Pharmaceutical Services Inc
Healthcare
|
NEW | 701 | $251,659 | 0.40% | |
| AJG |
Arthur J. Gallagher & Co.
Financial Services
|
Reduced | 1,079 | $247,706 | 0.39% | |
| CTAS |
Cintas Corp
Industrials
|
NEW | 1,400 | $238,112 | 0.38% | |
| RSG |
Republic Services, Inc.
Industrials
|
Reduced | 1,061 | $226,077 | 0.36% | |
| MPWR |
Monolithic Power Systems, Inc.
Technology
|
Reduced | 160 | $221,177 | 0.35% | |
| VEA |
Vanguard FTSE Developed Markets ETF
|
NEW | 3,065 | $218,381 | 0.34% | |
| SCHW |
Schwab Charles Corp
Financial Services
|
Added | 2,360 | $217,757 | 0.34% | |
| FDXF |
FedEx Freight Holding Company, Inc.
Industrials
|
NEW | 1,340 | $202,340 | 0.32% |
Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.