Corundum Group, Inc.
Long book
$299.2M
Q1 2026
Positions
108
Top-10 weight
54%
concentration
Last quarter
+13.0%
SPY +14.8%
Turnover
19%
of book per quarter
Strategy in plain words
auto-generated from filingsCorundum Group, Inc. is a wealth-management firm allocating client money, running a $299.2M US long book across 108 positions.
The portfolio is concentrated: the top 10 names carry 54% of the portfolio. Turnover is modest: positions are typically held for years. Current anchor positions: ISHARES RUSSELL 1000 GROWTH, ISHARES RUSSELL 1000 VALUE E, ISHARES MSCI EAFE ETF, 3M CO, LOCKHEED MARTIN CORP.
Over the last 9 quarters its long book ran on average 0pp per quarter ahead of the S&P 500, beating the index in 4 of 9 quarters. Its holdings are mechanical (indexing / client flows), so position changes carry no stock-picking signal.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/options Fund long book S&P 500
Q1 2024
+2.7%
Q2 2024
+7.6%
Q3 2024
+0.7%
Q4 2024
-1.9%
Q1 2025
+8.4%
Q2 2025
+7.8%
Q3 2025
+2.8%
Q4 2025
-0.6%
Q1 2026
+13.0%
Sector allocation
Technology 25%
Healthcare 24%
Industrials 15%
Financials 8%
Materials 7%
Consumer discretionary 6%
Energy 4%
Services media 4%
Long book by quarter
What does Corundum Group, own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| MMM 3M CO | Healthcare | 99.2K | $14.4M | 4.8% | +1.2% |
| LMT LOCKHEED MARTIN CORP | Industrials | 19.0K | $11.5M | 3.8% | -26.1% |
| LIN LINDE PLC | Materials | 15.9K | $7.9M | 2.6% | -33.1% |
| AAPL APPLE INC | Technology | 23.5K | $6.0M | 2.0% | +0.2% |
| MSFT MICROSOFT CORP | Technology | 12.5K | $4.6M | 1.5% | -18.3% |
| XOM EXXON MOBIL CORP | Energy | 18.6K | $3.2M | 1.1% | +4.8% |
| NVDA NVIDIA CORP | Technology | 17.0K | $3.0M | 1.0% | +2.9% |
| JPM JPMORGAN CHASE & CO | Financials | 9.7K | $2.9M | 1.0% | +0.8% |
| GOOGL ALPHABET INC-CL A | Technology | 9.7K | $2.8M | 0.9% | -8.3% |
| GOOG ALPHABET INC-CL C | Technology | 9.0K | $2.6M | 0.9% | +2.6% |
| CAT CATERPILLAR INC | Industrials | 3.4K | $2.4M | 0.8% | +5.7% |
| AVGO BROADCOM INC | Technology | 6.8K | $2.1M | 0.7% | +5.1% |
| JNJ JOHNSON & JOHNSON | Healthcare | 7.8K | $1.9M | 0.6% | +6.0% |
| V VISA INC-CLASS A SHARES | Services media | 5.9K | $1.8M | 0.6% | +33.7% |
| AMZN AMAZON.COM INC | Consumer discretionary | 8.4K | $1.8M | 0.6% | -6.9% |
| ABBV ABBVIE INC | Healthcare | 8.1K | $1.8M | 0.6% | -3.1% |
| GS GOLDMAN SACHS GROUP INC | Financials | 1.9K | $1.6M | 0.5% | +10.5% |
| CSCO CISCO SYSTEMS INC | Technology | 20.2K | $1.6M | 0.5% | +9.7% |
| BMY BRISTOL-MYERS SQUIBB CO | Healthcare | 25.7K | $1.6M | 0.5% | +8.9% |
| LLY ELI LILLY & CO | Healthcare | 1.7K | $1.5M | 0.5% | +10.5% |
| ECL ECOLAB INC | Other | 5.7K | $1.5M | 0.5% | +11.2% |
| COST COSTCO WHOLESALE CORP | Consumer discretionary | 1.5K | $1.5M | 0.5% | -7.3% |
| USB US BANCORP | Financials | 27.8K | $1.4M | 0.5% | +9.7% |
| WMT WALMART INC | Consumer discretionary | 11.6K | $1.4M | 0.5% | +9.5% |
| DUK DUKE ENERGY CORP | Utilities | 10.8K | $1.4M | 0.5% | +172.9% |
| WM WASTE MANAGEMENT INC | Utilities | 6.0K | $1.4M | 0.5% | +11.3% |
| HD HOME DEPOT INC | Consumer discretionary | 4.1K | $1.3M | 0.4% | +13.6% |
| INTC INTEL CORP | Technology | 29.8K | $1.3M | 0.4% | +9.9% |
| AMGN AMGEN INC | Healthcare | 3.6K | $1.3M | 0.4% | +10.9% |
| MRK MERCK & CO. INC. | Healthcare | 10.5K | $1.3M | 0.4% | +9.8% |
| MA MASTERCARD INC - A | Services media | 2.5K | $1.2M | 0.4% | +51.2% |
| BRK/B BERKSHIRE HATHAWAY INC-CL B | Financials | 2.6K | $1.2M | 0.4% | +1.5% |
| BAC BANK OF AMERICA CORP | Financials | 24.6K | $1.2M | 0.4% | +15.3% |
| ORCL ORACLE CORP | Technology | 8.1K | $1.2M | 0.4% | +19.4% |
| CVX CHEVRON CORP | Energy | 5.7K | $1.2M | 0.4% | +20.4% |
| MCD MCDONALD'S CORP | Consumer discretionary | 3.3K | $1.0M | 0.3% | -15.6% |
| ABT ABBOTT LABORATORIES | Healthcare | 9.9K | $1.0M | 0.3% | +3.2% |
| FDX FEDEX CORP | Industrials | 2.7K | $957K | 0.3% | +24.4% |
| PFE PFIZER INC | Healthcare | 32.8K | $921K | 0.3% | +1.1% |
| KO COCA-COLA CO/THE | Consumer staples | 12.0K | $915K | 0.3% | +13.7% |
| MDT MEDTRONIC PLC | Healthcare | 10.3K | $894K | 0.3% | +26.2% |
| ADP AUTOMATIC DATA PROCESSING | Technology | 4.3K | $872K | 0.3% | +56.7% |
| VZ VERIZON COMMUNICATIONS INC | Communications | 16.8K | $844K | 0.3% | New |
| HON HONEYWELL INTERNATIONAL INC | Industrials | 3.7K | $842K | 0.3% | +6.4% |
| PG PROCTER & GAMBLE CO/THE | Other | 5.8K | $833K | 0.3% | +33.9% |
| XEL XCEL ENERGY INC | Utilities | 9.6K | $761K | 0.3% | +34.6% |
| DIS WALT DISNEY CO/THE | Services media | 7.7K | $746K | 0.2% | +24.5% |
| UPS UNITED PARCEL SERVICE-CL B | Industrials | 7.3K | $723K | 0.2% | New |
| SOLV SOLVENTUM CORP | Healthcare | 8.2K | $536K | 0.2% | -0.2% |
| GE GENERAL ELECTRIC | Industrials | 1.5K | $437K | 0.1% | -4.9% |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | Apr 20, 2026 | 108 | $299.2M | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Jan 12, 2026 | 113 | $298.0M | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Oct 24, 2025 | 103 | $243.4M | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Jul 21, 2025 | 103 | $226.2M | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | Apr 23, 2025 | 98 | $208.5M | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Jan 16, 2025 | 100 | $267.8M | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Oct 21, 2024 | 100 | $219.2M | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Jul 17, 2024 | 101 | $256.0M | canonical | SEC ↗ |
| Q1 2024 | 13F-HR | Apr 15, 2024 | 98 | $207.3M | canonical | SEC ↗ |