Corundum Trust Company, INC
Long book
$43.8M
Q1 2026
Positions
48
Top-10 weight
58%
concentration
Last quarter
+11.3%
SPY +14.8%
Turnover
23%
of book per quarter
Strategy in plain words
auto-generated from filingsCorundum Trust Company, INC is an institutional manager, running a $43.8M US long book across 48 positions.
The portfolio is concentrated: the top 10 names carry 58% of the portfolio. Turnover is modest: positions are typically held for years. Current anchor positions: 3M CO, ISHARES CORE S&P SMALL-CAP E, ISHARES SELECT DIVIDEND ETF, ISHARES S&P MID-CAP 400 GROW, ISHARES CORE S&P 500 ETF.
Over the last 8 quarters its long book ran on average 0.9pp per quarter ahead of the S&P 500, beating the index in 5 of 8 quarters. Signal value of individual moves is limited — treat changes as weak evidence.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/options Fund long book S&P 500
Q2 2024
+10.8%
Q3 2024
-1.1%
Q4 2024
+0.6%
Q1 2025
+7.3%
Q2 2025
+10.1%
Q3 2025
+6.4%
Q4 2025
-2.7%
Q1 2026
+11.3%
Sector allocation
Healthcare 30%
Technology 22%
Other 19%
Materials 17%
Financials 7%
Utilities 1%
Consumer discretionary 1%
Industrials 1%
Long book by quarter
What does Corundum Trust own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| MMM 3M CO | Healthcare | 39.3K | $5.7M | 13.0% | +0.3% |
| MSFT MICROSOFT CORP | Technology | 4.8K | $1.8M | 4.1% | +0.6% |
| AAPL APPLE INC | Technology | 6.5K | $1.7M | 3.8% | +5.2% |
| SKE SKEENA RESOURCES LTD | Materials | 55.3K | $1.6M | 3.7% | -13.3% |
| GOOG ALPHABET INC-CL C | Technology | 5.3K | $1.5M | 3.5% | -9.5% |
| GGP GREATLAND RESOURCES LTD | — | 141.3K | $1.1M | 2.5% | -6.6% |
| LLY ELI LILLY & CO | Healthcare | 1.1K | $1.0M | 2.3% | +1.8% |
| LUGDF LUNDIN GOLD INC | — | 11.0K | $838K | 1.9% | Held |
| JPM JPMORGAN CHASE & CO | Financials | 2.5K | $728K | 1.7% | +1.4% |
| WDOFF WESDOME GOLD MINES LTD | — | 38.0K | $677K | 1.5% | -20.8% |
| SOLV SOLVENTUM CORP | Healthcare | 9.8K | $642K | 1.5% | Held |
| AYA AYA GOLD & SILVER INC | Materials | 40.0K | $612K | 1.4% | Held |
| CSCO CISCO SYSTEMS INC | Technology | 7.8K | $602K | 1.4% | +1.4% |
| NGXXF NGEX MINERALS LTD | — | 32.5K | $587K | 1.3% | -7.1% |
| FNV FRANCO-NEVADA CORP | Materials | 2.0K | $494K | 1.1% | Held |
| NEM NEWMONT CORP | Materials | 4.0K | $433K | 1.0% | Held |
| AEM AGNICO EAGLE MINES LTD | Materials | 2.0K | $406K | 0.9% | Held |
| UNH UNITEDHEALTH GROUP INC | Financials | 1.5K | $406K | 0.9% | Held |
| C CITIGROUP INC | Financials | 3.3K | $376K | 0.9% | Held |
| UGI UGI CORP | Utilities | 9.8K | $356K | 0.8% | New |
| AMZN AMAZON.COM INC | Consumer discretionary | 1.7K | $355K | 0.8% | +1.9% |
| UNP UNION PACIFIC CORP | Industrials | 1.4K | $335K | 0.8% | Held |
| BRK/B BERKSHIRE HATHAWAY INC-CL B | Financials | 653 | $313K | 0.7% | +2.4% |
| KGC KINROSS GOLD CORP | Materials | 10.0K | $305K | 0.7% | Held |
| SNWGF SNOWLINE GOLD CORP | — | 27.0K | $269K | 0.6% | Held |
| EVN EVOLUTION MINING LTD | — | 30.0K | $264K | 0.6% | -25.0% |
| AG FIRST MAJESTIC SILVER CORP | Materials | 12.0K | $258K | 0.6% | Held |
| TMO THERMO FISHER SCIENTIFIC INC | Other | 500 | $246K | 0.6% | Held |
| GMINF G MINING VENTURE CORP | — | 7.0K | $245K | 0.6% | Held |
| VZLA VIZSLA SILVER CORP | Materials | 70.3K | $232K | 0.5% | Held |
| MRK MERCK & CO. INC. | Healthcare | 1.8K | $219K | 0.5% | New |
| NST NORTHERN STAR RESOURCES LTD | — | 13.5K | $196K | 0.4% | -27.0% |
| SXGCF SOUTHERN CROSS GOLD CONSOLID | — | 30.0K | $183K | 0.4% | Held |
| OGNNF OROGEN ROYALTIES INC | — | 50.0K | $130K | 0.3% | Held |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | Apr 15, 2026 | 48 | $43.8M | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Jan 20, 2026 | 51 | $43.9M | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Oct 24, 2025 | 127 | $46.1M | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Jul 28, 2025 | 50 | $37.9M | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | Apr 24, 2025 | 50 | $34.7M | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Jan 17, 2025 | 49 | $33.3M | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Oct 22, 2024 | 52 | $36.3M | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Jul 24, 2024 | 55 | $34.4M | canonical | SEC ↗ |
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