CIK: 0001987720
Total reported value
$43.8M
Reporting period: 2026-03-31 · Number of holdings: 48
Corundum Trust Company, INC disclosed 48 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $43.8M and a quarterly turnover rate of 16.3%.
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Corundum Trust Company, INC's disclosed holdings carry a Herfindahl concentration index of 0.048 — mathematically equivalent to about 21 equally-sized positions, well below its 48 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 1.16), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
Recent activity leans toward adding more aggressively to already-large existing positions than to newly initiated ones (a 3.2 percentage-point tilt) — a pattern consistent with a momentum-following approach.
Sector classification currently covers about 25% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Trim 88579y101
+0.3% -$564.1K
Trim MSFT
+0.6% -$533.1K
Add 78462f103
+86.1% $349.8K
Trim 02079k107
-9.5% -$317.9K
Add IJR
+4.7% $300.8K
Add DVY
0.0% $193.8K
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | ✓ | 3m Co | Stock-Other | 13.03% | -1.24% | +0.32% | |
| 2 | IJR | Ishares Core S&p Small-cap E | ETF-Small Cap | 8.94% | +0.71% | +4.72% | |
| 3 | DVY | Ishares Select Dividend ETF | ETF-Other | 6.52% | +0.46% | — | |
| 4 | IJK | Ishares S&p Mid-cap 400 Grow | ETF-Other | 5.14% | +0.34% | +2.81% | |
| 5 | IVV | Ishares Core S&p 500 ETF | ETF-Large Cap & Growth | 4.93% | +0.34% | +12.33% | |
| 6 | MSFT | Microsoft CORP | Stock-Tech | 4.08% | -1.20% | +0.60% | |
| 7 | IJJ | Ishares S&p Mid-cap 400 Valu | ETF-Other | 3.98% | — | — | |
| 8 | AAPL | Apple INC | Stock-Tech | 3.77% | -0.06% | +5.22% | |
| 9 | ✓ | Skeena Resources Limited New C | Stock-Other | 3.75% | +0.31% | -13.33% | |
| 10 | DSVSF | Discovery Silver CORP | Stock-Other | 3.62% | — | -3.88% | |
| 11 | ✓ | Alphabet Inc. | Stock-Other | 3.49% | -0.71% | -9.45% | |
| 12 | EFA | Ishares Msci Eafe ETF | ETF-Other | 2.81% | +0.12% | +2.69% | |
| 13 | ✓ | Stock-Other | 2.55% | +0.16% | -6.61% | ||
| 14 | LLY | Eli Lilly & Co | Stock-Healthcare | 2.30% | -0.33% | +1.77% | |
| 15 | LUGDF | Lundin Gold INC | Stock-Other | 1.91% | -0.17% | — | |
| 16 | ✓ | State Street SPDR S&P 500 ETF Trust | ETF-Large Cap & Growth | 1.83% | +0.80% | +86.10% | |
| 17 | ✓ | J P Morgan Chase And Co | Stock-Other | 1.66% | -0.13% | +1.39% | |
| 18 | ✓ | Wesdome Gold Mines LTD | Stock-Other | 1.55% | -0.26% | -20.83% | |
| 19 | ✓ | Stock-Other | 1.47% | -0.30% | — | ||
| 20 | ✓ | Stock-Other | 1.40% | +0.09% | — | ||
| 21 | ✓ | Cisco Systems, Inc. | Stock-Other | 1.37% | — | +1.36% | |
| 22 | ✓ | Stock-Other | 1.34% | -0.15% | -7.14% | ||
| 23 | ✓ | Ishares S And P/tsx Capped Ene | Stock-Other | 1.25% | +1.25% | NEW | |
| 24 | ✓ | Vanguard Russell 3000 ETF | ETF-Other | 1.24% | -0.05% | — | |
| 25 | FNV | Franco-nevada CORP | Stock-Materials | 1.13% | +0.19% | — | |
| 26 | NEM | Newmont CORP | Stock-Materials | 0.99% | +0.08% | — | |
| 27 | AEM | Agnico Eagle Mines LTD | Stock-Materials | 0.93% | +0.16% | — | |
| 28 | ✓ | UnitedHealth Group Incorporated | Stock-Other | 0.93% | -0.20% | — | |
| 29 | C | Citigroup INC | Stock-Financials | 0.86% | — | — | |
| 30 | UGI | Ugi CORP | Stock-Utilities | 0.81% | +0.81% | NEW | |
| 31 | AMZN | Amazon.com INC | Stock-Consumer Disc | 0.81% | -0.07% | +1.85% | |
| 32 | IVW | Ishares S&p 500 Growth ETF | ETF-Large Cap & Growth | 0.80% | +0.80% | NEW | |
| 33 | UNP | Union Pacific CORP | Stock-Industrials | 0.77% | +0.04% | — | |
| 34 | BRK-B | Berkshire Hathaway Inc-cl B | Stock-Other | 0.71% | — | +2.35% | |
| 35 | KGC | Kinross Gold CORP | Stock-Materials | 0.70% | +0.06% | — | |
| 36 | EEM | Ishares Msci Emerging Market | ETF-Emerging Markets | 0.62% | — | — | |
| 37 | ✓ | Snowline Gold CORP Com | Stock-Other | 0.61% | -0.16% | — | |
| 38 | ✓ | Stock-Other | 0.60% | -0.17% | -25.00% | ||
| 39 | ✓ | First Majestic Silver CORP Com | Stock-Other | 0.59% | +0.13% | — | |
| 40 | TMO | Thermo Fisher Scientific INC | Stock-Healthcare | 0.56% | -0.10% | — | |
| 41 | ✓ | G Mining Ventures CORP New Com | Stock-Other | 0.56% | +0.08% | — | |
| 42 | IVE | Ishares S&p 500 Value ETF | ETF-Large Cap & Growth | 0.54% | +0.54% | NEW | |
| 43 | ✓ | Vizsla Silver CORP Com No Par | Stock-Other | 0.53% | -0.34% | — | |
| 44 | ✓ | Merck & Co., Inc. | Stock-Other | 0.50% | +0.50% | NEW | |
| 45 | ✓ | Nthn Star Res LTD Npv | Stock-Other | 0.45% | -0.30% | -27.03% | |
| 46 | SXGCF | Southern Cross Gold Consolid | Stock-Other | 0.42% | -0.11% | — | |
| 47 | ✓ | Rupert Resources LTD | Stock-Other | 0.35% | -0.33% | -47.24% | |
| 48 | OGNNF | Orogen Royalties INC | Stock-Other | 0.30% | +0.08% | — |
Performance for Q3 2026
—
Performance Last 4 Quarters
—
Based on 0 months of available history
Based on 36% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 48 | $43.8M | 16 | |
| 2025-12-31 | 51 | $43.9M | 23 | |
| 2025-09-30 | 127 | $46.1M | 37 | |
| 2025-06-30 | 50 | $37.9M | 0 | |
| 2025-03-31 | 50 | $34.7M | 0 | |
| 2024-12-31 | 49 | $33.3M | 0 | |
| 2024-09-30 | 52 | $36.3M | 0 | |
| 2024-06-30 | 55 | $34.4M | 0 | |
| 2023-09-30 | 37 | $33.5M | 0 | |
| 2023-06-30 | 39 | $36.6M | 0 |
Corundum Trust Company, INC's most significant position changes for 2026-03-31: New buy: Ishares S And P/tsx Capped Ene; New buy: Ugi CORP (UGI); New buy: Ishares S&p 500 Growth ETF (IVW); New buy: Ishares S&p 500 Value ETF (IVE); New buy: Merck & Co., Inc..
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | ✓ | State Street SPDR S&P 500 ETF Trust | +0.8% | +86.10% | Add |
| 2 | IJR | Ishares Core S&p Small-cap E | +0.7% | +4.72% | Add |
| 3 | DVY | Ishares Select Dividend ETF | +0.5% | — | Unchanged |
| 4 | IVV | Ishares Core S&p 500 ETF | +0.3% | +12.33% | Add |
| 5 | IJK | Ishares S&p Mid-cap 400 Grow | +0.3% | +2.81% | Add |
| 6 | ✓ | Skeena Resources Limited New C | +0.3% | -13.33% | Trim |
| 7 | FNV | Franco-nevada CORP | +0.2% | — | Unchanged |
| 8 | ✓ | +0.2% | -6.61% | Trim | |
| 9 | AEM | Agnico Eagle Mines LTD | +0.2% | — | Unchanged |
| 10 | ✓ | First Majestic Silver CORP Com | +0.1% | — | Unchanged |
| 11 | EFA | Ishares Msci Eafe ETF | +0.1% | +2.69% | Add |
| 12 | ✓ | +0.1% | — | Unchanged | |
| 13 | OGNNF | Orogen Royalties INC | +0.1% | — | Unchanged |
| 14 | NEM | Newmont CORP | +0.1% | — | Unchanged |
| 15 | ✓ | G Mining Ventures CORP New Com | +0.1% | — | Unchanged |
| 16 | KGC | Kinross Gold CORP | +0.1% | — | Unchanged |
| 17 | UNP | Union Pacific CORP | 0% | — | Unchanged |
| 18 | ✓ | Vanguard Russell 3000 ETF | -0.1% | — | Unchanged |
| 19 | AAPL | Apple INC | -0.1% | +5.22% | Add |
| 20 | AMZN | Amazon.com INC | -0.1% | +1.85% | Add |
| 21 | TMO | Thermo Fisher Scientific INC | -0.1% | — | Unchanged |
| 22 | SXGCF | Southern Cross Gold Consolid | -0.1% | — | Unchanged |
| 23 | ✓ | J P Morgan Chase And Co | -0.1% | +1.39% | Add |
| 24 | ✓ | -0.2% | -7.14% | Trim | |
| 25 | ✓ | Snowline Gold CORP Com | -0.2% | — | Unchanged |
| 26 | LUGDF | Lundin Gold INC | -0.2% | — | Unchanged |
| 27 | ✓ | -0.2% | -25.00% | Trim | |
| 28 | ✓ | UnitedHealth Group Incorporated | -0.2% | — | Unchanged |
| 29 | ✓ | Wesdome Gold Mines LTD | -0.3% | -20.83% | Trim |
| 30 | ✓ | -0.3% | — | Unchanged | |
| 31 | ✓ | Nthn Star Res LTD Npv | -0.3% | -27.03% | Trim |
| 32 | LLY | Eli Lilly & Co | -0.3% | +1.77% | Add |
| 33 | ✓ | Rupert Resources LTD | -0.3% | -47.24% | Trim |
| 34 | ✓ | Vizsla Silver CORP Com No Par | -0.3% | — | Unchanged |
| 35 | ✓ | Alphabet Inc. | -0.7% | -9.45% | Trim |
| 36 | MSFT | Microsoft CORP | -1.2% | +0.60% | Add |
| 37 | ✓ | 3m Co | -1.2% | +0.32% | Add |
| 38 | ✓ | Ishares S And P/tsx Capped Ene | — | NEW | New buy |
| 39 | UGI | Ugi CORP | — | NEW | New buy |
| 40 | IVW | Ishares S&p 500 Growth ETF | — | NEW | New buy |
| 41 | IVE | Ishares S&p 500 Value ETF | — | NEW | New buy |
| 42 | ✓ | Merck & Co., Inc. | — | NEW | New buy |
| 43 | ✓ | Or Royalties INC Com | — | EXIT | Sold out |
| 44 | ✓ | Aurion Resources LTD | — | EXIT | Sold out |
| 45 | ✓ | Ramelius Resources LTD US List | — | EXIT | Sold out |
| 46 | ✓ | Onyx Gold CORP Com | — | EXIT | Sold out |
| 47 | ✓ | Deep Yellow Limited Ordinary S | — | EXIT | Sold out |
| 48 | ✓ | Banyan Gold CORP Cl A | — | EXIT | Sold out |
| 49 | ✓ | — | EXIT | Sold out | |
| 50 | WLFFF | Wolfden Resources CORP | — | EXIT | Sold out |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-04-15 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-01-20 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-10-24 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-07-28 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-04-24 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-01-17 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-10-22 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-07-24 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-10-23 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-03 | 13F-HR | View on EDGAR |
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