Corundum Trust Company, INC
In its 13F for Q1 2026 (holdings as of March 31, 2026, filed April 15, 2026), Corundum Trust Company, INC reported 48 stock positions worth $43.8 million. Its top holding was 3M (MMM) at 13.0% of the portfolio, followed by iShares Core S&P Small-Cap E (IJR, 8.9%) and iShares Select Dividend ETF (DVY, 6.5%). Compared with Q4 2025, it opened 5 new positions, sold out of 8, added to 13 and reduced 9. The biggest buy was a new position in iShares S&P/TSX Capped Energ (IUNSF) and the biggest sale Alphabet Class C (GOOG, shares −9%).
- Most Recent 13F
- Q2 2026
- Location
- SIOUX FALLS, SD
- CIK
- 0001987720
- Portfolio Value
- $43.8M (Q1 2026)
- SEC Filing
- 0001987720-26-000002 ↗ filed Apr 15, 2026
Holdings Value
Holdings 48 stocks · $43.8M
| MMM 3M Co. | 13.03% | 39,280 | $5.7M | Add +0.3% |
| IJR iShares Core S&P Small-Cap E | 8.94% | 31,502 | $3.9M | Add +4.7% |
| DVY iShares Select Dividend ETF | 6.52% | 18,872 | $2.9M | No change |
| IJK iShares S&P Mid-Cap 400 Grow | 5.14% | 22,354 | $2.2M | Add +2.8% |
| IVV iShares Core S&P 500 ETF | 4.93% | 3,306 | $2.2M | Add +12.3% |
| MSFT Microsoft Corp. | 4.08% | 4,823 | $1.8M | Add +0.6% |
| IJJ iShares S&P Mid-Cap 400 Valu | 3.98% | 13,166 | $1.7M | No change |
| AAPL Apple Inc. | 3.77% | 6,512 | $1.7M | Add +5.2% |
| SKE Skeena Resources Ltd. | 3.75% | 55,250 | $1.6M | Reduce -13.3% |
| DiscoverySilverCorp | 3.62% | 247,500 | $1.6M | Reduce -3.9% |
| GOOG Alphabet Inc. Class C | 3.49% | 5,325 | $1.5M | Reduce -9.4% |
| EFA iShares MSCI Eafe ETF | 2.81% | 12,651 | $1.2M | Add +2.7% |
| GGPSF Greatland Resources Ltd. | 2.55% | 141,250 | $1.1M | Reduce -6.6% |
| LLY Eli Lilly & Co. | 2.30% | 1,095 | $1.0M | Add +1.8% |
| LUGDF Lundin Gold Inc. | 1.91% | 11,000 | $838K | No change |
| SPY SS SPDR S&P 500 ETF Trust-US | 1.83% | 1,232 | $801K | Add +86.1% |
| JPM JPMorgan Chase & Co. | 1.66% | 2,476 | $728K | Add +1.4% |
| WDOFF Wesdome Gold Mines Ltd. | 1.55% | 38,000 | $677K | Reduce -20.8% |
| SOLV Solventum Corp. | 1.47% | 9,831 | $642K | No change |
| AYA Aya Gold & Silver Inc. | 1.40% | 40,000 | $612K | No change |
| CSCO Cisco Systems Inc. | 1.37% | 7,756 | $602K | Add +1.4% |
| NGXXF Ngex Minerals Ltd. | 1.34% | 32,500 | $587K | Reduce -7.1% |
| IUNSF iShares S&P/TSX Capped Energ | 1.25% | 28,000 | $547K | New |
| VTHR Vanguard Russell 3000 | 1.24% | 1,892 | $544K | No change |
| FNV Franco-Nevada Corp. | 1.13% | 2,000 | $494K | No change |
| NEM Newmont Corp. | 0.99% | 4,000 | $433K | No change |
| AEM Agnico Eagle Mines Ltd. | 0.93% | 2,000 | $406K | No change |
| UNH Unitedhealth Group Inc. | 0.93% | 1,499 | $406K | No change |
| C Citigroup Inc. | 0.86% | 3,315 | $376K | No change |
| UGI Ugi Corp. | 0.81% | 9,773 | $356K | New |
| AMZN Amazon.com Inc. | 0.81% | 1,703 | $355K | Add +1.9% |
| IVW iShares S&P 500 Growth ETF | 0.80% | 3,110 | $352K | New |
| UNP Union Pacific Corp. | 0.77% | 1,382 | $335K | No change |
| BRK.B Berkshire Hathaway Inc. Class B | 0.71% | 653 | $313K | Add +2.4% |
| KGC Kinross Gold Corp. | 0.70% | 10,000 | $305K | No change |
| EEM iShares MSCI Emerging Market | 0.62% | 4,810 | $273K | No change |
| SNWGF Snowline Gold Corp. | 0.61% | 27,000 | $269K | No change |
| CAHPF Evolution Mining Ltd. | 0.60% | 30,000 | $264K | Reduce -25.0% |
| AG First Majestic Silver Corp. | 0.59% | 12,000 | $258K | No change |
| TMO Thermo Fisher Scientific Inc. | 0.56% | 500 | $246K | No change |
| GMINF G Mining Venture Corp. | 0.56% | 7,000 | $245K | No change |
| IVE iShares S&P 500 Value ETF | 0.54% | 1,130 | $239K | New |
| VZLA Vizsla Silver Corp. | 0.53% | 70,250 | $232K | No change |
| MRK Merck & Co. Inc. | 0.50% | 1,824 | $219K | New |
| NESRF Northern Star Resources Ltd. filed as NTHN STAR RES LTD NPV | 0.45% | 13,500 | $196K | Reduce -27.0% |
| SXGCF Southern Cross Gold Consolid | 0.42% | 30,000 | $183K | No change |
| RUPRF Rupert Resources Ltd. | 0.35% | 33,500 | $154K | Reduce -47.2% |
| OGNNF Orogen Royalties Inc. | 0.30% | 50,000 | $130K | No change |
Portfolio Sells Q4 2025 → Q1 2026
| GOOG Alphabet Inc. Class C | Reduce -9.4% | 3.49% | −0.71 |
| OR Or Royalties Inc. | Sold out | 0.00% | −0.48 |
| AIRRF Aurion Resources Ltd. | Sold out | 0.00% | −0.36 |
| RUPRF Rupert Resources Ltd. | Reduce -47.2% | 0.35% | −0.33 |
| NESRF Northern Star Resources Ltd. | Reduce -27.0% | 0.45% | −0.30 |
| WDOFF Wesdome Gold Mines Ltd. | Reduce -20.8% | 1.55% | −0.26 |
| RMLRF Ramelius Resources Ltd. | Sold out | 0.00% | −0.22 |
| ONXGF Onyx Gold Corp. | Sold out | 0.00% | −0.19 |
| DYLLF Deep Yellow Ltd. | Sold out | 0.00% | −0.17 |
| CAHPF Evolution Mining Ltd. | Reduce -25.0% | 0.60% | −0.17 |
| BYAGF Banyan Gold Corp. | Sold out | 0.00% | −0.15 |
| NGXXF Ngex Minerals Ltd. | Reduce -7.1% | 1.34% | −0.15 |
| GLGDF Gogold Resources Inc. | Sold out | 0.00% | −0.15 |
| WLFFF Wolfden Resources Corp. | Sold out | 0.00% | −0.04 |
| DiscoverySilverCorp | Reduce -3.9% | 3.62% | +0.04 |
| GGPSF Greatland Resources Ltd. | Reduce -6.6% | 2.55% | +0.16 |
| SKE Skeena Resources Ltd. | Reduce -13.3% | 3.75% | +0.31 |
Portfolio Buys Q4 2025 → Q1 2026
| IUNSF iShares S&P/TSX Capped Energ | New | 1.25% | +1.25 |
| UGI Ugi Corp. | New | 0.81% | +0.81 |
| IVW iShares S&P 500 Growth ETF | New | 0.80% | +0.80 |
| SPY SS SPDR S&P 500 ETF Trust-US | Add +86.1% | 1.83% | +0.80 |
| IJR iShares Core S&P Small-Cap E | Add +4.7% | 8.94% | +0.71 |
| IVE iShares S&P 500 Value ETF | New | 0.54% | +0.54 |
| MRK Merck & Co. Inc. | New | 0.50% | +0.50 |
| IVV iShares Core S&P 500 ETF | Add +12.3% | 4.93% | +0.34 |
| IJK iShares S&P Mid-Cap 400 Grow | Add +2.8% | 5.14% | +0.34 |
| EFA iShares MSCI Eafe ETF | Add +2.7% | 2.81% | +0.11 |
| CSCO Cisco Systems Inc. | Add +1.4% | 1.37% | +0.03 |
| BRK.B Berkshire Hathaway Inc. Class B | Add +2.4% | 0.71% | −0.02 |
| AAPL Apple Inc. | Add +5.2% | 3.77% | −0.06 |
| AMZN Amazon.com Inc. | Add +1.9% | 0.81% | −0.07 |
| JPM JPMorgan Chase & Co. | Add +1.4% | 1.66% | −0.13 |
| LLY Eli Lilly & Co. | Add +1.8% | 2.30% | −0.33 |
| MSFT Microsoft Corp. | Add +0.6% | 4.08% | −1.20 |
| MMM 3M Co. | Add +0.3% | 13.03% | −1.24 |
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 28 | $37.4M | MMM, IJR, DVY, IJK, IVV |
| Q1 2026 | 48 | $43.8M | MMM, IJR, DVY, IJK, IVV |
| Q4 2025 | 51 | $43.9M | MMM, IJR, DVY, MSFT, IJK |
| Q3 2025 | 127 | $46.1M | MMM, IJR, DVY, MSFT, IJK |
| Q2 2025 | 50 | $37.9M | MMM, IJR, DVY, MSFT, IJK |
| Q1 2025 | 50 | $34.7M | MMM, IJR, DVY, MSFT, IJK |
| Q4 2024 | 49 | $33.3M | MMM, IJR, DVY, MSFT, IJK |
| Q3 2024 | 52 | $36.3M | MMM, IJR, DVY, MSFT, IJK |
| Q2 2024 | 55 | $34.4M | MMM, IJR, MSFT, AAPL, DVY |