Corundum Trust Company, INC
In its 13F for Q4 2025 (holdings as of December 31, 2025, filed January 20, 2026), Corundum Trust Company, INC reported 51 stock positions worth $43.9 million. Its top holding was 3M (MMM) at 14.3% of the portfolio, followed by iShares Core S&P Small-Cap E (IJR, 8.2%) and iShares Select Dividend ETF (DVY, 6.1%). Compared with Q3 2025, it opened 1 new position, sold out of 77, added to 1 and reduced 15. The biggest buy was a new position in Ngex Minerals (NGXXF) and the biggest sale an exit from Ngex Minerals.
- Most Recent 13F
- Q2 2026
- Location
- SIOUX FALLS, SD
- CIK
- 0001987720
- Portfolio Value
- $43.9M (Q4 2025)
- SEC Filing
- 0001987720-26-000001 ↗ filed Jan 20, 2026
Holdings Value
Holdings 51 stocks · $43.9M
| MMM 3M Co. | 14.27% | 39,155 | $6.3M | Reduce -3.1% |
| IJR iShares Core S&P Small-Cap E | 8.23% | 30,082 | $3.6M | Reduce -6.3% |
| DVY iShares Select Dividend ETF | 6.06% | 18,872 | $2.7M | Reduce -0.8% |
| MSFT Microsoft Corp. | 5.28% | 4,794 | $2.3M | Reduce -0.8% |
| IJK iShares S&P Mid-Cap 400 Grow | 4.80% | 21,744 | $2.1M | No change |
| IVV iShares Core S&P 500 ETF | 4.59% | 2,943 | $2.0M | Reduce -0.5% |
| GOOG Alphabet Inc. Class C | 4.20% | 5,881 | $1.8M | Reduce -2.4% |
| IJJ iShares S&P Mid-Cap 400 Valu | 3.94% | 13,166 | $1.7M | No change |
| AAPL Apple Inc. | 3.83% | 6,189 | $1.7M | Reduce -5.2% |
| DiscoverySilverCorp | 3.58% | 257,500 | $1.6M | No change |
| SKE Skeena Resources Ltd. | 3.44% | 63,750 | $1.5M | No change |
| EFA iShares MSCI Eafe ETF | 2.69% | 12,319 | $1.2M | Reduce -3.2% |
| LLY Eli Lilly & Co. | 2.63% | 1,076 | $1.2M | Reduce -2.2% |
| GGPSF Greatland Resources Ltd. | 2.39% | 151,250 | $1.0M | No change |
| LUGDF Lundin Gold Inc. | 2.08% | 11,000 | $913K | No change |
| WDOFF Wesdome Gold Mines Ltd. | 1.81% | 48,000 | $795K | No change |
| JPM JPMorgan Chase & Co. | 1.79% | 2,442 | $787K | Reduce -1.8% |
| SOLV Solventum Corp. | 1.77% | 9,831 | $779K | Reduce -2.8% |
| NGXXF Ngex Minerals Ltd. | 1.49% | 35,000 | $653K | New |
| CSCO Cisco Systems Inc. | 1.34% | 7,652 | $589K | Reduce -1.8% |
| AYA Aya Gold & Silver Inc. | 1.31% | 40,000 | $575K | No change |
| VTHR Vanguard Russell 3000 | 1.29% | 1,892 | $568K | No change |
| UNH Unitedhealth Group Inc. | 1.13% | 1,499 | $495K | No change |
| SPY SS SPDR S&P 500 ETF Trust-US | 1.03% | 662 | $451K | Reduce -59.0% |
| FNV Franco-Nevada Corp. | 0.94% | 2,000 | $415K | No change |
| NEM Newmont Corp. | 0.91% | 4,000 | $399K | No change |
| C Citigroup Inc. | 0.88% | 3,315 | $387K | No change |
| AMZN Amazon.com Inc. | 0.88% | 1,672 | $386K | Reduce -2.3% |
| VZLA Vizsla Silver Corp. | 0.87% | 70,250 | $384K | Add +16.6% |
| SNWGF Snowline Gold Corp. | 0.77% | 27,000 | $340K | No change |
| AEM Agnico Eagle Mines Ltd. | 0.77% | 2,000 | $339K | No change |
| CAHPF Evolution Mining Ltd. | 0.77% | 40,000 | $337K | No change |
| NESRF Northern Star Resources Ltd. filed as NTHN STAR RES LTD NPV | 0.75% | 18,500 | $328K | No change |
| BRK.B Berkshire Hathaway Inc. Class B | 0.73% | 638 | $321K | Reduce -3.2% |
| UNP Union Pacific Corp. | 0.73% | 1,382 | $320K | No change |
| RUPRF Rupert Resources Ltd. | 0.68% | 63,500 | $298K | No change |
| TMO Thermo Fisher Scientific Inc. | 0.66% | 500 | $290K | No change |
| KGC Kinross Gold Corp. | 0.64% | 10,000 | $282K | No change |
| EEM iShares MSCI Emerging Market | 0.60% | 4,810 | $263K | No change |
| SXGCF Southern Cross Gold Consolid | 0.53% | 30,000 | $232K | No change |
| OR Or Royalties Inc. | 0.48% | 6,000 | $212K | No change |
| GMINF G Mining Venture Corp. | 0.48% | 7,000 | $212K | No change |
| AG First Majestic Silver Corp. | 0.46% | 12,000 | $200K | No change |
| AIRRF Aurion Resources Ltd. | 0.36% | 156,125 | $158K | No change |
| RMLRF Ramelius Resources Ltd. | 0.22% | 34,785 | $96K | No change |
| OGNNF Orogen Royalties Inc. | 0.22% | 50,000 | $95K | No change |
| ONXGF Onyx Gold Corp. | 0.19% | 75,000 | $82K | No change |
| DYLLF Deep Yellow Ltd. | 0.17% | 62,162 | $76K | No change |
| BYAGF Banyan Gold Corp. | 0.15% | 100,000 | $66K | No change |
| GLGDF Gogold Resources Inc. | 0.15% | 30,000 | $64K | No change |
| WLFFF Wolfden Resources Corp. | 0.04% | 398,802 | $16K | No change |
Portfolio Sells Q3 2025 → Q4 2025
| NGEX MINERALS LTD | Sold out | 0.00% | −1.42 |
| SPY SS SPDR S&P 500 ETF Trust-US | Reduce -59.0% | 1.03% | −1.31 |
| UGI Ugi Corp. | Sold out | 0.00% | −0.71 |
| BA The Boeing Co. | Sold out | 0.00% | −0.41 |
| VWO Vanguard Ftse Emerging Marke | Sold out | 0.00% | −0.39 |
| TFPM Triple Flag Precious Met | Sold out | 0.00% | −0.37 |
| MRK Merck & Co. Inc. | Sold out | 0.00% | −0.36 |
| TGT Target Corp. | Sold out | 0.00% | −0.36 |
| DIS The Walt Disney Co. | Sold out | 0.00% | −0.33 |
| CMCSA Comcast Corp. Class A | Sold out | 0.00% | −0.32 |
| PSP Invesco Global Listed Privat | Sold out | 0.00% | −0.30 |
| NVDA Nvidia Corp. | Sold out | 0.00% | −0.27 |
| WPM Wheaton Precious Metals Corp. | Sold out | 0.00% | −0.24 |
| GLD SPDR Gold Shares | Sold out | 0.00% | −0.23 |
| HD Home Depot Inc. | Sold out | 0.00% | −0.22 |
| META Meta Platforms Inc. Class A | Sold out | 0.00% | −0.21 |
| IWM iShares Russell 2000 ETF | Sold out | 0.00% | −0.21 |
| PAAS Pan American Silver Corp. | Sold out | 0.00% | −0.21 |
| IVW iShares S&P 500 Growth ETF | Sold out | 0.00% | −0.21 |
| IWB iShares Russell 1000 ETF | Sold out | 0.00% | −0.20 |
| FTGC First Trust Global Tactical | Sold out | 0.00% | −0.20 |
| PREDICTIVE DISCOVERY LTD MELBO | Sold out | 0.00% | −0.18 |
| VONV Vanguard Russell 1000 Value | Sold out | 0.00% | −0.18 |
| V Visa Inc. Class A | Sold out | 0.00% | −0.16 |
| SPLV Invesco S&P 500 Low Volatili | Sold out | 0.00% | −0.16 |
| MSFT Microsoft Corp. | Reduce -0.8% | 5.28% | −0.15 |
| UPS United Parcel Service Class B | Sold out | 0.00% | −0.14 |
| ABBV Abbvie Inc. | Sold out | 0.00% | −0.14 |
| F Ford Motor Co. | Sold out | 0.00% | −0.13 |
| IWO iShares Russell 2000 Growth | Sold out | 0.00% | −0.13 |
| CE Celanese Corp. | Sold out | 0.00% | −0.12 |
| ARGTF Artemis Gold Inc. | Sold out | 0.00% | −0.11 |
| PNC PNC Financial Services Group | Sold out | 0.00% | −0.11 |
| AMP Ameriprise Financial Inc. | Sold out | 0.00% | −0.11 |
| CNL Collective Mining Ltd. | Sold out | 0.00% | −0.09 |
| VAIAF Vaisala Oyj- A SHS | Sold out | 0.00% | −0.09 |
| XLU St Sr Utl SL SE SPDR ETF-Usd | Sold out | 0.00% | −0.09 |
| ORCL Oracle Corp. | Sold out | 0.00% | −0.08 |
| VOO Vanguard S&P 500 ETF | Sold out | 0.00% | −0.08 |
| PG The Procter & Gamble Co. | Sold out | 0.00% | −0.07 |
| CME Cme Group Inc. | Sold out | 0.00% | −0.07 |
| INTC Intel Corp. | Sold out | 0.00% | −0.06 |
| CVS CVS Health Corp. | Sold out | 0.00% | −0.06 |
| GS Goldman Sachs Group Inc. | Sold out | 0.00% | −0.06 |
| ECL Ecolab Inc. | Sold out | 0.00% | −0.06 |
| TDGGF TDG Gold Corp. | Sold out | 0.00% | −0.06 |
| MDT Medtronic PLC | Sold out | 0.00% | −0.06 |
| GILD Gilead Sciences Inc. | Sold out | 0.00% | −0.06 |
| DUK Duke Energy Corp. | Sold out | 0.00% | −0.05 |
| BLK BlackRock Inc. | Sold out | 0.00% | −0.05 |
Portfolio Buys Q3 2025 → Q4 2025
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 |