Managers / Q4 2025 · view latest →
Corundum Trust Company, INC
CIK 0001987720 · 401 E. 8TH STREET, SUITE 303, SIOUX FALLS, SD, 57103 · 16058001992
Summary
Corundum Trust Company, Inc reported $44M in U.S.-listed holdings across 51 positions for Q4 2025.
Its largest position, 3m Company, represents 14.3% of the portfolio.
Compared with Q3 2025, the fund opened 1 new position and exited 77.
Portfolio Metrics
Methodology: turnover is min(value bought, value sold) ÷ average reported value across the two quarters — value-based, so market moves inflate it slightly versus a share-based measure. Concentration and largest position are shares of the filing’s total reported value, options excluded, with multiple share classes and repeated sub-manager rows for the same issuer combined into one position — the same rule the holdings table uses by default. New/exited counts compare against the prior filed quarter. All figures derive solely from the fund’s 13F filings.
Reported Value by Quarter
Portfolio Composition
- Other · 47.3% · $21M
- ETP · 30.9% · $14M
- Common Stock · 21.7% · $10M
Quarter-over-Quarter Changes full breakdown →
vs Q3 2025 (amended baseline)
| Issuer | Move | Share Δ | Shares now | Value Δ | Value now |
|---|---|---|---|---|---|
| NGEX MINERALS LTD NEW COM | NEW | +35.0K | 35.0K | +$653,100 | $653,100 |
| NGEX MINERALS LTD COM | SOLD OUT | −35.0K | 0 | −$652,750 | $0 |
| UGIUGI CORPORATION | SOLD OUT | −9.8K | 0 | −$325,050 | $0 |
| BABOEING CO | SOLD OUT | −886 | 0 | −$191,225 | $0 |
| VWOVANGUARD FTSE EMERGING MARKETS | SOLD OUT | −3.3K | 0 | −$180,148 | $0 |
| TRIPLE FLAG PRECIOUS METALS CO | SOLD OUT | −5.8K | 0 | −$169,767 | $0 |
| MERCK & CO INC | SOLD OUT | −2.0K | 0 | −$164,755 | $0 |
| TARGET CORP | SOLD OUT | −1.8K | 0 | −$164,061 | $0 |
Value changes conflate price moves with buying and selling — share changes are the real signal. Share counts are not split-adjusted.
Holdings — Q4 2025
Filing History
| Quarter | Reported Value | Positions | Filed | Type | Links |
|---|---|---|---|---|---|
| Q1 2026 | $44M | 48 | Apr 15, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q4 2025 | $44M | 51 | Jan 20, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q3 2025 | $46M | 127 | Oct 24, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q2 2025 | $38M | 50 | Jul 28, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q1 2025 | $35M | 50 | Apr 24, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q4 2024 | $33M | 49 | Jan 17, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q3 2024 | $36M | 52 | Oct 22, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q2 2024 | $34M | 55 | Jul 24, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q3 2023 | $33M | 37 | Oct 23, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q2 2023 | $37M | 39 | Aug 3, 2023 | 13F-HR | changes · EDGAR ↗ |
13F filings are due up to 45 days after quarter end, so holdings shown here lag the fund’s current book. Source: original SEC filing on EDGAR ↗.