Corundum Trust Company, INC reported 9 positions worth $8.14M for the quarter ended Sep 30, 2026, up 10.5% on the prior quarter. It opened 0 new positions, added to 0, trimmed 2 and exited 1. Its largest holding is Microsoft Corp at 30.3% of the portfolio.
Reported 13F market value at each quarter end. A change mixes trading with price moves in the positions held.
Dollar value of shares bought and sold each quarter, at that quarter’s price. It counts trading only, not price changes.
How many positions were opened, added to, trimmed or closed each quarter.
Share of reported value in each sector at every quarter end.
No positions were added to this quarter.
No new positions this quarter.
| Holding | Shares Sold | Trade Value | Prior Weight |
|---|---|---|---|
| BA Boeing Co | -958 | $207.38K | 2.82% |
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | MSFT Microsoft Corp | Technology | 4,812 | $2.47M | 30.33% | -11 | -0.2% | Reduced | 0% |
| 2 | AAPL Apple Inc. | Technology | 6,491 | $2.16M | 26.56% | -21 | -0.3% | Reduced | 0% |
| 3 | LLY ELI LILLY & Co | Healthcare | 1,095 | $1.27M | 15.57% | 0 | 0.0% | Unchanged | 0% |
| 4 | C Citigroup Inc | Others | 3,315 | $429.23K | 5.27% | 0 | 0.0% | Unchanged | 0% |
| 5 | AMZN Amazon Com Inc | Consumer Discretionary | 1,703 | $424.30K | 5.21% | 0 | 0.0% | Unchanged | 0% |
| 6 | UNP Union Pacific Corp | Industrials | 1,382 | $376.08K | 4.62% | 0 | 0.0% | Unchanged | 0% |
| 7 | UGI Ugi Corp | Utilities | 9,773 | $348.60K | 4.28% | 0 | 0.0% | Unchanged | 0% |
| 8 | TMO Thermo Fisher Scientific Inc. | Healthcare | 500 | $337.53K | 4.15% | 0 | 0.0% | Unchanged | 0% |
| 9 | BRK-B Berkshire Hathaway Inc | Financial Services | 653 | $325.16K | 4% | 0 | 0.0% | Unchanged | 0% |
Tip. Select a row to see that position’s full history at Corundum Trust Company.
As of its Q3 2026 13F filing, Corundum Trust Company, INC’s five largest positions were Microsoft Corp (MSFT) at 30.3%, Apple Inc. (AAPL) at 26.6%, ELI LILLY & Co (LLY) at 15.6%, Citigroup Inc (C) at 5.3%, Amazon Com Inc (AMZN) at 5.2% of the reported portfolio.
Corundum Trust Company, INC reported a 13F portfolio worth $8.14M across 9 positions for Q3 2026. That is up 10.5% from the previous quarter.
Its largest sales by value were Boeing Co ($207.38K), Apple Inc. ($6.99K), Microsoft Corp ($5.64K). It exited 1 positions entirely.
From the Form 13F-HR reports Corundum Trust Company, INC files with the SEC each quarter, within 45 days of quarter end. A 13F lists long positions in US-listed equities and options; it excludes short positions, cash, bonds and most non-US holdings.
13F data reflects long positions in US-listed equities and options as reported to the SEC up to 45 days after quarter end. It excludes short positions, cash, bonds and most non-US securities, so it is not a complete picture of a manager’s assets.