Steginsky Capital LLC reported 8 positions worth $609.78M for the quarter ended Sep 30, 2026, down 8.5% on the prior quarter. It opened 0 new positions, added to 0, trimmed 6 and exited 0. Its largest holding is Alphabet Inc. at 36.3% 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.
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| GOOG Alphabet Inc. | -39.0K | -5.7% | $13.28M | 36.34% |
| FAST Fastenal Co | -69.4K | -4.0% | $3.44M | 13.4% |
| MKL Markel Group Inc. | -1,075 | -2.4% | $1.84M | 12.45% |
| MLM Martin Marietta Materials Inc | -3,528 | -2.5% | $1.69M | 10.62% |
| COST Costco Wholesale Corp | -1,841 | -1.4% | $1.68M | 19.92% |
| BRK-B Berkshire Hathaway Inc | -672 | -0.9% | $334.62K | 6.02% |
No new positions this quarter.
No positions were closed this quarter.
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | GOOG Alphabet Inc. | Technology | 650.4K | $221.60M | 36.34% | -39.0K | -5.7% | Reduced | 0.01% |
| 2 | COST Costco Wholesale Corp | Consumer Staples | 133.4K | $121.47M | 19.92% | -1,841 | -1.4% | Reduced | 0.03% |
| 3 | FAST Fastenal Co | Industrials | 1.65M | $81.72M | 13.4% | -69.4K | -4.0% | Reduced | 0.14% |
| 4 | MKL Markel Group Inc. | Financial Services | 44.3K | $75.92M | 12.45% | -1,075 | -2.4% | Reduced | 0.36% |
| 5 | MLM Martin Marietta Materials Inc | Basic Materials | 135.0K | $64.78M | 10.62% | -3,528 | -2.5% | Reduced | 0.22% |
| 6 | BRK-B Berkshire Hathaway Inc | Financial Services | 73.8K | $36.73M | 6.02% | -672 | -0.9% | Reduced | 0.01% |
| 7 | GOOGL Alphabet Inc. | Technology | 13.3K | $4.59M | 0.752% | 0 | 0.0% | Unchanged | 0% |
| 8 | BRK-A Berkshire Hathaway Inc | Financial Services | 4 | $2.99M | 0.49% | 0 | 0.0% | Unchanged | 0% |
Tip. Select a row to see that position’s full history at Steginsky Capital.
As of its Q3 2026 13F filing, Steginsky Capital LLC’s five largest positions were Alphabet Inc. (GOOG) at 36.3%, Costco Wholesale Corp (COST) at 19.9%, Fastenal Co (FAST) at 13.4%, Markel Group Inc. (MKL) at 12.4%, Martin Marietta Materials Inc (MLM) at 10.6% of the reported portfolio.
Steginsky Capital LLC reported a 13F portfolio worth $609.78M across 8 positions for Q3 2026. That is down 8.5% from the previous quarter.
Its largest sales by value were Alphabet Inc. ($13.28M), Fastenal Co ($3.44M), Markel Group Inc. ($1.84M). It exited 0 positions entirely.
From the Form 13F-HR reports Steginsky Capital LLC 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.