Q3 2026 13F · SEC CIK 1120048
Steginsky Capital LLC
Wealth managerFiled 2026-10-07 for Q3 2026. Open the filing ↗ · All SEC filings ↗
- Reported 13F value
- $609.8M
- Reported positions
- 8
- Top holdings a year, 3 yrs
- +21.8%
- Assets under management
- $599.0M
Steginsky Capital LLC is a wealth manager that reported 8 positions worth $609.8M in its Q3 2026 13F, filed 2026-10-07. Its largest holdings were Alphabet Inc (GOOG, 36.3%), Costco Wholesale Corporation (COST, 19.9%), Fastenal Co (FAST, 13.4%). A portfolio copying its top holdings returned 21.8% a year over the last 3 years, against 20.4% for the S&P 500.
Steginsky Capital LLC holdings all 8 positions.
Weights are shares of the filer's total reported 13F value, compared with Q2 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.
| Stock | % of 13F value | Share change | Reported value |
|---|---|---|---|
| GOOGAlphabet Inc | 36.3% | -5.7% | $221.6M |
| COSTCostco Wholesale Corporation | 19.9% | -1.4% | $121.5M |
| FASTFastenal Co | 13.4% | -4.0% | $81.7M |
| MKLMarkel Group Inc | 12.4% | -2.4% | $75.9M |
| MLMMartin Marietta Matls Inc | 10.6% | -2.5% | $64.8M |
| BRK-BBerkshire Hathaway Inc Del | 6.0% | -0.9% | $36.7M |
| GOOGLAlphabet Inc | 0.8% | +0.0% | $4.6M |
| BRK-ABerkshire Hathaway Inc Del | 0.5% | +0.0% | $3.0M |
What Steginsky Capital LLC bought and sold in Q3 2026, against Q2 2026.
New positions
No new positions among the largest holdings.
Added to
No position grew by more than 5%.
Reduced
- GOOG Alphabet Inc-5.7% shares
Sold out
Nothing sold out.
Share counts compared with the Q2 2026 13F; a split also changes share counts.
How the holdings did against the S&P 500.
- 1 year
- +17.6% /yr
- S&P 500 +20.1%
- 3 years
- +21.8% /yr
- S&P 500 +20.4%
- 5 years
- +15.3% /yr
- S&P 500 +11.6%
A portfolio of the filer's 20 largest 13F positions, weighted by value, bought the trading day after each 13F was filed and held until the next one was: what copying this filer could have earned. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.
Reported 13F value by quarter.
| Quarter | 13F value | Positions |
|---|---|---|
| Q3 2026 | $609.8M | 8 |
| Q2 2026 | $666K | 8 |
| Q1 2026 | $605K | 8 |
| Q4 2025 | $593K | 8 |
| Q3 2025 | $545K | 8 |
| Q2 2025 | $489K | 8 |
| Q1 2025 | $447.2M | 7 |
| Q4 2024 | $466.9M | 7 |
| Q3 2024 | $440.6M | 7 |
| Q2 2024 | $435.3M | 7 |
| Q1 2024 | $415.3M | 7 |
| Q4 2023 | $363.0M | 7 |
Questions about Steginsky Capital LLC's portfolio
What stocks does Steginsky Capital LLC own?
Steginsky Capital LLC's latest 13F, for Q3 2026 and filed Oct 7, 2026, lists 8 positions worth $609.8M. The largest are Alphabet Inc (GOOG) at 36.3%, Costco Wholesale Corporation (COST) at 19.9%, Fastenal Co (FAST) at 13.4%, Markel Group Inc (MKL) at 12.4% and Martin Marietta Matls Inc (MLM) at 10.6%.
What did Steginsky Capital LLC buy last quarter?
Steginsky Capital LLC opened no new positions and grew none by more than 5% among its largest holdings in Q3 2026.
What did Steginsky Capital LLC sell last quarter?
In Q3 2026, Steginsky Capital LLC Alphabet Inc (GOOG) (-5.7% shares), compared with its Q2 2026 filing.
How has Steginsky Capital LLC's portfolio performed?
A portfolio copying Steginsky Capital LLC's 20 largest 13F holdings each quarter, from the day each filing was public, returned +21.8% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +17.6% against +20.1%. Over 5 years: +15.3% a year against +11.6%.
When is Steginsky Capital LLC's next 13F filing due?
13F filings are due 45 days after each quarter ends. Steginsky Capital LLC's filing for the quarter ending Dec 31, 2026 is due by Feb 14, 2027; this page updates the day after it is published.
How much money does Steginsky Capital LLC manage?
Steginsky Capital LLC reported $599.0M of regulatory assets under management on its latest SEC Form ADV. Its 13F, which covers only US-listed stocks and options, totals $609.8M.