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Steginsky Capital LLC

CIK 1120048 · latest 13F filed 7 October 2026 · Read the filing on EDGAR

Steginsky Capital LLC reported 8 US-listed holdings worth $609.8 million in its 13F for the quarter ended 30 September 2026, filed 7 October 2026. Its largest: Alphabet Inc. (36.3%), Costco Wholesale Corp. (19.9%) and Fastenal Co. (13.4%). Against the quarter before, it opened 0 positions, added to 0, trimmed 6 and sold out of 0.

Reported holdings$609.8M-8.5% on Q2 2026
Positions8as many as Q2 2026
The largest ten100.0%of its reported holdings
Latest 13FQ3 2026filed 7 October 2026
Where the money is
HeldTrimmed
GOOG36.3%COST19.9%FAST13.4%MKL12.4%MLM10.6%BRKB6.0%GOOBer

The 8 largest of its 8 positions, each sized by its share of the reported holdings, coloured by the change in shares against Q2 2026.

Reported holdings, quarter by quarter
Q3 2024: $440.6 million in 7 positions$441MQ3 24Q4 2024: $466.9 million in 7 positions$467MQ4 24Q1 2025: $447.2 million in 7 positions$447MQ1 25Q2 2025: $489.1 million in 8 positions$489MQ2 25Q3 2025: $544.6 million in 8 positions$545MQ3 25Q4 2025: $593.4 million in 8 positions$593MQ4 25Q1 2026: $605.1 million in 8 positions$605MQ1 26Q2 2026: $666.3 million in 8 positions$666MQ2 26Q3 2026: $609.8 million in 8 positions$610MQ3 26

What the fund reported holding at each quarter's end; hover a bar for the number of positions

What its reported holdings returned

Held through each quarter, the holdings it reported returned +33.0% over the 8 quarters to 30 September 2026, against +32.9% for the S&P 500.

Its reported holdingsThe S&P 500
105120135Q3 24Q4 24Q1 25Q2 25Q3 25Q4 25Q1 26Q2 26Q3 26Its holdings +33.0%S&P 500 +32.9%

Not the fund's own return: each 13F's holdings are kept unchanged until the next one, so trades inside a quarter, dividends, cash and fees are left out. A rough guide to how its picks have done over time.

What it did on the quarter

Held 2Trimmed 6
Held: 2Trimmed: 6

Its positions against its 13F for the quarter to 30 June 2026; a change under 0.1% of a position counts as held

Trimmed 6

  1. Alphabet Inc. GOOG-38,970 shares · -6%
  2. Fastenal Co. FAST-69,388 shares · -4%
  3. Markel CP Hldg Co. MKL-1,075 shares · -2%
  4. Martin Marietta Materials Inc. MLM-3,528 shares · -3%
  5. Costco Wholesale Corp. COST-1,841 shares · -1%
  6. Berkshire Hathaway Inc. Class B BRKB-672 shares · -1%

What it holds

CompanySharesValueOf its bookChange in shares
Alphabet Inc. GOOG650.4K$221.6 million36.34%-39.0K
Costco Wholesale Corp. COST133.4K$121.5 million19.92%-1.8K
Fastenal Co. FAST1.6M$81.7 million13.40%-69.4K
Markel CP Hldg Co. MKL44.3K$75.9 million12.45%-1.1K
Martin Marietta Materials Inc. MLM135.0K$64.8 million10.62%-3.5K
Berkshire Hathaway Inc. Class B BRKB73.8K$36.7 million6.02%-672
Alphabet Inc. GOOGL13.3K$4.6 million0.75%no change
Berkshire Hathaway Inc. Del4$3.0 million0.49%no change
Every US-listed position in the fund's 13F for the quarter ended 30 September 2026, by the value it reported.
Read moreChange is shares against its 13F for the quarter before.