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Steginsky Capital LLC Andrew Steginsky

Port Washington, NY 21 processed 13Fs on this site, 2021 Q3 to 2026 Q3

  • $610M
  • 8 holdings
  • 2026 Q3
  • −8.4% QoQ
  • Top 5 92.7%

Portfolio

2026 Q3, filed 10/7/2026, 8 holdings

Top 5 92.7%, top 10 100.0%

  1. GOOG, Alphabet 36.3%
  2. COST, Costco 19.9%
  3. FAST, Fastenal 13.4%
  4. MKL, Markel Group 12.5%
  5. MLM, Martin Marietta Materials 10.6%
  6. BRK.B, Berkshire Hathaway Class B 6.0%
  7. GOOGL, Alphabet Class A 0.8%
  8. BRK.A, Berkshire Hathaway Class A 0.5%

AUM over time

2026 Q3 $610M −8.4% QoQ
2021 Q3: $266M 2021 Q3: $266M
Q3 2021
2021 Q4: $305M, +14.7% QoQ 2021 Q4: $305M, +14.7% QoQ
Q4
2022 Q1: $325M, +6.6% QoQ 2022 Q1: $325M, +6.6% QoQ
Q1 2022
2022 Q2: $280M, −13.8% QoQ 2022 Q2: $280M, −13.8% QoQ
Q2
2022 Q3: $263M, −6.1% QoQ 2022 Q3: $263M, −6.1% QoQ
Q3
2022 Q4: $271M, +3.0% QoQ 2022 Q4: $271M, +3.0% QoQ
Q4
2023 Q1: $280M, +3.3% QoQ 2023 Q1: $280M, +3.3% QoQ
Q1 2023
2023 Q2: $320M, +14.3% QoQ 2023 Q2: $320M, +14.3% QoQ
Q2
2023 Q3: $325M, +1.6% QoQ 2023 Q3: $325M, +1.6% QoQ
Q3
2023 Q4: $363M, +11.7% QoQ 2023 Q4: $363M, +11.7% QoQ
Q4
2024 Q1: $415M, +14.3% QoQ 2024 Q1: $415M, +14.3% QoQ
Q1 2024
2024 Q2: $435M, +4.8% QoQ 2024 Q2: $435M, +4.8% QoQ
Q2
2024 Q3: $441M, +1.4% QoQ 2024 Q3: $441M, +1.4% QoQ
Q3
2024 Q4: $467M, +5.9% QoQ 2024 Q4: $467M, +5.9% QoQ
Q4
2025 Q1: $447M, −4.3% QoQ 2025 Q1: $447M, −4.3% QoQ
Q1 2025
2025 Q2: $489M, +9.4% QoQ 2025 Q2: $489M, +9.4% QoQ
Q2
2025 Q3: $545M, +11.5% QoQ 2025 Q3: $545M, +11.5% QoQ
Q3
2025 Q4: $593M, +8.8% QoQ 2025 Q4: $593M, +8.8% QoQ
Q4
2026 Q1: $605M, +2.0% QoQ 2026 Q1: $605M, +2.0% QoQ
Q1 2026
2026 Q2: $666M, +10.1% QoQ 2026 Q2: $666M, +10.1% QoQ
Q2
2026 Q3: $610M, −8.4% QoQ 2026 Q3: $610M, −8.4% QoQ
Q3

Book

2025 Q2 2025 Q1, filed 12 Aug, long equity only

Download CSV Download Excel All activity
COST, Costco 26.32%, was 29.00% Reduce −5.1% 130,055 $989.94 $129M −7,043 −$918K
GOOG, Alphabet 24.45%, was 22.05% Add +6.8% 674,065 $177.39 $120M +42,790 +$21M
MKL, Markel Group 16.16% Add +1.2% 39,561 $1,997 $79M +463 +$5.9M
MLM, Martin Marietta Materials 13.33%, was 12.19% Add +4.2% 118,762 $548.96 $65M +4,751 +$11M
FAST, Fastenal 12.50% Add +100.3% 1,455,043 $42.00 $61M +728,537 +$4.8M
BRK.B, Berkshire Hathaway Class B 6.33% Add +3.1% 63,698 $485.78 $31M +1,891 −$2M
GOOGL, Alphabet Class A 0.47% Hold 13,071 $176.27 $2.3M — —
BRK.A, Berkshire Hathaway Class A 0.45% New 3 $728,667 $2.2M +3 +$2.2M

Weight bar: held both quarters added sold at this quarter’s reported price

* Reported price is value ÷ shares from the 13F as of period end, not a live market quote. Weight % is each long-equity position ÷ full 13F AUM, so rows may not sum to 100% when the filing includes options or other non-equity (excluded from this table). Share change and $ change are vs 2025 Q1. Click a column header to sort, or New, Hold, Add or Reduce to bring those moves to the top.

Filings history

21 periods, with AUM normalized

Newest 13Fs
Period Holds AUM QoQ Form Filed Filing ID
2026 Q3 8 $610M −8.4% 13F-HR 10/7/2026 000112004826000004
2026 Q2 8 $666M +10.1% 13F-HR 7/9/2026 000112004826000003
2026 Q1 8 $605M +2.0% 13F-HR 5/4/2026 000112004826000002
2025 Q4 8 $593M +8.8% 13F-HR 2/5/2026 000112004826000001
2025 Q3 8 $545M +11.5% 13F-HR 11/13/2025 000112004825000005
2025 Q2 8 $489M +9.4% 13F-HR 8/12/2025 000112004825000003
2025 Q1 7 $447M −4.3% 13F-HR 5/15/2025 000112004825000002
2024 Q4 7 $467M +5.9% 13F-HR 2/11/2025 000112004825000001
2024 Q3 7 $441M +1.4% 13F-HR 11/12/2024 000112004824000005
2024 Q2 7 $435M +4.8% 13F-HR 8/14/2024 000112004824000004
2024 Q1 7 $415M +14.3% 13F-HR 5/13/2024 000112004824000002
2023 Q4 7 $363M +11.7% 13F-HR 2/14/2024 000112004824000001
2023 Q3 7 $325M +1.6% 13F-HR 11/14/2023 000112004823000004
2023 Q2 7 $320M +14.3% 13F-HR 7/13/2023 000112004823000003
2023 Q1 7 $280M +3.3% 13F-HR 5/12/2023 000112004823000002
2022 Q4 7 $271M +3.0% 13F-HR 1/31/2023 000112004823000001
2022 Q3 7 $263M −6.1% 13F-HR 11/14/2022 000112004822000004
2022 Q2 7 $280M −13.8% 13F-HR 7/26/2022 000112004822000003
2022 Q1 7 $325M +6.6% 13F-HR 5/13/2022 000112004822000002
2021 Q4 7 $305M +14.7% 13F-HR 2/10/2022 000112004822000001
2021 Q3 8 $266M — 13F-HR 11/12/2021 000112004821000004

About

Steginsky Capital LLC

21 processed 13Fs on this site, 2021 Q3 to 2026 Q3

Entity
Steginsky Capital LLC
Notable person
Andrew Steginsky
Location
Port Washington, NY
All SEC filings
View on sec.gov