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Ken Fisher's Builders FirstSource, Inc. (BLDR) position

Not anymore: Ken Fisher fully exited BLDR in Q4 2025. The position peaked at $37M in Q1 2024.
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Value at exit
$2.7M
Shares at exit
22K
Est. average buy price (i)
$72.66
est. since Q1 2021
Quarter-end price
$121.25

Estimated trade prices

Average price in quarters with purchases
$81.95
Average prices in quarters with sales
  • Q3 2025: $132.65 (123K shares sold)
  • Q2 2025: $115.42 (41K shares sold)
  • Q1 2025: $145.49 (9K shares sold)
  • Q2 2024: $169.76 (12K shares sold)
  • Q1 2024: $184.81 (39K shares sold)
  • Q4 2023: $132.90 (8K shares sold)
  • Q3 2023: $137.97 (5K shares sold)
  • Q2 2023: $111.21 (45K shares sold)
  • Q4 2022: $62.46 (55K shares sold)
  • Q1 2022: $72.59 (6K shares sold)
  • Q4 2021: $67.74 (1K shares sold)

BLDR price vs Fisher's position

1Y 3Y 5Y MAX
Dates
$40$100$150$200$25020222023202420252026Added 17K shares (10.1%) · Q3 2021. Average closing price $48.84 · Price range $40.47–$54.9017KsharespurchasedSold 1K shares (0.6%) · Q4 2021. Average closing price $67.74 · Price range $52.58–$85.711KsharessoldSold 6K shares (2.9%) · Q1 2022. Average closing price $72.59 · Price range $64.19–$85.426KsharessoldAdded 19K shares (10.3%) · Q2 2022. Average closing price $61.32 · Price range $50.02–$68.6119KsharespurchasedAdded 81K shares (39.9%) · Q3 2022. Average closing price $62.52 · Price range $52.89–$73.3481KsharespurchasedSold 55K shares (19.4%) · Q4 2022. Average closing price $62.46 · Price range $54.45–$68.2755KsharessoldAdded 48K shares (20.7%) · Q1 2023. Average closing price $79.22 · Price range $65.35–$89.1848KsharespurchasedSold 45K shares (16.4%) · Q2 2023. Average closing price $111.21 · Price range $85.53–$136.1745KsharessoldSold 5K shares (2.1%) · Q3 2023. Average closing price $137.97 · Price range $121.02–$152.225KsharessoldSold 8K shares (3.5%) · Q4 2023. Average closing price $132.90 · Price range $106.22–$170.568KsharessoldSold 39K shares (17.8%) · Q1 2024. Average closing price $184.81 · Price range $157.29–$211.1239KsharessoldSold 12K shares (6.6%) · Q2 2024. Average closing price $169.76 · Price range $136.51–$205.4112KsharessoldAdded 3K shares (2.0%) · Q3 2024. Average closing price $165.82 · Price range $132.60–$201.833KsharespurchasedAdded 26K shares (14.9%) · Q4 2024. Average closing price $176.96 · Price range $142.93–$198.2526KsharespurchasedSold 9K shares (4.7%) · Q1 2025. Average closing price $145.49 · Price range $122.80–$173.519KsharessoldSold 41K shares (22.2%) · Q2 2025. Average closing price $115.42 · Price range $105.63–$131.1241KsharessoldSold 123K shares (84.7%) · Q3 2025. Average closing price $132.65 · Price range $116.91–$149.21123Ksharessold← Earlier —1 purchase
Average closing price · filing quarter
$132.65
Price range · filing quarter
$116.91 – $149.21
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q4 2025 Exited −22K −$2.5M −100.0% 0 Feb 9, 2026
Q3 2025 Reduced −123K −$16M −84.7% 22K Nov 12, 2025
Q2 2025 Reduced −41K −$4.8M −22.2% 146K Aug 13, 2025
Q1 2025 Reduced −9K −$1.3M −4.7% 187K May 14, 2025
Q4 2024 Added +26K +$4.5M +14.9% 196K Feb 5, 2025
Q3 2024 Added +3K +$548K +2.0% 171K Nov 12, 2024
Q2 2024 Reduced −12K −$2.0M −6.6% 168K Aug 14, 2024
Q1 2024 Reduced −39K −$7.2M −17.8% 180K May 9, 2024
Q4 2023 Reduced −8K −$1.1M −3.5% 218K Mar 5, 2024
Q3 2023 Reduced −5K −$671K −2.1% 226K Nov 13, 2023
Q2 2023 Reduced −45K −$5.1M −16.4% 231K Dec 12, 2023
Q1 2023 Added +48K +$3.8M +20.7% 277K Dec 12, 2023
Q4 2022 Reduced −55K −$3.4M −19.4% 229K Feb 3, 2023
Q3 2022 Added +81K +$5.1M +39.9% 284K Nov 8, 2022
Q2 2022 Added +19K +$1.2M +10.3% 203K Aug 9, 2022
Q1 2022 Reduced −6K −$404K −2.9% 184K May 5, 2022
Q4 2021 Reduced −1K −$75K −0.6% 190K Feb 2, 2022
Q3 2021 Added +17K +$852K +10.1% 191K Oct 26, 2021
Q2 2021 Added +852 +$40K +0.5% 173K Jul 27, 2021
Q1 2021 First covered – – – 172K Apr 27, 2021
Data through Q4 2025 · filed Feb 9, 2026
20 grouped rows from 20 quarters

More Fisher positions

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Microsoft Corporation(MSFT)
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Amazon.com, Inc.(AMZN)
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Common questions

Does Ken Fisher own BLDR?

Not currently. Ken Fisher fully exited BLDR in Q4 2025, and the complete history is above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Ken Fisher buy BLDR?

Ken Fisher held BLDR since at least Q1 2021, when this filing coverage begins; the opening snapshot is not a disclosed purchase. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Ken Fisher sell BLDR?

Yes. Ken Fisher reduced and then fully exited BLDR by Q4 2025; the reductions are in the table above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of BLDR does Ken Fisher own?

None as of the latest filing: Ken Fisher has exited BLDR. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Ken Fisher pay for BLDR?

Ken Fisher began building the BLDR position before our 13F history starts, so an exact average buy price cannot be estimated without understating it. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.