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← Ruane Cunniff & Goldfarb LP, its record

Ruane Cunniff & Goldfarb LP and Artisan Partners LP: where the books meet

At Q2 2026, 17% of the two 13F books was the same, across 22 stocks both listed, against 6.4% at Q2 2013. Overlap is the smaller of each shared stock’s two weights, added up: the part of one book that could be swapped for the other’s without a trade.

Overlap by quarter
0%8%17%Q2 2013: 6.4%, 43 in bothQ3 2013: 6.1%, 35 in bothQ4 2013: 6.4%, 37 in bothQ1 2014: 6.2%, 38 in both14Q2 2014: 6.2%, 45 in bothQ3 2014: 6.7%, 47 in bothQ4 2014: 6.4%, 43 in bothQ1 2015: 5.0%, 44 in both15Q2 2015: 5.1%, 42 in bothQ3 2015: 3.1%, 41 in bothQ4 2015: 5.6%, 45 in bothQ1 2016: 6.6%, 44 in both16Q2 2016: 8.3%, 39 in bothQ3 2016: 8.1%, 34 in bothQ4 2016: 9.1%, 30 in bothQ1 2017: 9.8%, 26 in both17Q2 2017: 9.4%, 20 in bothQ3 2017: 7.0%, 23 in bothQ4 2017: 7.5%, 21 in bothQ1 2018: 7.3%, 19 in both18Q2 2018: 8.0%, 19 in bothQ3 2018: 6.6%, 21 in bothQ4 2018: 8.3%, 18 in bothQ1 2019: 9.5%, 15 in both19Q2 2019: 8.2%, 14 in bothQ3 2019: 8.7%, 16 in bothQ4 2019: 9.1%, 15 in bothQ1 2020: 11%, 13 in both20Q2 2020: 8.2%, 13 in bothQ3 2020: 10%, 15 in bothQ4 2020: 10.0%, 17 in bothQ1 2021: 13%, 19 in both21Q2 2021: 12%, 17 in bothQ3 2021: 11%, 13 in bothQ4 2021: 10%, 15 in bothQ1 2022: 11%, 14 in both22Q2 2022: 10%, 13 in bothQ3 2022: 10%, 12 in bothQ4 2022: 9.7%, 12 in bothQ1 2023: 9.7%, 12 in both23Q2 2023: 9.7%, 14 in bothQ3 2023: 9.6%, 13 in bothQ4 2023: 9.6%, 12 in bothQ1 2024: 11%, 13 in both24Q2 2024: 12%, 15 in bothQ3 2024: 12%, 13 in bothQ4 2024: 13%, 17 in bothQ1 2025: 14%, 16 in both25Q2 2025: 14%, 19 in bothQ3 2025: 14%, 18 in bothQ4 2025: 16%, 20 in bothQ1 2026: 15%, 21 in both26Q2 2026: 17%, 22 in both
  • Q2 2013: 6.4%, 43 in both
  • Q3 2013: 6.1%, 35 in both
  • Q4 2013: 6.4%, 37 in both
  • Q1 2014: 6.2%, 38 in both
  • Q2 2014: 6.2%, 45 in both
  • Q3 2014: 6.7%, 47 in both
  • Q4 2014: 6.4%, 43 in both
  • Q1 2015: 5.0%, 44 in both
  • Q2 2015: 5.1%, 42 in both
  • Q3 2015: 3.1%, 41 in both
  • Q4 2015: 5.6%, 45 in both
  • Q1 2016: 6.6%, 44 in both
  • Q2 2016: 8.3%, 39 in both
  • Q3 2016: 8.1%, 34 in both
  • Q4 2016: 9.1%, 30 in both
  • Q1 2017: 9.8%, 26 in both
  • Q2 2017: 9.4%, 20 in both
  • Q3 2017: 7.0%, 23 in both
  • Q4 2017: 7.5%, 21 in both
  • Q1 2018: 7.3%, 19 in both
  • Q2 2018: 8.0%, 19 in both
  • Q3 2018: 6.6%, 21 in both
  • Q4 2018: 8.3%, 18 in both
  • Q1 2019: 9.5%, 15 in both
  • Q2 2019: 8.2%, 14 in both
  • Q3 2019: 8.7%, 16 in both
  • Q4 2019: 9.1%, 15 in both
  • Q1 2020: 11%, 13 in both
  • Q2 2020: 8.2%, 13 in both
  • Q3 2020: 10%, 15 in both
  • Q4 2020: 10.0%, 17 in both
  • Q1 2021: 13%, 19 in both
  • Q2 2021: 12%, 17 in both
  • Q3 2021: 11%, 13 in both
  • Q4 2021: 10%, 15 in both
  • Q1 2022: 11%, 14 in both
  • Q2 2022: 10%, 13 in both
  • Q3 2022: 10%, 12 in both
  • Q4 2022: 9.7%, 12 in both
  • Q1 2023: 9.7%, 12 in both
  • Q2 2023: 9.7%, 14 in both
  • Q3 2023: 9.6%, 13 in both
  • Q4 2023: 9.6%, 12 in both
  • Q1 2024: 11%, 13 in both
  • Q2 2024: 12%, 15 in both
  • Q3 2024: 12%, 13 in both
  • Q4 2024: 13%, 17 in both
  • Q1 2025: 14%, 16 in both
  • Q2 2025: 14%, 19 in both
  • Q3 2025: 14%, 18 in both
  • Q4 2025: 16%, 20 in both
  • Q1 2026: 15%, 21 in both
  • Q2 2026: 17%, 22 in both

Only quarters both managers filed. Where either filing has more positions than are read each quarter, a stock both hold below that range is not counted, so the figure is a floor.

What the overlap is made of, Q2 2026

Stocks both listed, by the smaller of the two weights. A weight is the stock’s share of that manager’s reported book, which says how large the position is, not how strongly it is held.

StockRuane Cunniff & Goldfarb LPArtisan Partners LP
Alphabet Inc Cl A(GOOGL)11%Trimmed3.1%Trimmed
Anthem Inc(ELV)5.9%Trimmed2.8%Trimmed
Schwab Charles Corp(SCHW)6.6%Trimmed2.8%Added
Icon PLC(ICLR)5.5%Added2.4%Added
Berkshire Hathaway - Cl B(BRK-B)2.3%Trimmed2.3%Added
Facebook Inc(META)1.4%Trimmed2.1%Added
Taiwan Semiconductor MFG LTD(TSM)8.7%Trimmed0.9%Trimmed
Capital One Finl Corp(COF)6.1%Trimmed0.4%Trimmed
Liberty Media Corp Del(FWONK)7.7%Trimmed0.3%Added
Unitedhealth Group Inc(UNH)4.6%Trimmed0.1%New
Micron Technology Inc(MU)under 0.1%Held0.3%Added
Align Technology Inc.(ALGN)3.1%Trimmedunder 0.1%Trimmed
Alphabet Inc. Cl C(GOOG)5.1%Trimmedunder 0.1%Trimmed
Accenture PLC Ireland(ACN)1.7%Trimmedunder 0.1%Trimmed
Netflix Com Inc(NFLX)under 0.1%Heldunder 0.1%Added
P31076105(CPA)under 0.1%Heldunder 0.1%Added
Kaspi KZ JSC(KSPI)under 0.1%Trimmedunder 0.1%Added
American Express(AXP)under 0.1%Held2.4%Trimmed
Apple Computer(AAPL)under 0.1%Held0.3%Added
Ferguson Enterprises Inc(FERG)under 0.1%Heldunder 0.1%Trimmed

and 2 smaller ones

Moved different ways in Q2 2026

Stocks one manager started or added to while the other trimmed or sold out, between the same two quarter ends. A 13F shows the quarter ends, never when in between anything was bought or sold, or why.

  • Schwab Charles Corp(SCHW)Ruane Cunniff & Goldfarb LP trimmed; Artisan Partners LP added
  • Berkshire Hathaway - Cl B(BRK-B)Ruane Cunniff & Goldfarb LP trimmed; Artisan Partners LP added
  • Facebook Inc(META)Ruane Cunniff & Goldfarb LP trimmed; Artisan Partners LP added
  • Liberty Media Corp Del(FWONK)Ruane Cunniff & Goldfarb LP trimmed; Artisan Partners LP added
  • Unitedhealth Group Inc(UNH)Ruane Cunniff & Goldfarb LP trimmed; Artisan Partners LP started
  • Kaspi KZ JSC(KSPI)Ruane Cunniff & Goldfarb LP trimmed; Artisan Partners LP added
  • Bank of America Corp(BAC)Ruane Cunniff & Goldfarb LP started; Artisan Partners LP trimmed
Ruane Cunniff & Goldfarb LP: the recordArtisan Partners LP: the record

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