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← Woodline Partners LP, its record

Woodline Partners LP and Acadian Asset Management LLC: where the books meet

At Q2 2026, at least 36% of the two 13F books was the same, across 162 stocks both listed, against 4.9% at Q4 2019. 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%18%36%Q4 2019: 4.9%, 20 in bothQ1 2020: 7.9%, 31 in both20Q2 2020: 12%, 44 in bothQ3 2020: 11%, 46 in bothQ4 2020: 9.5%, 48 in bothQ1 2021: 11%, 51 in both21Q2 2021: 12%, 49 in bothQ3 2021: 14%, 66 in bothQ4 2021: 14%, 65 in bothQ1 2022: 11%, 46 in both22Q2 2022: 9.2%, 50 in bothQ3 2022: 10%, 62 in bothQ4 2022: 11%, 75 in bothQ1 2023: 13%, 83 in both23Q2 2023: 13%, 83 in bothQ3 2023: 14%, 102 in bothQ4 2023: 12%, 88 in bothQ1 2024: 12%, 98 in both24Q2 2024: 13%, 93 in bothQ3 2024: 12%, 92 in bothQ4 2024: 21%, 139 in bothQ1 2025: 25%, 148 in both25Q2 2025: 30%, 151 in bothQ3 2025: 31%, 143 in bothQ4 2025: 31%, 151 in bothQ1 2026: 34%, 159 in both26Q2 2026: 36%, 162 in both
  • Q4 2019: 4.9%, 20 in both
  • Q1 2020: 7.9%, 31 in both
  • Q2 2020: 12%, 44 in both
  • Q3 2020: 11%, 46 in both
  • Q4 2020: 9.5%, 48 in both
  • Q1 2021: 11%, 51 in both
  • Q2 2021: 12%, 49 in both
  • Q3 2021: 14%, 66 in both
  • Q4 2021: 14%, 65 in both
  • Q1 2022: 11%, 46 in both
  • Q2 2022: 9.2%, 50 in both
  • Q3 2022: 10%, 62 in both
  • Q4 2022: 11%, 75 in both
  • Q1 2023: 13%, 83 in both
  • Q2 2023: 13%, 83 in both
  • Q3 2023: 14%, 102 in both
  • Q4 2023: 12%, 88 in both
  • Q1 2024: 12%, 98 in both
  • Q2 2024: 13%, 93 in both
  • Q3 2024: 12%, 92 in both
  • Q4 2024: 21%, 139 in both
  • Q1 2025: 25%, 148 in both
  • Q2 2025: 30%, 151 in both
  • Q3 2025: 31%, 143 in both
  • Q4 2025: 31%, 151 in both
  • Q1 2026: 34%, 159 in both
  • Q2 2026: 36%, 162 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.

StockWoodline Partners LPAcadian Asset Management LLC
Nvidia Corp(NVDA)3.3%Added4.6%Added
Apple Inc(AAPL)2.9%Added5.5%Added
Microsoft Corp(MSFT)1.9%Added2.1%Trimmed
Amazon Com Inc(AMZN)1.8%Trimmed2.4%Added
Facebook Inc(META)1.4%Added1.3%Added
Broadcom Inc(AVGO)1.4%Added1.3%Added
Alphabet Inc(GOOGL)1.2%Trimmed2.6%Trimmed
Alphabet Inc(GOOG)1.1%Added1.2%Trimmed
Micron Technology Inc(MU)1.0%Trimmed1.6%Trimmed
Lilly Eli & Co(LLY)0.9%Added0.7%Trimmed
JPMorgan Chase & Co.(JPM)0.6%Added0.9%Trimmed
Advanced Micro Devices Inc(AMD)0.6%Trimmed0.7%Added
Berkshire Hathaway Inc Del(BRK-B)0.6%Added0.7%Trimmed
Abbvie Inc(ABBV)0.7%Added0.6%Trimmed
Lam Research Corp(LRCX)0.5%Added1.1%Trimmed
Tesla Inc(TSLA)0.8%Added0.5%Trimmed
Intel Corp(INTC)0.5%Added0.5%Added
Applied Matls Inc(AMAT)0.5%Trimmed1.7%Trimmed
Merck & Co. Inc(MRK)0.4%Added0.6%Trimmed
Fortinet Inc(FTNT)0.4%Added0.8%Added

and 142 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.

  • Amazon Com Inc(AMZN)Woodline Partners LP trimmed; Acadian Asset Management LLC added
  • Microsoft Corp(MSFT)Woodline Partners LP added; Acadian Asset Management LLC trimmed
  • Alphabet Inc(GOOG)Woodline Partners LP added; Acadian Asset Management LLC trimmed
  • Asml Holding N V(ASML)Woodline Partners LP added; Acadian Asset Management LLC trimmed
  • Pepsico Inc(PEP)Woodline Partners LP trimmed; Acadian Asset Management LLC added
  • Lam Research Corp(LRCX)Woodline Partners LP added; Acadian Asset Management LLC trimmed
  • Colgate Palmolive Co(CL)Woodline Partners LP trimmed; Acadian Asset Management LLC added
  • JPMorgan Chase & Co.(JPM)Woodline Partners LP added; Acadian Asset Management LLC trimmed
  • Bristol Myers Squibb Co(BMY)Woodline Partners LP added; Acadian Asset Management LLC trimmed
  • Lilly Eli & Co(LLY)Woodline Partners LP added; Acadian Asset Management LLC trimmed
  • Berkshire Hathaway Inc Del(BRK-B)Woodline Partners LP added; Acadian Asset Management LLC trimmed
  • Advanced Micro Devices Inc(AMD)Woodline Partners LP trimmed; Acadian Asset Management LLC added
Woodline Partners LP: the recordAcadian Asset Management LLC: the record

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