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← Two Sigma Investments LP, its record

Two Sigma Investments LP and Acadian Asset Management LLC: where the books meet

At Q2 2026, at least 24% of the two 13F books was the same, across 164 stocks both listed, against 0.0% 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%13%27%Q2 2013: 0.0%, 0 in bothQ3 2013: 11%, 93 in bothQ4 2013: 13%, 96 in bothQ1 2014: 11%, 84 in both14Q2 2014: 14%, 111 in bothQ3 2014: 16%, 105 in bothQ4 2014: 12%, 99 in bothQ1 2015: 12%, 86 in both15Q2 2015: 11%, 99 in bothQ3 2015: 12%, 96 in bothQ4 2015: 12%, 95 in bothQ1 2016: 11%, 92 in both16Q2 2016: 11%, 91 in bothQ3 2016: 13%, 104 in bothQ4 2016: 9.7%, 95 in bothQ1 2017: 12%, 101 in both17Q2 2017: 15%, 125 in bothQ3 2017: 16%, 127 in bothQ4 2017: 12%, 119 in bothQ1 2018: 14%, 118 in both18Q2 2018: 15%, 119 in bothQ3 2018: 17%, 129 in bothQ4 2018: 12%, 114 in bothQ1 2019: 13%, 121 in both19Q2 2019: 11%, 92 in bothQ3 2019: 15%, 117 in bothQ4 2019: 12%, 99 in bothQ1 2020: 13%, 93 in both20Q2 2020: 20%, 126 in bothQ3 2020: 20%, 121 in bothQ4 2020: 18%, 126 in bothQ1 2021: 14%, 99 in both21Q2 2021: 14%, 103 in bothQ3 2021: 17%, 126 in bothQ4 2021: 16%, 122 in bothQ1 2022: 16%, 123 in both22Q2 2022: 19%, 135 in bothQ3 2022: 21%, 134 in bothQ4 2022: 19%, 145 in bothQ1 2023: 17%, 134 in both23Q2 2023: 16%, 138 in bothQ3 2023: 20%, 143 in bothQ4 2023: 18%, 147 in bothQ1 2024: 18%, 137 in both24Q2 2024: 18%, 150 in bothQ3 2024: 17%, 135 in bothQ4 2024: 18%, 133 in bothQ1 2025: 19%, 138 in both25Q2 2025: 22%, 155 in bothQ3 2025: 20%, 155 in bothQ4 2025: 18%, 145 in bothQ1 2026: 27%, 177 in both26Q2 2026: 24%, 164 in both
  • Q2 2013: 0.0%, 0 in both
  • Q3 2013: 11%, 93 in both
  • Q4 2013: 13%, 96 in both
  • Q1 2014: 11%, 84 in both
  • Q2 2014: 14%, 111 in both
  • Q3 2014: 16%, 105 in both
  • Q4 2014: 12%, 99 in both
  • Q1 2015: 12%, 86 in both
  • Q2 2015: 11%, 99 in both
  • Q3 2015: 12%, 96 in both
  • Q4 2015: 12%, 95 in both
  • Q1 2016: 11%, 92 in both
  • Q2 2016: 11%, 91 in both
  • Q3 2016: 13%, 104 in both
  • Q4 2016: 9.7%, 95 in both
  • Q1 2017: 12%, 101 in both
  • Q2 2017: 15%, 125 in both
  • Q3 2017: 16%, 127 in both
  • Q4 2017: 12%, 119 in both
  • Q1 2018: 14%, 118 in both
  • Q2 2018: 15%, 119 in both
  • Q3 2018: 17%, 129 in both
  • Q4 2018: 12%, 114 in both
  • Q1 2019: 13%, 121 in both
  • Q2 2019: 11%, 92 in both
  • Q3 2019: 15%, 117 in both
  • Q4 2019: 12%, 99 in both
  • Q1 2020: 13%, 93 in both
  • Q2 2020: 20%, 126 in both
  • Q3 2020: 20%, 121 in both
  • Q4 2020: 18%, 126 in both
  • Q1 2021: 14%, 99 in both
  • Q2 2021: 14%, 103 in both
  • Q3 2021: 17%, 126 in both
  • Q4 2021: 16%, 122 in both
  • Q1 2022: 16%, 123 in both
  • Q2 2022: 19%, 135 in both
  • Q3 2022: 21%, 134 in both
  • Q4 2022: 19%, 145 in both
  • Q1 2023: 17%, 134 in both
  • Q2 2023: 16%, 138 in both
  • Q3 2023: 20%, 143 in both
  • Q4 2023: 18%, 147 in both
  • Q1 2024: 18%, 137 in both
  • Q2 2024: 18%, 150 in both
  • Q3 2024: 17%, 135 in both
  • Q4 2024: 18%, 133 in both
  • Q1 2025: 19%, 138 in both
  • Q2 2025: 22%, 155 in both
  • Q3 2025: 20%, 155 in both
  • Q4 2025: 18%, 145 in both
  • Q1 2026: 27%, 177 in both
  • Q2 2026: 24%, 164 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.

StockTwo Sigma Investments LPAcadian Asset Management LLC
Amazon Com Inc(AMZN)1.0%Trimmed2.4%Added
Nvidia Corp(NVDA)0.9%Trimmed4.6%Added
Apple Inc(AAPL)0.9%Trimmed5.5%Added
Berkshire Hathaway Inc Del(BRK-B)0.8%Added0.7%Trimmed
JPMorgan Chase & Co(JPM)0.7%Trimmed0.9%Trimmed
Costco WHSL Corp New(COST)0.7%Added1.3%Added
Asml Holding N V(ASML)0.7%Added1.2%Trimmed
Advanced Micro Devices Inc(AMD)0.6%Added0.7%Added
Citigroup Inc(C)0.6%Added1.0%Added
Alphabet Inc(GOOGL)0.6%Trimmed2.6%Trimmed
TJX Cos Inc New(TJX)0.5%Trimmed0.8%Added
Microsoft Corp(MSFT)0.5%Added2.1%Trimmed
Tesla MTRS Inc(TSLA)0.9%Trimmed0.5%Trimmed
Micron Technology Inc(MU)0.4%Trimmed1.6%Trimmed
Bristol Myers Squibb Co(BMY)0.4%Trimmed0.8%Trimmed
Goldman Sachs Group Inc(GS)0.6%Added0.4%Trimmed
Ross Stores Inc(ROST)0.4%Trimmed0.5%Added
Airbnb Inc(ABNB)0.4%Added1.0%Added
SanDisk Corp(SNDK)0.4%Trimmed0.4%Added
Morgan Stanley(MS)0.5%Trimmed0.3%Trimmed

and 144 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.

  • Apple Inc(AAPL)Two Sigma Investments LP trimmed; Acadian Asset Management LLC added
  • Nvidia Corp(NVDA)Two Sigma Investments LP trimmed; Acadian Asset Management LLC added
  • Amazon Com Inc(AMZN)Two Sigma Investments LP trimmed; Acadian Asset Management LLC added
  • Microsoft Corp(MSFT)Two Sigma Investments LP added; Acadian Asset Management LLC trimmed
  • Berkshire Hathaway Inc Del(BRK-B)Two Sigma Investments LP added; Acadian Asset Management LLC trimmed
  • Facebook Inc(META)Two Sigma Investments LP trimmed; Acadian Asset Management LLC added
  • Broadcom Inc(AVGO)Two Sigma Investments LP trimmed; Acadian Asset Management LLC added
  • Asml Holding N V(ASML)Two Sigma Investments LP added; Acadian Asset Management LLC trimmed
  • Boston Scientific Corp(BSX)Two Sigma Investments LP added; Acadian Asset Management LLC trimmed
  • Lockheed Martin Corp(LMT)Two Sigma Investments LP added; Acadian Asset Management LLC trimmed
  • Intuitive Surgical Inc(ISRG)Two Sigma Investments LP added; Acadian Asset Management LLC trimmed
  • Schwab Charles Corp New(SCHW)Two Sigma Investments LP added; Acadian Asset Management LLC trimmed
Two Sigma Investments LP: the recordAcadian Asset Management LLC: the record

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