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← Acadian Asset Management LLC, its record

Acadian Asset Management LLC and Man Group PLC: where the books meet

At Q2 2026, at least 41% of the two 13F books was the same, across 220 stocks both listed, against 20% at Q1 2018. 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%21%42%Q1 2018: 20%, 187 in both18Q2 2018: 22%, 194 in bothQ3 2018: 24%, 190 in bothQ4 2018: 23%, 192 in bothQ1 2019: 23%, 205 in both19Q2 2019: 22%, 189 in bothQ3 2019: 26%, 198 in bothQ4 2019: 24%, 168 in bothQ1 2020: 30%, 168 in both20Q2 2020: 35%, 181 in bothQ3 2020: 34%, 179 in bothQ4 2020: 30%, 183 in bothQ1 2021: 31%, 180 in both21Q2 2021: 30%, 182 in bothQ3 2021: 28%, 184 in bothQ4 2021: 30%, 186 in bothQ1 2022: 30%, 196 in both22Q2 2022: 26%, 187 in bothQ3 2022: 28%, 187 in bothQ4 2022: 33%, 215 in bothQ1 2023: 30%, 197 in both23Q2 2023: 32%, 190 in bothQ3 2023: 31%, 185 in bothQ4 2023: 29%, 181 in bothQ1 2024: 28%, 177 in both24Q2 2024: 32%, 194 in bothQ3 2024: 29%, 186 in bothQ4 2024: 30%, 178 in bothQ1 2025: 31%, 187 in both25Q2 2025: 39%, 211 in bothQ3 2025: 41%, 221 in bothQ4 2025: 42%, 212 in bothQ1 2026: 41%, 231 in both26Q2 2026: 41%, 220 in both
  • Q1 2018: 20%, 187 in both
  • Q2 2018: 22%, 194 in both
  • Q3 2018: 24%, 190 in both
  • Q4 2018: 23%, 192 in both
  • Q1 2019: 23%, 205 in both
  • Q2 2019: 22%, 189 in both
  • Q3 2019: 26%, 198 in both
  • Q4 2019: 24%, 168 in both
  • Q1 2020: 30%, 168 in both
  • Q2 2020: 35%, 181 in both
  • Q3 2020: 34%, 179 in both
  • Q4 2020: 30%, 183 in both
  • Q1 2021: 31%, 180 in both
  • Q2 2021: 30%, 182 in both
  • Q3 2021: 28%, 184 in both
  • Q4 2021: 30%, 186 in both
  • Q1 2022: 30%, 196 in both
  • Q2 2022: 26%, 187 in both
  • Q3 2022: 28%, 187 in both
  • Q4 2022: 33%, 215 in both
  • Q1 2023: 30%, 197 in both
  • Q2 2023: 32%, 190 in both
  • Q3 2023: 31%, 185 in both
  • Q4 2023: 29%, 181 in both
  • Q1 2024: 28%, 177 in both
  • Q2 2024: 32%, 194 in both
  • Q3 2024: 29%, 186 in both
  • Q4 2024: 30%, 178 in both
  • Q1 2025: 31%, 187 in both
  • Q2 2025: 39%, 211 in both
  • Q3 2025: 41%, 221 in both
  • Q4 2025: 42%, 212 in both
  • Q1 2026: 41%, 231 in both
  • Q2 2026: 41%, 220 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.

StockAcadian Asset Management LLCMan Group PLC
Nvidia Corp(NVDA)4.6%Added3.5%Added
Apple Inc(AAPL)5.5%Added3.0%Added
Amazon Com Inc(AMZN)2.4%Added1.7%Added
Microsoft Corp(MSFT)2.1%Trimmed1.6%Trimmed
Alphabet Inc(GOOGL)2.6%Trimmed1.4%Trimmed
Broadcom LTD(AVGO)1.3%Added1.3%Trimmed
Micron Technology Inc(MU)1.6%Trimmed0.9%Trimmed
Alphabet Inc(GOOG)1.2%Trimmed0.8%Trimmed
Facebook Inc(META)1.3%Added0.8%Trimmed
Eli Lilly & Co(LLY)0.7%Trimmed0.8%Trimmed
Advanced Micro Devices Inc(AMD)0.7%Added0.7%Trimmed
Costco WHSL Corp New(COST)1.3%Added0.7%Added
Citigroup Inc(C)1.0%Added0.6%Added
JP Morgan Chase &(JPM)0.9%Trimmed0.6%Trimmed
Abbvie Inc(ABBV)0.6%Trimmed0.7%Trimmed
Lam Research Corp(LRCX)1.1%Trimmed0.5%Trimmed
Pepsico Inc(PEP)1.1%Added0.5%Added
Applied Matls Inc(AMAT)1.7%Trimmed0.5%Trimmed
Bank of America Corporation(BAC)0.5%Trimmed0.5%Added
Tesla MTRS Inc(TSLA)0.5%Trimmed0.4%Trimmed

and 200 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.

  • Facebook Inc(META)Acadian Asset Management LLC added; Man Group PLC trimmed
  • Broadcom LTD(AVGO)Acadian Asset Management LLC added; Man Group PLC trimmed
  • Cisco Sys Inc(CSCO)Acadian Asset Management LLC added; Man Group PLC trimmed
  • Berkshire Hathaway Inc Del(BRK-B)Acadian Asset Management LLC trimmed; Man Group PLC added
  • Advanced Micro Devices Inc(AMD)Acadian Asset Management LLC added; Man Group PLC trimmed
  • Suncor Energy Inc New(SU)Acadian Asset Management LLC trimmed; Man Group PLC added
  • Merck & Co Inc New(MRK)Acadian Asset Management LLC trimmed; Man Group PLC added
  • G7997r103(STX)Acadian Asset Management LLC trimmed; Man Group PLC added
  • Bank of America Corporation(BAC)Acadian Asset Management LLC trimmed; Man Group PLC added
  • G0593m107(AZN)Acadian Asset Management LLC trimmed; Man Group PLC added
  • Royal BK Cda Montreal Que(RY)Acadian Asset Management LLC added; Man Group PLC trimmed
  • Exxon Mobil Corp(XOM)Acadian Asset Management LLC trimmed; Man Group PLC added
Acadian Asset Management LLC: the recordMan Group PLC: the record

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