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← Citadel Advisors LLC, its record

Citadel Advisors LLC and Neuberger Berman Group LLC: where the books meet

At Q2 2026, at least 7.9% of the two 13F books was the same, across 108 stocks both listed, against 15% at Q4 2015. 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%7%15%Q4 2015: 15%, 121 in bothQ1 2016: 13%, 118 in both16Q2 2016: 11%, 109 in bothQ3 2016: 10%, 107 in bothQ4 2016: 10%, 91 in bothQ1 2017: 12%, 108 in both17Q2 2017: 12%, 113 in bothQ3 2017: 12%, 115 in bothQ4 2017: 12%, 128 in bothQ1 2018: 8.8%, 106 in both18Q2 2018: 9.5%, 108 in bothQ3 2018: 9.9%, 125 in bothQ4 2018: 9.7%, 111 in bothQ1 2019: 10.0%, 119 in both19Q2 2019: 9.5%, 108 in bothQ3 2019: 9.3%, 116 in bothQ4 2019: 9.7%, 117 in bothQ1 2020: 7.5%, 106 in both20Q2 2020: 6.6%, 90 in bothQ3 2020: 5.4%, 88 in bothQ4 2020: 5.7%, 92 in bothQ1 2021: 5.6%, 90 in both21Q2 2021: 4.2%, 70 in bothQ3 2021: 3.6%, 65 in bothQ4 2021: 4.1%, 74 in bothQ1 2022: 3.5%, 67 in both22Q2 2022: 3.6%, 65 in bothQ3 2022: 4.5%, 79 in bothQ4 2022: 5.2%, 90 in bothQ1 2023: 5.3%, 85 in both23Q2 2023: 5.0%, 87 in bothQ3 2023: 5.9%, 84 in bothQ4 2023: 6.1%, 87 in bothQ1 2024: 6.1%, 89 in both24Q2 2024: 5.5%, 81 in bothQ3 2024: 4.6%, 82 in bothQ4 2024: 5.3%, 97 in bothQ1 2025: 4.9%, 86 in both25Q2 2025: 5.9%, 88 in bothQ3 2025: 5.8%, 88 in bothQ4 2025: 7.9%, 104 in bothQ1 2026: 7.9%, 108 in both26Q2 2026: 7.9%, 108 in both
  • Q4 2015: 15%, 121 in both
  • Q1 2016: 13%, 118 in both
  • Q2 2016: 11%, 109 in both
  • Q3 2016: 10%, 107 in both
  • Q4 2016: 10%, 91 in both
  • Q1 2017: 12%, 108 in both
  • Q2 2017: 12%, 113 in both
  • Q3 2017: 12%, 115 in both
  • Q4 2017: 12%, 128 in both
  • Q1 2018: 8.8%, 106 in both
  • Q2 2018: 9.5%, 108 in both
  • Q3 2018: 9.9%, 125 in both
  • Q4 2018: 9.7%, 111 in both
  • Q1 2019: 10.0%, 119 in both
  • Q2 2019: 9.5%, 108 in both
  • Q3 2019: 9.3%, 116 in both
  • Q4 2019: 9.7%, 117 in both
  • Q1 2020: 7.5%, 106 in both
  • Q2 2020: 6.6%, 90 in both
  • Q3 2020: 5.4%, 88 in both
  • Q4 2020: 5.7%, 92 in both
  • Q1 2021: 5.6%, 90 in both
  • Q2 2021: 4.2%, 70 in both
  • Q3 2021: 3.6%, 65 in both
  • Q4 2021: 4.1%, 74 in both
  • Q1 2022: 3.5%, 67 in both
  • Q2 2022: 3.6%, 65 in both
  • Q3 2022: 4.5%, 79 in both
  • Q4 2022: 5.2%, 90 in both
  • Q1 2023: 5.3%, 85 in both
  • Q2 2023: 5.0%, 87 in both
  • Q3 2023: 5.9%, 84 in both
  • Q4 2023: 6.1%, 87 in both
  • Q1 2024: 6.1%, 89 in both
  • Q2 2024: 5.5%, 81 in both
  • Q3 2024: 4.6%, 82 in both
  • Q4 2024: 5.3%, 97 in both
  • Q1 2025: 4.9%, 86 in both
  • Q2 2025: 5.9%, 88 in both
  • Q3 2025: 5.8%, 88 in both
  • Q4 2025: 7.9%, 104 in both
  • Q1 2026: 7.9%, 108 in both
  • Q2 2026: 7.9%, 108 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.

StockCitadel Advisors LLCNeuberger Berman Group LLC
iShares Trust(IVV)1.5%Added1.3%Added
Amazon Com Inc(AMZN)0.3%Added3.1%Added
Nvidia Corp(NVDA)0.3%Trimmed4.1%Added
Apple Inc(AAPL)0.2%Added3.3%Added
Microsoft Corp(MSFT)0.2%Added2.6%Trimmed
Warner Bros. Discovery Inc Series A(WBD)0.1%Added0.1%Added
Lilly Eli & Co(LLY)0.1%Added1.4%Trimmed
Broadcom Inc(AVGO)0.1%Trimmed1.0%Trimmed
Alphabet Inc(GOOGL)0.1%Added2.4%Added
09290d101(BLK)0.1%Added0.2%Trimmed
Electronic Arts Inc(EA)0.1%Added0.1%Added
Advanced Micro Devices Inc(AMD)0.1%Added0.6%Trimmed
Alphabet Inc(GOOG)0.1%Added2.1%Added
84615q103(SPCX)0.1%New0.2%New
Abbvie Inc(ABBV)under 0.1%Added0.2%Added
Applied Matls Inc(AMAT)under 0.1%Trimmed0.6%Added
Abbott Labs(ABT)under 0.1%Added0.2%Trimmed
482480100(KLAC)under 0.1%Added0.1%Added
Mastercard Inc(MA)under 0.1%Added0.4%Trimmed
G7997r103(STX)under 0.1%Added0.1%Added

and 88 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.

  • Nvidia Corp(NVDA)Citadel Advisors LLC trimmed; Neuberger Berman Group LLC added
  • Microsoft Corp(MSFT)Citadel Advisors LLC added; Neuberger Berman Group LLC trimmed
  • JPMorgan Chase & Co(JPM)Citadel Advisors LLC trimmed; Neuberger Berman Group LLC added
  • Lilly Eli & Co(LLY)Citadel Advisors LLC added; Neuberger Berman Group LLC trimmed
  • ***asml Holding N V(ASML)Citadel Advisors LLC trimmed; Neuberger Berman Group LLC added
  • Facebook Inc(META)Citadel Advisors LLC trimmed; Neuberger Berman Group LLC added
  • Home Depot Inc(HD)Citadel Advisors LLC added; Neuberger Berman Group LLC trimmed
  • 09290d101(BLK)Citadel Advisors LLC added; Neuberger Berman Group LLC trimmed
  • Johnson & Johnson(JNJ)Citadel Advisors LLC trimmed; Neuberger Berman Group LLC added
  • Visa Inc(V)Citadel Advisors LLC added; Neuberger Berman Group LLC trimmed
  • Berkshire Hathaway Inc Del(BRK-B)Citadel Advisors LLC trimmed; Neuberger Berman Group LLC added
  • Advanced Micro Devices Inc(AMD)Citadel Advisors LLC added; Neuberger Berman Group LLC trimmed
Citadel Advisors LLC: the recordNeuberger Berman Group LLC: the record

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