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Tudor Investment Corp and Fidelity (FMR LLC): where the books meet

At Q2 2026, at least 12% of the two 13F books was the same, across 125 stocks both listed, against 8.9% 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%10%19%Q2 2013: 8.9%, 116 in bothQ3 2013: 10%, 115 in bothQ4 2013: 13%, 142 in bothQ1 2014: 13%, 166 in both14Q2 2014: 15%, 150 in bothQ3 2014: 15%, 170 in bothQ4 2014: 13%, 150 in bothQ1 2015: 14%, 162 in both15Q2 2015: 15%, 164 in bothQ3 2015: 13%, 154 in bothQ4 2015: 14%, 142 in bothQ1 2016: 11%, 124 in both16Q2 2016: 9.3%, 143 in bothQ3 2016: 13%, 155 in bothQ4 2016: 11%, 153 in bothQ1 2017: 14%, 167 in both17Q2 2017: 18%, 166 in bothQ3 2017: 13%, 168 in bothQ4 2017: 11%, 185 in bothQ1 2018: 12%, 159 in both18Q2 2018: 17%, 178 in bothQ3 2018: 15%, 177 in bothQ4 2018: 7.8%, 147 in bothQ1 2019: 16%, 154 in both19Q2 2019: 15%, 159 in bothQ3 2019: 18%, 160 in bothQ4 2019: 16%, 172 in bothQ1 2020: 18%, 165 in both20Q2 2020: 18%, 178 in bothQ3 2020: 19%, 175 in bothQ4 2020: 16%, 156 in bothQ1 2021: 13%, 143 in both21Q2 2021: 12%, 152 in bothQ3 2021: 13%, 153 in bothQ4 2021: 15%, 166 in bothQ1 2022: 15%, 158 in both22Q2 2022: 14%, 147 in bothQ3 2022: 15%, 152 in bothQ4 2022: 14%, 143 in bothQ1 2023: 14%, 160 in both23Q2 2023: 17%, 149 in bothQ3 2023: 13%, 143 in bothQ4 2023: 12%, 131 in bothQ1 2024: 11%, 118 in both24Q2 2024: 12%, 134 in bothQ3 2024: 7.6%, 106 in bothQ4 2024: 8.9%, 123 in bothQ1 2025: 9.2%, 104 in both25Q2 2025: 5.8%, 87 in bothQ3 2025: 6.2%, 81 in bothQ4 2025: 8.7%, 94 in bothQ1 2026: 10%, 115 in both26Q2 2026: 12%, 125 in both
  • Q2 2013: 8.9%, 116 in both
  • Q3 2013: 10%, 115 in both
  • Q4 2013: 13%, 142 in both
  • Q1 2014: 13%, 166 in both
  • Q2 2014: 15%, 150 in both
  • Q3 2014: 15%, 170 in both
  • Q4 2014: 13%, 150 in both
  • Q1 2015: 14%, 162 in both
  • Q2 2015: 15%, 164 in both
  • Q3 2015: 13%, 154 in both
  • Q4 2015: 14%, 142 in both
  • Q1 2016: 11%, 124 in both
  • Q2 2016: 9.3%, 143 in both
  • Q3 2016: 13%, 155 in both
  • Q4 2016: 11%, 153 in both
  • Q1 2017: 14%, 167 in both
  • Q2 2017: 18%, 166 in both
  • Q3 2017: 13%, 168 in both
  • Q4 2017: 11%, 185 in both
  • Q1 2018: 12%, 159 in both
  • Q2 2018: 17%, 178 in both
  • Q3 2018: 15%, 177 in both
  • Q4 2018: 7.8%, 147 in both
  • Q1 2019: 16%, 154 in both
  • Q2 2019: 15%, 159 in both
  • Q3 2019: 18%, 160 in both
  • Q4 2019: 16%, 172 in both
  • Q1 2020: 18%, 165 in both
  • Q2 2020: 18%, 178 in both
  • Q3 2020: 19%, 175 in both
  • Q4 2020: 16%, 156 in both
  • Q1 2021: 13%, 143 in both
  • Q2 2021: 12%, 152 in both
  • Q3 2021: 13%, 153 in both
  • Q4 2021: 15%, 166 in both
  • Q1 2022: 15%, 158 in both
  • Q2 2022: 14%, 147 in both
  • Q3 2022: 15%, 152 in both
  • Q4 2022: 14%, 143 in both
  • Q1 2023: 14%, 160 in both
  • Q2 2023: 17%, 149 in both
  • Q3 2023: 13%, 143 in both
  • Q4 2023: 12%, 131 in both
  • Q1 2024: 11%, 118 in both
  • Q2 2024: 12%, 134 in both
  • Q3 2024: 7.6%, 106 in both
  • Q4 2024: 8.9%, 123 in both
  • Q1 2025: 9.2%, 104 in both
  • Q2 2025: 5.8%, 87 in both
  • Q3 2025: 6.2%, 81 in both
  • Q4 2025: 8.7%, 94 in both
  • Q1 2026: 10%, 115 in both
  • Q2 2026: 12%, 125 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.

StockTudor Investment CorpFidelity (FMR LLC)
Taiwan Semiconductor Co. Ltd. - ADR(TSM)0.9%Added1.2%Trimmed
Microsoft Corporation(MSFT)0.9%Added3.0%Trimmed
Nvidia Corporation(NVDA)0.7%Added8.9%Added
Micron Technology Incorporated(MU)0.5%Trimmed1.3%Trimmed
Tesla Motors Inc(TSLA)0.4%Added0.7%Added
Amazon.Com Incorporated(AMZN)0.4%Added3.8%Added
Facebook Inc-a(META)0.3%Added2.3%Trimmed
Space Exploration Techn Corp(SPCX)0.3%New2.2%New
NetFlix Inc.(NFLX)0.3%Added0.4%Trimmed
SanDisk Corp(SNDK)0.3%Added0.8%Trimmed
Astera Labs Inc - US(ALAB)0.2%Added0.5%Trimmed
Intel Corporation(INTC)0.2%Added0.6%Added
Wells Fargo Company(WFC)0.2%Added0.5%Trimmed
iShares Core S&P 500 ETF(IVV)1.7%Added0.2%Trimmed
United HealthCare Group(UNH)0.2%Trimmed0.5%Added
Alphabet Inc.(GOOGL)0.2%Trimmed3.9%Added
Oracle Corporation(ORCL)0.3%New0.2%Added
Alphabet Inc. - C Shares(GOOG)0.2%Added1.9%Added
Boeing Company(BA)0.1%New0.6%Added
SPDR S&P 500 ETF Trust(SPY)0.4%Trimmed0.1%Trimmed

and 105 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)Tudor Investment Corp trimmed; Fidelity (FMR LLC) added
  • Alphabet Inc.(GOOGL)Tudor Investment Corp trimmed; Fidelity (FMR LLC) added
  • Microsoft Corporation(MSFT)Tudor Investment Corp added; Fidelity (FMR LLC) trimmed
  • Broadcom Inc(AVGO)Tudor Investment Corp trimmed; Fidelity (FMR LLC) added
  • Facebook Inc-a(META)Tudor Investment Corp added; Fidelity (FMR LLC) trimmed
  • Eli Lilly & Company(LLY)Tudor Investment Corp trimmed; Fidelity (FMR LLC) added
  • Taiwan Semiconductor Co. Ltd. - ADR(TSM)Tudor Investment Corp added; Fidelity (FMR LLC) trimmed
  • SanDisk Corp(SNDK)Tudor Investment Corp added; Fidelity (FMR LLC) trimmed
  • Marvell Technology Inc(MRVL)Tudor Investment Corp added; Fidelity (FMR LLC) trimmed
  • Western Digital Corporation(WDC)Tudor Investment Corp added; Fidelity (FMR LLC) trimmed
  • Advanced Micro Devices Incorporated(AMD)Tudor Investment Corp trimmed; Fidelity (FMR LLC) added
  • Wells Fargo Company(WFC)Tudor Investment Corp added; Fidelity (FMR LLC) trimmed
Tudor Investment Corp: the recordFidelity (FMR LLC): the record

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