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← Tudor Investment Corp, its record

Tudor Investment Corp and AllianceBernstein LP: where the books meet

At Q2 2026, at least 11% of the two 13F books was the same, across 119 stocks both listed, against 11% 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%9%18%Q2 2013: 11%, 146 in bothQ3 2013: 12%, 147 in bothQ4 2013: 14%, 155 in bothQ1 2014: 15%, 179 in both14Q2 2014: 13%, 167 in bothQ3 2014: 13%, 165 in bothQ4 2014: 15%, 162 in bothQ1 2015: 16%, 179 in both15Q2 2015: 13%, 167 in bothQ3 2015: 12%, 156 in bothQ4 2015: 12%, 142 in bothQ1 2016: 10%, 126 in both16Q2 2016: 9.5%, 143 in bothQ3 2016: 15%, 165 in bothQ4 2016: 12%, 169 in bothQ1 2017: 15%, 168 in both17Q2 2017: 16%, 172 in bothQ3 2017: 13%, 155 in bothQ4 2017: 11%, 166 in bothQ1 2018: 14%, 157 in both18Q2 2018: 18%, 172 in bothQ3 2018: 16%, 157 in bothQ4 2018: 7.1%, 137 in bothQ1 2019: 16%, 148 in both19Q2 2019: 15%, 166 in bothQ3 2019: 18%, 156 in bothQ4 2019: 17%, 161 in bothQ1 2020: 18%, 178 in both20Q2 2020: 18%, 175 in bothQ3 2020: 18%, 177 in bothQ4 2020: 16%, 158 in bothQ1 2021: 14%, 152 in both21Q2 2021: 12%, 140 in bothQ3 2021: 12%, 139 in bothQ4 2021: 15%, 156 in bothQ1 2022: 13%, 144 in both22Q2 2022: 13%, 140 in bothQ3 2022: 15%, 141 in bothQ4 2022: 14%, 140 in bothQ1 2023: 14%, 150 in both23Q2 2023: 16%, 136 in bothQ3 2023: 12%, 128 in bothQ4 2023: 11%, 112 in bothQ1 2024: 11%, 124 in both24Q2 2024: 11%, 127 in bothQ3 2024: 8.0%, 105 in bothQ4 2024: 9.8%, 133 in bothQ1 2025: 8.7%, 109 in both25Q2 2025: 6.0%, 90 in bothQ3 2025: 6.3%, 91 in bothQ4 2025: 11%, 114 in bothQ1 2026: 9.8%, 115 in both26Q2 2026: 11%, 119 in both
  • Q2 2013: 11%, 146 in both
  • Q3 2013: 12%, 147 in both
  • Q4 2013: 14%, 155 in both
  • Q1 2014: 15%, 179 in both
  • Q2 2014: 13%, 167 in both
  • Q3 2014: 13%, 165 in both
  • Q4 2014: 15%, 162 in both
  • Q1 2015: 16%, 179 in both
  • Q2 2015: 13%, 167 in both
  • Q3 2015: 12%, 156 in both
  • Q4 2015: 12%, 142 in both
  • Q1 2016: 10%, 126 in both
  • Q2 2016: 9.5%, 143 in both
  • Q3 2016: 15%, 165 in both
  • Q4 2016: 12%, 169 in both
  • Q1 2017: 15%, 168 in both
  • Q2 2017: 16%, 172 in both
  • Q3 2017: 13%, 155 in both
  • Q4 2017: 11%, 166 in both
  • Q1 2018: 14%, 157 in both
  • Q2 2018: 18%, 172 in both
  • Q3 2018: 16%, 157 in both
  • Q4 2018: 7.1%, 137 in both
  • Q1 2019: 16%, 148 in both
  • Q2 2019: 15%, 166 in both
  • Q3 2019: 18%, 156 in both
  • Q4 2019: 17%, 161 in both
  • Q1 2020: 18%, 178 in both
  • Q2 2020: 18%, 175 in both
  • Q3 2020: 18%, 177 in both
  • Q4 2020: 16%, 158 in both
  • Q1 2021: 14%, 152 in both
  • Q2 2021: 12%, 140 in both
  • Q3 2021: 12%, 139 in both
  • Q4 2021: 15%, 156 in both
  • Q1 2022: 13%, 144 in both
  • Q2 2022: 13%, 140 in both
  • Q3 2022: 15%, 141 in both
  • Q4 2022: 14%, 140 in both
  • Q1 2023: 14%, 150 in both
  • Q2 2023: 16%, 136 in both
  • Q3 2023: 12%, 128 in both
  • Q4 2023: 11%, 112 in both
  • Q1 2024: 11%, 124 in both
  • Q2 2024: 11%, 127 in both
  • Q3 2024: 8.0%, 105 in both
  • Q4 2024: 9.8%, 133 in both
  • Q1 2025: 8.7%, 109 in both
  • Q2 2025: 6.0%, 90 in both
  • Q3 2025: 6.3%, 91 in both
  • Q4 2025: 11%, 114 in both
  • Q1 2026: 9.8%, 115 in both
  • Q2 2026: 11%, 119 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 CorpAllianceBernstein LP
iShares Core S&P 500 ETF(IVV)1.7%Added1.2%Added
Microsoft Corporation(MSFT)0.9%Added3.2%Trimmed
Taiwan Semiconductor Co. Ltd. - ADR(TSM)0.9%Added0.8%Trimmed
Nvidia Corporation(NVDA)0.7%Added5.6%Trimmed
Tesla Motors Inc(TSLA)0.4%Added0.4%Added
Amazon.Com Incorporated(AMZN)0.4%Added2.6%Trimmed
Micron Technology Incorporated(MU)0.5%Trimmed0.4%Added
Facebook Inc-a(META)0.3%Added2.3%Trimmed
NetFlix Inc.(NFLX)0.3%Added1.1%Trimmed
Oracle Corporation(ORCL)0.3%New0.2%Added
Wells Fargo Company(WFC)0.2%Added0.3%Added
United HealthCare Group(UNH)0.2%Trimmed0.7%Added
Alphabet Inc.(GOOGL)0.2%Trimmed1.1%Added
Intel Corporation(INTC)0.2%Added0.2%Added
SPDR S&P 500 ETF Trust(SPY)0.4%Trimmed0.2%Added
Alphabet Inc. - C Shares(GOOG)0.2%Added3.5%Trimmed
McKesson Corporation(MCK)0.1%Added0.5%Trimmed
Palantir Technologies Inc-a(PLTR)0.2%Added0.1%Trimmed
Texas Instruments Incorporated(TXN)0.1%New0.6%Added
Advanced Micro Devices Incorporated(AMD)0.1%Trimmed0.4%Added

and 99 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 Corporation(NVDA)Tudor Investment Corp added; AllianceBernstein LP trimmed
  • Apple Inc(AAPL)Tudor Investment Corp trimmed; AllianceBernstein LP added
  • Alphabet Inc. - C Shares(GOOG)Tudor Investment Corp added; AllianceBernstein LP trimmed
  • Microsoft Corporation(MSFT)Tudor Investment Corp added; AllianceBernstein LP trimmed
  • Amazon.Com Incorporated(AMZN)Tudor Investment Corp added; AllianceBernstein LP trimmed
  • Facebook Inc-a(META)Tudor Investment Corp added; AllianceBernstein LP trimmed
  • Alphabet Inc.(GOOGL)Tudor Investment Corp trimmed; AllianceBernstein LP added
  • NetFlix Inc.(NFLX)Tudor Investment Corp added; AllianceBernstein LP trimmed
  • Taiwan Semiconductor Co. Ltd. - ADR(TSM)Tudor Investment Corp added; AllianceBernstein LP trimmed
  • United HealthCare Group(UNH)Tudor Investment Corp trimmed; AllianceBernstein LP added
  • Raytheon Technologies Corp(RTX)Tudor Investment Corp trimmed; AllianceBernstein LP added
  • iShares Core S&P Total Us Stock Market Etf - US ET(ITOT)Tudor Investment Corp sold out; AllianceBernstein LP added
Tudor Investment Corp: the recordAllianceBernstein LP: the record

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