Arrowstreet Capital LP and Fidelity (FMR LLC): where the books meet

At Q2 2026, at least 40% of the two 13F books was the same, across 212 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

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.

Stock	Arrowstreet Capital LP	Fidelity (FMR LLC)
Apple Inc(AAPL)	3.8%Added	4.1%Added
Amazon Com Inc(AMZN)	4.3%Added	3.8%Added
Nvidia Corp(NVDA)	3.1%Added	8.9%Added
Microsoft Corp(MSFT)	4.6%Added	3.0%Trimmed
Alphabet Inc(GOOGL)	2.4%Trimmed	3.9%Added
Alphabet Inc(GOOG)	2.2%Trimmed	1.9%Added
Broadcom Inc(AVGO)	1.4%Trimmed	2.4%Added
SanDisk Corp(SNDK)	2.2%Trimmed	0.8%Trimmed
Lam Research Corp(LRCX)	2.4%Trimmed	0.6%Added
Taiwan Semiconductor MFG LTD(TSM)	0.6%Added	1.2%Trimmed
Kla-tencor Corp(KLAC)	0.6%Added	0.6%Added
Amphenol Corp New(APH)	0.9%Added	0.5%Trimmed
Mastercard Incorporated(MA)	1.0%Added	0.5%Trimmed
Unitedhealth Group Inc(UNH)	0.6%Trimmed	0.5%Added
Asml Holding N V(ASML)	1.3%Trimmed	0.5%Added
Bank Amer Corp(BAC)	0.4%Added	0.5%Trimmed
Cisco Sys Inc(CSCO)	1.0%Added	0.4%Added
Wells Fargo & Co New(WFC)	0.4%Added	0.5%Trimmed
Ciena Corp(CIEN)	0.4%Added	0.4%Trimmed
Arista Networks Inc(ANET)	0.6%Trimmed	0.3%Trimmed

and 192 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.

Alphabet Inc(GOOGL)Arrowstreet Capital LP trimmed; Fidelity (FMR LLC) added
Microsoft Corp(MSFT)Arrowstreet Capital LP added; Fidelity (FMR LLC) trimmed
Broadcom Inc(AVGO)Arrowstreet Capital LP trimmed; Fidelity (FMR LLC) added
Alphabet Inc(GOOG)Arrowstreet Capital LP trimmed; Fidelity (FMR LLC) added
Lilly Eli & Co(LLY)Arrowstreet Capital LP trimmed; Fidelity (FMR LLC) added
Taiwan Semiconductor MFG LTD(TSM)Arrowstreet Capital LP added; Fidelity (FMR LLC) trimmed
Western Digital Corp(WDC)Arrowstreet Capital LP started; Fidelity (FMR LLC) trimmed
Lam Research Corp(LRCX)Arrowstreet Capital LP trimmed; Fidelity (FMR LLC) added
Wells Fargo & Co New(WFC)Arrowstreet Capital LP added; Fidelity (FMR LLC) trimmed
Amphenol Corp New(APH)Arrowstreet Capital LP added; Fidelity (FMR LLC) trimmed
Mastercard Incorporated(MA)Arrowstreet Capital LP added; Fidelity (FMR LLC) trimmed
Unitedhealth Group Inc(UNH)Arrowstreet Capital LP trimmed; Fidelity (FMR LLC) added

Arrowstreet Capital LP: the record Fidelity (FMR LLC): the record

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