Arrowstreet Capital LP and T. Rowe Price Associates Inc: where the books meet

At Q2 2026, at least 43% of the two 13F books was the same, across 219 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	T. Rowe Price Associates Inc
Apple Inc(AAPL)	3.8%Added	4.6%Trimmed
Microsoft Corp(MSFT)	4.6%Added	3.3%Trimmed
Nvidia Corp(NVDA)	3.1%Added	7.4%Trimmed
Amazon Com Inc(AMZN)	4.3%Added	2.6%Trimmed
Alphabet Inc(GOOGL)	2.4%Trimmed	3.6%Added
Alphabet Inc(GOOG)	2.2%Trimmed	2.1%Trimmed
Broadcom Inc(AVGO)	1.4%Trimmed	3.1%Trimmed
Lam Research Corp(LRCX)	2.4%Trimmed	1.1%Added
Mastercard Incorporated(MA)	1.0%Added	1.0%Trimmed
Amphenol Corp New(APH)	0.9%Added	0.6%Added
Unitedhealth Group Inc(UNH)	0.6%Trimmed	1.0%Added
Taiwan Semiconductor MFG LTD(TSM)	0.6%Added	0.5%Added
Kla-tencor Corp(KLAC)	0.6%Added	0.5%Added
Cisco Sys Inc(CSCO)	1.0%Added	0.5%Trimmed
Intuitive Surgical Inc(ISRG)	0.7%Added	0.4%Trimmed
T Mobile US Inc(TMUS)	0.4%Added	0.4%Trimmed
Linde PLC(LIN)	0.4%Added	0.6%Added
Bank Amer Corp(BAC)	0.4%Added	0.5%Trimmed
Booking HLDGS Inc(BKNG)	0.4%Added	0.5%Added
Arista Networks Inc(ANET)	0.6%Trimmed	0.4%Trimmed

and 199 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)Arrowstreet Capital LP added; T. Rowe Price Associates Inc trimmed
Apple Inc(AAPL)Arrowstreet Capital LP added; T. Rowe Price Associates Inc trimmed
Alphabet Inc(GOOGL)Arrowstreet Capital LP trimmed; T. Rowe Price Associates Inc added
Microsoft Corp(MSFT)Arrowstreet Capital LP added; T. Rowe Price Associates Inc trimmed
Amazon Com Inc(AMZN)Arrowstreet Capital LP added; T. Rowe Price Associates Inc trimmed
Micron Technology Inc(MU)Arrowstreet Capital LP trimmed; T. Rowe Price Associates Inc added
Lam Research Corp(LRCX)Arrowstreet Capital LP trimmed; T. Rowe Price Associates Inc added
Unitedhealth Group Inc(UNH)Arrowstreet Capital LP trimmed; T. Rowe Price Associates Inc added
Mastercard Incorporated(MA)Arrowstreet Capital LP added; T. Rowe Price Associates Inc trimmed
Netflix Inc(NFLX)Arrowstreet Capital LP added; T. Rowe Price Associates Inc trimmed
Chubb Limited(CB)Arrowstreet Capital LP added; T. Rowe Price Associates Inc trimmed
Cisco Sys Inc(CSCO)Arrowstreet Capital LP added; T. Rowe Price Associates Inc trimmed

Arrowstreet Capital LP: the record T. Rowe Price Associates Inc: the record

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