Boston Partners

CIK 0001386060 · BOSTON, MA · Quarter end: 2026-06-30 · Filed on: 2026-08-04 · Open the SEC source

Boston Partners reported 802 positions worth $112.57B as of June 30, 2026 (13F filed August 4, 2026). Largest holding: AMZN (2.7%).

Portfolio Value (AUM)Total value of the fund's US stock portfolio reported to the SEC.
$112.57B
2026 Q2
Positions
802
Top-10 ConcentrationHow much of the portfolio sits in the 10 largest holdings. High = concentrated bets.
15.5%
Est. Net Flow (Q)
2026 Q2
10 / 802 positions shown
#SymbolCompanyTypeValue% Port.Shares1YYTD
1AMZNAMAZON COM INCSH$3.07B2.73%12,862,015
2JPMJPMORGAN CHASE & COSH$2.42B2.15%7,360,355
3USFDUS FOODS HLDG CORPSH$1.90B1.69%18,606,610
4AMATAPPLIED MATLS INCSH$1.89B1.68%2,636,446
5FLEXFLEX LTDSH$1.38B1.23%8,615,342
6CORCENCORA INCSH$1.38B1.23%4,868,782
7CRHCRH PLCSH$1.38B1.23%12,915,788
8MUMICRON TECHNOLOGY INCSH$1.38B1.22%1,202,381
9DELLDELL TECHNOLOGIES INCSH$1.37B1.22%3,172,196
10MCHPMICROCHIP TECHNOLOGY INC.SH$1.32B1.17%14,522,587

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Read the 2026-Q2 quarterly report · 13F Filing Calendar

Frequently Asked Questions

What stocks does Boston Partners hold as of Q2 2026?

Boston Partners reported 802 positions worth $112.57B in its Q2 2026 13F filing. Largest positions: AMZN (2.7%), JPM (2.1%), USFD (1.7%), AMAT (1.7%) and FLEX (1.2%).

What did Boston Partners buy in Q2 2026?

No previous quarter is available yet; the comparison appears with the next filing.

What did Boston Partners sell in Q2 2026?

No previous quarter is available yet.

13F data shows quarter-end positions, is delayed by up to 45 days and covers only long positions in US-listed securities; short positions, most derivatives and non-US assets are not reported.