Boston Partners

Q1 2026 13F-HR Detailed Holdings

Location
Boston, MA
Holdings as of
3/31/2026
Date filed
5/11/2026
Form type
13F-HR
Num holdings
1,772
Total value ($000)
$95,466,693
Net value change ($000)
-1,116,056 (-1.2%)
New positions
108
Sold out positions
92
Turnover %
7.1%
Sector allocation + QoQ delta (equities-only)

Holdings broken out by other managers reported in the original SEC filing. View aggregated holdings

You are on the SEC detailed breakdown page. Rows are shown as reported in the filing (including other manager, discretion, and voting authority fields), and are not merged like the standard holdings view. Switch to aggregated holdings.

Snapshot: Change Analysis

Compared to Q4 2025
Methodology: sector metrics are equities-only; instrument mix chart is ex-options; options exposure is shown separately. Why this matters.
Top Adds (Value $000, Stocks/ETFs)
MRVL 612,571 NEW
AZN 413,447 NEW
V 412,116 258.4%
MPC 380,967 38.2%
SLB 364,719 112.4%
FANG 301,278 35.9%
NVDA 291,670 31841.7%
USFD 287,860 23.5%
COP 273,705 44.2%
MUSA 228,147 613.1%
Top Reduces (Value $000, Stocks/ETFs)
UNH -549,503 -89.9%
MDT -471,431 -72.8%
AZN -389,450 -100.0%
AZO -343,580 -42.7%
CG -327,160 -100.0%
LULU -304,875 -100.0%
NVO -270,239 -98.1%
SSNC -258,173 -68.9%
JPM -251,473 -10.8%
EMR -244,557 -100.0%
Instrument mix + QoQ Δ (ex-options)
How this table is calculated: SEC VALUE ($000) is used as reported. For derivatives (PUT/CALL/WARRANT/RIGHT), SEC value represents reported underlying exposure, not premium cash paid/received. Column % is bucket-based: non-options share is calculated inside non-option total, options share is calculated inside options total. Details.
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Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type Discretion Other Manager Sole Shared None

Other Managers

Num Name File Number
1 ORIX Corp Europe N.V. 028-12637
2 Robeco Institutional Asset Management B.V. 028-12635
3 Boston Partners Trust Co 028-13904
4 ORIX CORP 028-18337