Boston Partners

Q1 2026 13F-HR Holdings

Location
Boston, MA
Holdings as of
3/31/2026
Date filed
5/11/2026
Form type
13F-HR
Num holdings
767
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 aggregated across other managers listed in the original SEC filing. View detailed breakdown

Prev filing: 2/13/2026 Next filing: — SEC filing

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