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Boston Partners

Registered adviser
Location
BOSTON, MA
Portfolio Value
Mega $112,019,051,609
Diversification
Diversified
Reports for
ORIX Corp Europe N.V. Robeco Institutional Asset Management B.V. Boston Partners Trust Co ORIX CORP
Filing Date
Global Rank
#90 / 8,807 ▼ 4
Top Industry
Semiconductors 4.9%
Period ended 4 months ago
Filed Aug 4, 2026 · 3mo
26 quarters · since Mar 2020

Regulatory profile

From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.

Holder type
Registered adviser
Form ADV roster, Oct 1, 2026
Form ADV adviser
CRD 124982
Roster of Oct 1, 2026
Regulatory AUM
$116,165,718,248
Main clients
Registered funds and BDCs (50% of AUM)
Private funds
4 funds · Hedge funds
Focus by gross assets, Schedule D of Nov 5, 2024
$584,493,630 gross assets
LEI
1J20BQ2FEQG1ONZV3K54
Private funds on Schedule D 7.B.(1)
As filed Nov 5, 2024; SEC's bulk Form ADV archive ends with 2024 filings.
$340,362,241 gross assets in 4 funds Hedge funds $171,812,836 (2) Other private funds $168,549,405 (2)
Form ADV history
Monthly rosters from Dec 2019; each row is a run with the same figures, newest first.
Rosters Regulatory AUM Main clients
Apr 2026 to Oct 2026 $116,165,718,248 Registered funds and BDCs (50%)
Apr 2025 to Mar 2026 $98,336,524,659 Registered funds and BDCs (51%)
Apr 2024 to Mar 2025 $89,687,813,267 Registered funds and BDCs (51%)
May 2023 to Mar 2024 $84,555,460,486 Registered funds and BDCs (50%)
Apr 2023 $84,555,460,486 Registered funds and BDCs (50%)
Apr 2022 to Mar 2023 $92,188,430,938 Registered funds and BDCs (51%)
3 earlier changes not shown.

Portfolio style

Measured from the filed 13F common-share book for Jun 30, 2026, never from the firm's own description.

Style
Diversified active
Top 10 weight 15.7%, 148.8 effective positions, active share 74.6% against the Russell 1000 as of 2026-06-30; it meets none of the index-like, systematic-like or concentrated tests
Turnover
Medium turnover
39.6% over the last four quarters (30% to under 100%)
Horizon
Long horizon
Value-weighted holding period 16.2 quarters (12+), a floor since 38.9% of the book was already held when coverage starts

Closest benchmark: the Russell 1000 as of 2026-06-30, active share 74.6%; sector active share 26.2% against the combined 13F book's sector weights.

Over time 26 measured quarters

How the bands are measured

Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.

Clone Performance

Build a hypothetical price-return history from this filer's public 13F holdings.

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Portfolio Concentration

800 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026
Top Position
2.7%
+0.6 pts
Top 5
9.5%
+1.5 pts
Top 10
15.6%
+1.8 pts
HHI
67
Sep 2023 → Jun 2026 · range 58 – 68
Diversified+5

Portfolio Trend

26 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2026
Sector % Portfolio Value
Financial Services 19.3% $21,631,027,861
Technology 17.6% $19,717,467,388
Industrials 14.2% $15,942,875,486
Healthcare 12.0% $13,411,664,686
Consumer Cyclical 10.2% $11,415,310,462
Energy 6.1% $6,778,458,614
Basic Materials 5.8% $6,452,500,925
Consumer Defensive 5.6% $6,255,009,169
Utilities 3.7% $4,166,934,316
Communication Services 3.3% $3,652,835,193
Real Estate 2.2% $2,424,821,791
Unclassified 0.2% $170,145,718

Last Quarter's Activity

Export CSV
Jun 30, 2026 vs Mar 31, 2026

Added To

Positions the filer increased
25 positions
Ticker Δ Shares Shares Value Open

Trimmed

Positions the filer reduced
25 positions
Ticker Δ Shares Shares Value Open
— −2,474,088 71,496 $0

New Positions

Positions the filer opened this quarter
25 positions
Ticker Shares Value Open

Sold Out

Positions the filer fully exited
25 positions
Ticker Shares Value Open

Portfolio Positions

Export CSV View 13F filing
800 tracked positions · $112,019,051,609 total · filing declares 1,850 positions · $112,566,449,804 · as of Jun 30, 2026
Showing 1–50 of 800 positions by value · page 1 of 16
Ticker Company Shares Value (USD) % of Portfolio History

Showing the top 50 of 800 positions. Create a free account to see every position, past quarters, search, filters and CSV export.

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.