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Boston Partners Portfolio holdings
AUM
$113B
1-Year Est. Return
38.87%
This Fund
S&P 500
This Quarter
Est. Return
+4.08%
1 Year Est. Return
+38.87%
3 Year Est. Return
+108.29%
5 Year Est. Return
+142.95%
10 Year Est. Return
+500.61%
AUM
$95.5B
AUM Growth
-$1.12B
(-1.2%)
Cap. Flow
-$1.59B
Cap. Flow
% of AUM
-1.66%
Top 10 Holdings %
Top 10 Hldgs %
13.57%
Holding
857
New
106
Increased
293
Reduced
358
Closed
90
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Booking.com
BKNG
|
+$836M |
| 2 |
Marvell Technology
MRVL
|
+$518M |
| 3 |
Visa
V
|
+$461M |
| 4 |
NVIDIA
NVDA
|
+$307M |
| 5 |
McCormick & Company Non-Voting
MKC
|
+$281M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
UnitedHealth
UNH
|
+$483M |
| 2 |
Medtronic
MDT
|
+$451M |
| 3 |
AutoZone
AZO
|
+$361M |
| 4 |
Carlyle Group
CG
|
+$327M |
| 5 |
Keysight
KEYS
|
+$306M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Financials | 19.21% |
| 2 | Technology | 16.01% |
| 3 | Industrials | 14.55% |
| 4 | Healthcare | 11.39% |
| 5 | Consumer Discretionary | 9.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
276
Maximus
MMS
$3.31B
| $42.7M | 0.04% |
669,053
-211,486
| -24% | -$17.2M |
|
|
CPRX
277
DELISTED
Catalyst Pharmaceutical
CPRX
| $42.4M | 0.04% |
1,711,573
+480,201
| +39% | +$11.4M |
|
278
Regal Rexnord
RRX
$12.6B
| $41.8M | 0.04% |
223,413
+23,199
| +12% | +$4.31M |
|
279
Elevance Health
ELV
$84B
| $41.6M | 0.04% |
142,055
-5,754
| -4% | -$1.89M |
|
280
Federal Agricultural Mortgage
AGM
$2.56B
| $41.3M | 0.04% |
277,878
-67,673
| -20% | -$11.1M |
|
|
SOBO
281
South Bow Corp
SOBO
$7.42B
| $41.3M | 0.04% |
1,238,939
-72,942
| -6% | -$2.21M |
|
282
Innoviva
INVA
$1.52B
| $40M | 0.04% |
1,718,867
+170,489
| +11% | +$3.67M |
|
283
AMN Healthcare
AMN
$1.28B
| $39.2M | 0.04% |
2,138,388
+1,103,243
| +107% | +$21M |
|
284
Archrock
AROC
$5.9B
| $39.1M | 0.04% |
1,125,333
-78,363
| -7% | -$2.5M |
|
285
Celanese
CE
$4.62B
| $38.8M | 0.04% |
+590,127
| New | +$30.8M |
|
286
First Bancorp
FBP
$4.45B
| $38.8M | 0.04% |
1,814,961
+1,635,051
| +909% | +$35.2M |
|
|
GRDN
287
Guardian Pharmacy Services
GRDN
$2.56B
| $38.4M | 0.04% |
1,017,683
-36,953
| -4% | -$1.21M |
|
288
Group 1 Automotive
GPI
$3.36B
| $38.4M | 0.04% |
116,115
-7,416
| -6% | -$2.59M |
|
289
Element Solutions
ESI
$9.37B
| $37.5M | 0.04% |
1,097,570
-66,196
| -6% | -$2.07M |
|
290
Star Bulk Carriers
SBLK
$3.11B
| $37.4M | 0.04% |
1,626,444
+783,346
| +93% | +$17.8M |
|
291
Onto Innovation
ONTO
$14.1B
| $37.2M | 0.04% |
181,593
-72,756
| -29% | -$14.9M |
|
292
Wintrust Financial
WTFC
$10.9B
| $37.1M | 0.04% |
266,843
+15,928
| +6% | +$2.31M |
|
293
National Vision
EYE
$1.86B
| $36.9M | 0.04% |
1,423,943
-67,528
| -5% | -$1.83M |
|
294
RXO
RXO
$3.57B
| $36.5M | 0.04% |
+2,497,016
| New | +$36.6M |
|
295
Northeast Bank
NBN
$1.15B
| $36.3M | 0.04% |
320,868
+64,138
| +25% | +$7.25M |
|
296
Perella Weinberg Partners
PWP
$1.26B
| $36M | 0.04% |
1,983,844
+604,905
| +44% | +$11.9M |
|
297
Home BancShares
HOMB
$6.25B
| $36M | 0.04% |
1,333,686
+315,791
| +31% | +$8.89M |
|
298
Preferred Bank
PFBC
$1.26B
| $35.9M | 0.04% |
395,947
-96,960
| -20% | -$8.78M |
|
299
Lantheus
LNTH
$6.6B
| $35.7M | 0.04% |
+470,658
| New | +$33.8M |
|
300
Tidewater
TDW
$3.96B
| $35.7M | 0.04% |
426,390
+67,620
| +19% | +$4.7M |
|
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Boston Partners's Q1 2026 Portfolio in Review
As of Q1 2026, Boston Partners held 857 positions worth $95.5B, down 1.2% from $96.6B the previous quarter. Its ten largest holdings account for 14% of the portfolio.
Boston Partners's Q1 2026 filing shows 106 new, 293 increased, 358 reduced and 90 closed positions. Its largest new stake was Marvell Technology: 6,165,682 shares worth $613M. The largest sale was UnitedHealth, an estimated $483M.
By sector, the portfolio is most concentrated in Financials at 19% of assets, down from 21% a quarter earlier, followed by Technology and Industrials.
- Boston Partners's largest Q1 2026 buy was Marvell Technology: 6,165,682 shares worth $613M.
- Boston Partners added most to Booking.com in Q1 2026, an estimated $836M increase.
- Boston Partners's biggest Q1 2026 reduction was UnitedHealth, cutting an estimated $483M.
- Boston Partners fully exited Carlyle Group in Q1 2026, selling an estimated $327M.
- Boston Partners's ten largest holdings make up 14% of its $95.5B portfolio in Q1 2026.
- Boston Partners opened 106 new positions and closed 90 in Q1 2026.
- Boston Partners's portfolio value fell 1.2% quarter-over-quarter to $95.5B.
Based on Boston Partners's 13F filing for Q1 2026, filed 11 May 2026.