Boston Partners
SEIC icon

Boston Partners’s SEI Investments SEIC Stock Holding History

Boston Partners’s Portfolio SEIC Stock Details SEIC Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$271M Buy
3,093,791
+1,323,752
+75% +$115M 0.24% 139
2026
Q1 		$139M Buy
+1,770,039
New +$146M 0.15% 186
2017
Q3 		– Sell
-1,072,221
Closed -$57.7M – 779
2017
Q2 		$57.7M Sell
1,072,221
-1,918,308
-64% -$98.8M 0.07% 225
2017
Q1 		$151M Buy
2,990,529
+339,121
+13% +$17.1M 0.19% 150
2016
Q4 		$131M Sell
2,651,408
-529,516
-17% -$24.7M 0.17% 155
2016
Q3 		$145M Sell
3,180,924
-462,383
-13% -$21.7M 0.2% 149
2016
Q2 		$175M Buy
3,643,307
+388,821
+12% +$18.7M 0.25% 136
2016
Q1 		$140M Buy
3,254,486
+330,499
+11% +$13.6M 0.21% 146
2015
Q4 		$153M Buy
2,923,987
+232,657
+9% +$12.1M 0.22% 139
2015
Q3 		$130M Sell
2,691,330
-262,029
-9% -$13.3M 0.2% 148
2015
Q2 		$145M Buy
2,953,359
+525,374
+22% +$24.7M 0.21% 143
2015
Q1 		$107M Sell
2,427,985
-295,704
-11% -$12.4M 0.16% 161
2014
Q4 		$109M Buy
2,723,689
+220,180
+9% +$8.44M 0.16% 150
2014
Q3 		$90.5M Buy
2,503,509
+151,489
+6% +$5.4M 0.15% 157
2014
Q2 		$77.1M Buy
2,352,020
+323,611
+16% +$10.4M 0.13% 172
2014
Q1 		$68.2M Buy
2,028,409
+414,423
+26% +$14.1M 0.12% 172
2013
Q4 		$56.1M Buy
1,613,986
+372,828
+30% +$12.4M 0.11% 172
2013
Q3 		$38.4M Buy
1,241,158
+304,596
+33% +$9.39M 0.09% 194
2013
Q2 		$26.6M Buy
+936,562
New +$27.1M 0.07% 203

Other funds holding SEIC

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Loomis, Sayles & Company
Loomis, Sayles & Company Boston, Massachusetts $79.8B AUM 16.05% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Lord, Abbett & Co
Lord, Abbett & Co Jersey City, New Jersey $34.9B AUM 72.7% 1-Year Est. Return

Boston Partners's SEIC Position: Q2 2026 in Review

Boston Partners increased its SEI Investments (SEIC) stake by 75% in Q2 2026, buying an estimated $115M and bringing the position to 3,093,791 shares worth $271M. The position accounts for 0.24% of the portfolio, ranked #139.

Boston Partners first reported a position in SEIC in Q2 2013 and has held it in 19 quarters since. 573 funds tracked by Wall St. Rank hold SEIC as of Q2 2026.

  • Boston Partners held 3,093,791 shares of SEI Investments worth $271M as of Q2 2026.
  • Boston Partners bought 1,323,752 SEI Investments shares in Q2 2026, an estimated $115M.
  • SEI Investments made up 0.24% of Boston Partners's portfolio in Q2 2026, its #139 holding.
  • Boston Partners first reported a position in SEI Investments in Q2 2013 and has held it in 19 quarters since.
  • 573 funds tracked by Wall St. Rank held SEI Investments as of Q2 2026.

Based on Boston Partners's 13F filing for Q2 2026, filed 4 Aug 2026.