Mariner
SEIC icon

Mariner’s SEI Investments SEIC Stock Holding History

Mariner’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 		– Sell
-11,603
Closed -$910K – 3864
2026
Q1 		$910K Buy
11,603
+1,827
+19% +$150K ﹤0.01% 2039
2025
Q4 		$801K Buy
9,776
+4,840
+98% +$398K ﹤0.01% 2100
2025
Q3 		$419K Sell
4,936
-3,493
-41% -$310K ﹤0.01% 2567
2025
Q2 		$757K Buy
8,429
+3,359
+66% +$271K ﹤0.01% 2004
2025
Q1 		$394K Sell
5,070
-3,334
-40% -$268K ﹤0.01% 2394
2024
Q4 		$693K Buy
8,404
+419
+5% +$32.9K ﹤0.01% 1914
2024
Q3 		$553K Buy
7,985
+658
+9% +$43.9K ﹤0.01% 2047
2024
Q2 		$474K Buy
7,327
+458
+7% +$30.8K ﹤0.01% 2087
2024
Q1 		$494K Buy
6,869
+327
+5% +$21.7K ﹤0.01% 2028
2023
Q4 		$416K Sell
6,542
-1,286
-16% -$75K ﹤0.01% 2075
2023
Q3 		$471K Buy
7,828
+313
+4% +$19.2K ﹤0.01% 1819
2023
Q2 		$448K Buy
7,515
+555
+8% +$32.3K ﹤0.01% 1821
2023
Q1 		$401K Buy
6,960
+250
+4% +$15K ﹤0.01% 1838
2022
Q4 		$391K Sell
6,710
-428
-6% -$24.1K ﹤0.01% 1829
2022
Q3 		$350K Buy
+7,138
New +$390K ﹤0.01% 1659
2019
Q3 		– Sell
-5,048
Closed -$283K – 985
2019
Q2 		$283K Sell
5,048
-124
-2% -$6.69K ﹤0.01% 906
2019
Q1 		$270K Buy
+5,172
New +$259K ﹤0.01% 850
2018
Q4 		– Sell
-4,207
Closed -$257K – 887
2018
Q3 		$257K Buy
4,207
+229
+6% +$14.2K 0.01% 695
2018
Q2 		$249K Buy
+3,978
New +$265K 0.01% 686

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
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 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

Mariner's SEIC Position: Q2 2026 in Review

Mariner sold out of SEI Investments (SEIC) in Q2 2026, closing a stake of 11,603 shares — an estimated $910K sold.

Mariner first reported a position in SEIC in Q2 2018 and held it in 19 quarters. The position peaked at $910K in Q1 2026. 574 funds tracked by Wall St. Rank hold SEIC as of Q2 2026.

  • Mariner reported no remaining SEI Investments position as of Q2 2026 after selling out during the quarter.
  • Mariner sold 11,603 SEI Investments shares in Q2 2026, an estimated $910K.
  • Mariner first reported a position in SEI Investments in Q2 2018 and held it in 19 quarters.
  • Mariner's SEI Investments position peaked at $910K in Q1 2026.
  • 574 funds tracked by Wall St. Rank held SEI Investments as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.