Mariner’s SEI Investments SEIC Stock Holding History

Mariner's SEIC Position: Q1 2026 in Review

Mariner increased its SEI Investments (SEIC) stake by 19% in Q1 2026, buying an estimated $150K and bringing the position to 11,603 shares worth $910K. The position accounts for ﹤0.01% of the portfolio, ranked #2039.

Mariner first reported a position in SEIC in Q2 2018 and has held it in 19 quarters since. 565 funds tracked by Wall St. Rank hold SEIC as of Q1 2026.

• Mariner held 11,603 shares of SEI Investments worth $910K as of Q1 2026.
• Mariner bought 1,827 SEI Investments shares in Q1 2026, an estimated $150K.
• SEI Investments made up ﹤0.01% of Mariner's portfolio in Q1 2026, its #2039 holding.
• Mariner first reported a position in SEI Investments in Q2 2018 and has held it in 19 quarters since.
• 565 funds tracked by Wall St. Rank held SEI Investments as of Q1 2026.

Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.