SEI Investments (SEIC) went public on March 26, 1990, when it opened at a split-adjusted price of $0.41.
| DATE | OPEN | HIGH | LOW | CLOSE | VOLUME |
|---|---|---|---|---|---|
March 2026 | $80.12 | $83.56 | $79.37 | $82.05 | 3,891,807 |
February 2026 | $87.49 | $88.92 | $76.27 | $81.32 | 15,165,795 |
January 2026 | $81.79 | $91.42 | $81.63 | $87.85 | 12,990,512 |
December 2025 | $79.87 | $86.45 | $79.20 | $82.02 | 13,052,918 |
November 2025 | $79.89 | $84.17 | $77.03 | $80.36 | 10,483,906 |
October 2025 | $83.98 | $85.61 | $77.86 | $80.12 | 16,912,160 |
September 2025 | $86.76 | $88.97 | $83.71 | $84.33 | 16,520,416 |
August 2025 | $86.30 | $90.41 | $85.02 | $87.74 | 12,472,179 |
July 2025 | $89.41 | $93.38 | $85.67 | $87.58 | 21,393,449 |
June 2025 | $83.73 | $89.97 | $81.92 | $89.31 | 20,206,642 |
May 2025 | $77.53 | $85.32 | $77.29 | $84.25 | 24,771,971 |
April 2025 | $76.58 | $78.10 | $63.90 | $77.37 | 17,992,846 |
March 2025 | $79.50 | $79.85 | $71.12 | $76.71 | 18,436,837 |
February 2025 | $83.79 | $85.89 | $77.88 | $79.10 | 10,974,319 |
January 2025 | $82.14 | $85.92 | $76.65 | $85.56 | 11,927,886 |
December 2024 | $81.55 | $85.72 | $79.22 | $81.51 | 15,153,580 |
November 2024 | $73.45 | $81.65 | $73.11 | $81.18 | 12,782,317 |
October 2024 | $68.19 | $75.60 | $67.35 | $73.45 | 16,147,823 |
September 2024 | $66.13 | $68.71 | $63.90 | $67.98 | 11,683,176 |
August 2024 | $66.65 | $67.19 | $61.29 | $66.44 | 8,978,549 |
July 2024 | $63.54 | $68.93 | $62.88 | $66.65 | 15,779,133 |
June 2024 | $66.01 | $66.14 | $62.54 | $63.56 | 12,315,646 |
May 2024 | $64.21 | $67.31 | $64.19 | $66.05 | 11,317,593 |
April 2024 | $70.05 | $70.05 | $63.55 | $64.34 | 11,737,548 |
March 2024 | $65.60 | $70.77 | $65.31 | $70.14 | 11,102,597 |
