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SEI Investments Co (SEIC) stock

SEICNasdaqSecurity Brokers, Dealers & Flotation CompaniesFiscal year ends December 31
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Oct 26, 2026Score 17/3022% above fair value
$103.42−1.31 (-1.25%)

Close on Oct 30, 2026Market cap $12.41BP/E 18.2Yield 0.98%

Price history

SEI Investments share prices for every week, newest first. Adjusted for stock splits, not for dividends.

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Close, Oct 30, 2026
$103.42
-1.25% on the day
52-week range
$75.08 – $112.15
-7.8% from the high
Change over 52 weeks
+28.0%
From $80.80 on Oct 30, 2025
Average volume
770,586
Shares a day, last 90 sessions
Week ofOpenHighLowCloseChangeVolume
Oct 26, 2026$102.78$105.22$102.09$103.42+1.10%3,779,099
Oct 19, 2026$104.42$110.00$102.01$102.30-2.02%4,818,374
Oct 12, 2026$104.70$106.81$102.90$104.40-0.29%4,150,945
Oct 5, 2026$102.16$105.03$100.87$104.70+2.22%3,532,284
Sep 28, 2026$105.75$105.75$98.45$102.43-3.05%3,114,900
Sep 21, 2026$106.25$106.25$101.47$105.65+0.43%4,791,727
Sep 14, 2026$107.86$108.05$103.22$105.20-1.62%6,561,772
Sep 8, 2026$110.33$110.75$105.69$106.93-3.13%2,650,804
Aug 31, 2026$111.46$111.63$108.10$110.39-1.11%3,380,975
Aug 24, 2026$109.75$112.15$109.62$111.63+1.92%3,493,776
Aug 17, 2026$105.96$109.75$105.29$109.53+2.96%3,023,086
Aug 10, 2026$104.70$106.91$103.96$106.38+1.60%2,314,099
Aug 3, 2026$103.47$107.00$102.59$104.70+1.67%2,976,599
Jul 27, 2026$99.22$104.47$99.16$102.98+3.79%3,651,237
Jul 20, 2026$99.29$102.29$95.40$99.22-0.03%4,853,246
Jul 13, 2026$96.14$100.79$94.73$99.25+3.98%4,645,900
Jul 6, 2026$91.20$96.60$91.20$95.45+4.40%3,362,805
Jun 29, 2026$87.43$92.00$85.94$91.43+4.79%2,490,878
Jun 22, 2026$89.91$91.50$86.39$87.25-2.45%3,378,823
Jun 15, 2026$89.87$91.95$88.76$89.44+0.04%3,538,863
Jun 8, 2026$88.36$91.40$87.66$89.40-0.02%2,611,478
Jun 1, 2026$87.75$89.67$86.26$89.42+1.75%2,850,819
May 26, 2026$90.77$91.27$87.56$87.88-2.93%2,838,987
May 18, 2026$90.49$92.69$88.73$90.53-0.06%3,079,887
May 11, 2026$91.18$93.50$90.35$90.58-0.66%3,222,399
May 4, 2026$90.19$92.12$88.78$91.18+1.06%3,289,011
Apr 27, 2026$88.80$92.21$88.29$90.22+1.55%5,530,211
Apr 20, 2026$79.68$92.87$79.68$88.84+11.34%8,601,615
Apr 13, 2026$76.45$81.16$76.35$79.79+3.65%4,852,472
Apr 6, 2026$76.66$78.19$75.08$76.98-0.04%5,352,562
Mar 30, 2026$76.38$79.27$76.28$77.01+1.70%2,761,157
Mar 23, 2026$79.57$79.78$75.10$75.72-2.66%3,686,756
Mar 16, 2026$80.44$81.37$77.00$77.79-2.63%4,090,023
Mar 9, 2026$80.22$82.09$77.57$79.89-1.90%5,161,081
Mar 2, 2026$80.10$83.56$79.12$81.44+0.15%4,969,783
Feb 23, 2026$81.39$83.60$78.61$81.32-0.09%3,492,701
Feb 17, 2026$78.89$81.74$77.53$81.39+3.51%2,555,939
Feb 9, 2026$84.54$86.04$76.27$78.63-6.89%4,782,927
Feb 2, 2026$87.49$88.92$82.95$84.45-3.87%4,334,468
Jan 26, 2026$85.15$91.42$84.01$87.85+3.11%5,060,777
Jan 20, 2026$85.36$86.99$83.52$85.20-0.94%1,835,633
Jan 12, 2026$86.00$86.88$84.09$86.01-0.88%2,521,692
Jan 5, 2026$82.93$88.25$82.88$86.77+4.53%3,015,100
Dec 29, 2025$84.38$84.45$81.63$83.01-2.17%2,087,613
Dec 22, 2025$83.38$86.98$83.32$84.85+1.69%1,944,907
Dec 15, 2025$82.63$84.36$81.39$83.44+0.53%4,161,539
Dec 8, 2025$80.98$84.04$80.37$83.00+2.34%2,980,501
Dec 1, 2025$80.36$82.18$79.69$81.10+0.30%2,435,720
Nov 24, 2025$79.89$81.62$79.15$80.86+1.02%1,872,328
Nov 17, 2025$81.19$81.30$77.51$80.04-1.88%3,285,653
Nov 10, 2025$83.09$84.69$80.45$81.57-1.63%2,662,424
Nov 3, 2025$80.38$83.21$79.54$82.92+2.87%2,663,501

Seasonality

SEIC return in each calendar month over the last 10 years, including dividends. The current month runs to the latest close.

YearJanFebMarAprMayJunJulAugSepOctNovDec
Average1.2%-1.1%-0.6%0.3%1.1%2.1%2.9%1.4%-2.7%0.1%6.0%1.1%
Months up5 of 104 of 105 of 107 of 106 of 106 of 106 of 106 of 103 of 106 of 108 of 97 of 9
20267.1%-7.4%-3.5%15.6%-3.1%0.4%17.4%7.8%-7.5%0.7%
20255.0%-7.5%-3.0%0.9%8.9%6.0%-1.9%0.2%-3.9%-5.0%0.3%2.1%
2024-0.5%6.3%6.9%-8.3%2.7%-3.8%4.9%-0.3%2.3%8.1%10.5%0.4%
20237.1%-3.5%-4.5%2.4%-4.0%6.1%5.7%-1.5%-2.9%-10.9%9.3%9.1%
2022-3.8%-0.1%2.8%-7.5%4.9%-6.9%2.5%-1.2%-10.3%10.7%14.7%-5.7%
2021-8.0%6.0%8.8%0.8%3.3%-1.7%-1.9%3.3%-5.6%6.3%-5.4%2.9%
2020-0.3%-16.2%-15.3%10.0%6.4%2.0%-4.8%0.1%-3.1%-3.1%7.3%9.7%
20192.9%11.0%-0.9%4.2%-7.7%12.3%6.2%-3.5%3.0%1.1%7.7%2.0%
20184.6%-3.1%2.9%-15.6%0.9%-1.5%-4.1%5.2%-3.1%-12.5%0.5%-13.3%
2017-1.7%3.8%0.2%0.5%-1.2%8.0%5.1%3.5%4.4%5.7%9.1%2.6%