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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 month, 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
MonthOpenHighLowCloseChangeVolume
Oct 2026$102.37$110.00$98.45$103.42+0.74%17,562,406
Sep 2026$110.57$111.48$101.47$102.66-7.50%18,495,684
Aug 2026$103.47$112.15$102.59$110.98+7.77%12,530,350
Jul 2026$87.71$104.47$87.66$102.98+17.41%17,821,506
Jun 2026$87.75$91.95$85.94$87.71-0.19%13,562,543
May 2026$91.18$93.50$87.56$87.88-3.09%13,274,290
Apr 2026$78.92$92.87$75.08$90.68+15.56%24,557,627
Mar 2026$80.10$83.56$75.10$78.47-3.50%19,604,027
Feb 2026$87.49$88.92$76.27$81.32-7.43%15,166,035
Jan 2026$81.79$91.42$81.63$87.85+7.11%12,990,512
Dec 2025$80.36$86.98$79.69$82.02+1.43%13,052,970
Nov 2025$80.38$84.69$77.51$80.86+0.31%10,483,906
Oct 2025$84.50$86.14$78.34$80.61-5.00%16,912,160
Sep 2025$87.29$89.52$84.23$84.85-3.89%16,520,416
Aug 2025$86.83$90.97$85.55$88.28+0.18%12,472,179
Jul 2025$89.96$93.96$86.20$88.12-1.94%21,393,449
Jun 2025$84.73$90.52$82.43$89.86+5.40%20,206,642
May 2025$78.46$86.34$78.21$85.26+8.90%25,582,941
Apr 2025$77.50$79.03$64.66$78.29+0.85%17,992,846
Mar 2025$80.45$80.80$71.97$77.63-3.02%18,436,837
Feb 2025$84.79$86.92$78.81$80.05-7.54%10,974,319
Jan 2025$83.12$86.95$77.57$86.58+4.97%11,927,886
Dec 2024$83.01$87.25$80.63$82.48-0.18%15,153,580
Nov 2024$74.76$83.11$74.42$82.63+10.53%12,782,317
Oct 2024$69.41$76.95$68.56$74.76+8.05%16,147,823
Sep 2024$67.31$69.94$65.04$69.19+2.31%11,683,176
Aug 2024$67.84$68.39$62.38$67.63-0.31%8,978,549
Jul 2024$64.67$70.16$64.00$67.84+4.87%15,779,133
Jun 2024$67.67$67.80$63.66$64.69-4.46%12,315,646
May 2024$65.82$69.00$65.80$67.71+2.67%11,317,593
Apr 2024$71.81$71.81$65.14$65.95-8.28%11,737,548
Mar 2024$67.25$72.54$66.95$71.90+6.91%11,102,597
Feb 2024$64.95$67.83$64.14$67.25+6.34%9,844,294
Jan 2024$63.06$65.18$61.58$63.24-0.49%15,398,673
Dec 2023$58.74$64.95$58.34$63.55+8.32%11,445,898
Nov 2023$53.80$58.76$53.49$58.67+9.34%9,981,808
Oct 2023$60.07$60.15$52.20$53.66-10.91%12,491,998
Sep 2023$62.36$62.72$59.86$60.23-2.95%11,592,476
Aug 2023$62.99$63.16$60.16$62.06-1.48%10,648,431
Jul 2023$59.40$64.43$58.25$62.99+5.65%11,250,550
Jun 2023$56.90$59.87$56.51$59.62+5.37%11,503,434
May 2023$58.82$59.85$56.18$56.58-3.96%13,058,027
Apr 2023$57.29$59.66$56.10$58.91+2.36%8,581,296
Mar 2023$59.94$60.87$53.93$57.55-4.48%10,940,147
Feb 2023$62.35$64.69$59.17$60.25-3.49%8,027,367
Jan 2023$58.85$63.35$58.45$62.43+7.08%10,441,687
Dec 2022$62.82$63.49$56.72$58.30-6.39%10,377,223
Nov 2022$54.63$62.85$52.79$62.28+14.70%10,739,949
Oct 2022$49.26$54.44$46.30$54.30+10.70%13,043,030
Sep 2022$54.40$57.46$48.90$49.05-10.33%12,186,161
Aug 2022$55.06$58.96$53.76$54.70-1.19%11,443,305
Jul 2022$53.58$55.70$51.07$55.36+2.48%11,126,071
Jun 2022$58.51$58.59$51.34$54.02-7.55%13,523,955
May 2022$55.97$58.71$52.84$58.43+4.86%18,065,065
Apr 2022$60.76$61.43$55.38$55.72-7.46%12,211,301
Mar 2022$58.00$62.13$55.38$60.21+2.78%15,791,078
Feb 2022$58.44$61.51$54.45$58.58-0.05%13,861,048
Jan 2022$61.30$64.29$54.03$58.61-3.82%11,925,116
Dec 2021$60.75$63.44$57.72$60.94+2.20%17,973,013
Nov 2021$63.44$65.22$59.34$59.63-5.41%8,795,360

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%