NASDAQ:SEIC | Stock Price History | SEI INVESTMENTS CO

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
1981-03-25 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$0.18$0.70$2.72$10.58$41.07$159.491981-03-252026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

Historical Stock Price

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2026-09-04$110.6944,059
2026-09-03$110.4136,135
2026-09-02$109.6146,185
2026-09-01$111.0236,697
2026-08-31$111.6330,688
2026-08-28$111.7229,711
2026-08-27$111.30$151.90710,100$110.5038,808
2026-08-26$110.78$151.19609,900$110.3437,335
2026-08-25$110.98$151.46646,300$110.0634,586
2026-08-24$110.75$151.14866,700$110.1029,590
2026-08-21$109.53$149.48801,200$108.6331,306
2026-08-20$107.60$146.85600,800$107.7627,727
2026-08-19$107.36$146.52646,800$106.9541,541
2026-08-18$106.92$145.92489,700$106.1222,286
2026-08-17$105.47$143.94484,700$105.7328,061
2026-08-14$106.38$145.18362,200$106.1521,474
2026-08-13$106.39$145.19486,600$105.7937,958
2026-08-12$105.54$144.03509,800$104.3834,723
2026-08-11$104.63$142.79497,700$104.6917,965
2026-08-10$104.72$142.92457,900$105.2323,238
2026-08-07$104.70$142.89472,600$103.8238,755
2026-08-06$104.69$142.87583,500$105.1938,830
2026-08-05$104.76$142.97592,000$105.5633,211
2026-08-04$104.72$142.92725,600$105.1336,703
2026-08-03$104.19$142.19602,900$103.5535,487
2026-07-31$102.98$140.54824,200$102.1937,406
2026-07-30$103.04$140.62510,800$102.5531,256
2026-07-29$102.88$140.40649,900$102.4438,326
2026-07-28$103.14$140.76871,100$101.6548,870
2026-07-27$101.52$138.55795,200$98.6865,242
2026-07-24$99.22$135.41968,600$96.8159,187
2026-07-23$96.73$132.011,367,500$101.4282,918
2026-07-22$98.75$134.77815,500$97.7975,186
2026-07-21$97.65$133.27866,800$99.7049,677
2026-07-20$99.37$135.61834,700$99.4066,935
2026-07-17$99.25$135.45866,900
2026-07-16$100.26$136.831,542,400
2026-07-15$98.17$133.98956,000
2026-07-14$94.89$129.50781,200
2026-07-13$96.18$131.26499,400
2026-07-10$95.45$130.26600,300
2026-07-09$94.73$129.28728,700
2026-07-08$94.51$128.98709,300
2026-07-07$95.94$130.93633,000
2026-07-06$94.99$129.64691,300
2026-07-02$91.43$124.78730,700
2026-07-01$90.05$122.89577,600
2026-06-30$87.71$119.70564,900
2026-06-29$86.49$118.04617,700
2026-06-26$87.25$119.071,206,000
2026-06-25$87.93$120.00554,300
2026-06-24$88.89$121.31528,000
2026-06-23$90.21$123.11578,300
2026-06-22$90.51$123.52512,200
2026-06-18$89.44$122.061,712,000
2026-06-17$91.01$124.20647,700
2026-06-16$90.73$123.82628,100
2026-06-15$89.57$122.24551,000
2026-06-12$89.40$122.01500,800
2026-06-11$88.15$120.30407,600
2026-06-10$88.80$121.19441,200
2026-06-09$90.26$123.18750,100
2026-06-08$88.24$120.42511,900
2026-06-05$89.42$121.33708,900
2026-06-04$88.58$120.19505,600
2026-06-03$87.01$118.06600,100
2026-06-02$87.77$119.09516,100
2026-06-01$88.32$119.83520,100
2026-05-29$87.88$119.241,181,200
2026-05-28$88.60$120.21696,200
2026-05-27$89.68$121.68404,100
2026-05-26$90.76$123.14557,500
2026-05-22$90.53$122.83527,800
2026-05-21$89.59$121.56624,800
2026-05-20$90.77$123.16668,900
2026-05-19$91.04$123.52596,700
2026-05-18$92.01$124.84661,700
2026-05-15$90.58$122.90565,400
2026-05-14$91.70$124.42545,400
2026-05-13$92.24$125.15535,200
2026-05-12$92.29$125.22983,900
2026-05-11$91.59$124.27592,400
2026-05-08$91.18$123.71481,400
2026-05-07$89.89$121.96602,500
2026-05-06$91.17$123.70772,500
2026-05-05$90.79$123.18696,800
2026-05-04$91.27$123.84735,800
2026-05-01$90.22$122.41844,000
2026-04-30$90.68$123.031,275,500
2026-04-29$90.87$123.29932,900
2026-04-28$91.51$124.161,292,800
2026-04-27$91.06$123.551,185,000
2026-04-24$88.84$120.541,516,900
2026-04-23$91.05$123.542,446,500
2026-04-22$84.79$115.041,507,200
2026-04-21$83.14$112.801,719,100
2026-04-20$81.41$110.461,411,900
2026-04-17$79.79$108.261,150,400
2026-04-16$78.93$107.091,101,000
2026-04-15$80.01$108.56880,300