NASDAQ:SEIC | Historical Stock Price | 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.

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Historical Stock Price — 2003

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2003-12-31$15.24$16.051,319,600
2003-12-30$15.13$15.93787,400
2003-12-29$15.17$15.98877,800
2003-12-26$14.93$15.72167,200
2003-12-24$15.09$15.89216,600
2003-12-23$15.25$16.06563,600
2003-12-22$15.25$16.06505,800
2003-12-19$15.02$15.821,269,400
2003-12-18$14.91$15.71949,600
2003-12-17$14.78$15.57956,600
2003-12-16$14.78$15.57756,000
2003-12-15$14.90$15.69910,600
2003-12-12$15.30$16.111,045,200
2003-12-11$15.30$16.111,507,600
2003-12-10$14.97$15.771,857,200
2003-12-09$14.60$15.381,851,200
2003-12-08$15.17$15.98775,000
2003-12-05$15.03$15.831,148,000
2003-12-04$15.01$15.811,221,400
2003-12-03$15.18$15.992,411,400
2003-12-02$15.11$15.922,225,200
2003-12-01$15.00$15.802,993,200
2003-11-28$14.10$14.85504,800
2003-11-26$13.88$14.62868,600
2003-11-25$14.05$14.801,042,600
2003-11-24$13.83$14.571,077,200
2003-11-21$13.63$14.361,146,600
2003-11-20$13.70$14.431,228,000
2003-11-19$13.95$14.701,213,600
2003-11-18$13.90$14.642,353,800
2003-11-17$13.88$14.621,562,400
2003-11-14$13.97$14.711,428,200
2003-11-13$14.49$15.271,460,000
2003-11-12$14.68$15.471,705,400
2003-11-11$14.44$15.212,068,400
2003-11-10$14.44$15.211,527,400
2003-11-07$14.70$15.492,216,200
2003-11-06$14.21$14.972,403,400
2003-11-05$14.13$14.882,379,200
2003-11-04$14.32$15.081,714,000
2003-11-03$14.65$15.431,429,800
2003-10-31$14.55$15.332,803,600
2003-10-30$14.87$15.662,277,200
2003-10-29$15.20$16.01998,000
2003-10-28$15.46$16.291,489,000
2003-10-27$15.16$15.971,305,800
2003-10-24$14.93$15.732,784,600
2003-10-23$15.14$15.952,033,200
2003-10-22$15.57$16.402,185,800
2003-10-21$16.24$17.111,445,200
2003-10-20$16.50$17.381,273,600
2003-10-17$16.64$17.532,277,000
2003-10-16$17.09$18.001,899,800
2003-10-15$17.78$18.73976,000
2003-10-14$17.92$18.871,042,800
2003-10-13$17.88$18.84433,600
2003-10-10$17.43$18.37522,000
2003-10-09$17.51$18.45756,200
2003-10-08$17.34$18.271,125,800
2003-10-07$17.51$18.451,131,000
2003-10-06$17.16$18.08438,800
2003-10-03$17.00$17.901,159,000
2003-10-02$16.57$17.46710,800
2003-10-01$16.82$17.72604,000
2003-09-30$16.28$17.151,097,200
2003-09-29$16.31$17.181,030,400
2003-09-26$16.25$17.111,022,000
2003-09-25$16.67$17.57800,000
2003-09-24$16.96$17.871,013,600
2003-09-23$17.07$17.98815,200
2003-09-22$16.95$17.86678,400
2003-09-19$16.97$17.871,651,000
2003-09-18$17.14$18.062,061,600
2003-09-17$16.73$17.63617,400
2003-09-16$16.92$17.83643,000
2003-09-15$16.68$17.57685,600
2003-09-12$16.63$17.521,177,400
2003-09-11$16.65$17.541,247,000
2003-09-10$16.50$17.381,357,400
2003-09-09$16.98$17.891,132,000
2003-09-08$17.20$18.121,332,600
2003-09-05$17.25$18.171,227,600
2003-09-04$17.61$18.55733,400
2003-09-03$17.78$18.73787,200
2003-09-02$17.72$18.66736,800
2003-08-29$17.43$18.36644,600
2003-08-28$17.25$18.18943,800
2003-08-27$16.92$17.82983,000
2003-08-26$16.70$17.59626,200
2003-08-25$16.78$17.67510,000
2003-08-22$16.91$17.82464,200
2003-08-21$17.18$18.10609,800
2003-08-20$17.08$17.99637,600
2003-08-19$17.05$17.96879,600
2003-08-18$17.06$17.97635,200
2003-08-15$17.09$18.00197,600
2003-08-14$16.96$17.87366,000
2003-08-13$16.75$17.65496,600
2003-08-12$16.90$17.80800,000
2003-08-11$16.50$17.381,027,000
2003-08-08$16.40$17.27755,400
2003-08-07$16.53$17.411,602,000
2003-08-06$16.83$17.73745,400
2003-08-05$16.73$17.62845,200
2003-08-04$17.04$17.95663,600
2003-08-01$16.91$17.81464,400
2003-07-31$17.48$18.41873,200
2003-07-30$16.97$17.87608,000
2003-07-29$16.93$17.841,002,200
2003-07-28$17.40$18.33416,200
2003-07-25$17.34$18.27429,800
2003-07-24$17.17$18.081,246,600
2003-07-23$17.14$18.05875,800
2003-07-22$17.15$18.07990,200
2003-07-21$16.47$17.35838,400
2003-07-18$16.98$17.89898,200
2003-07-17$16.64$17.531,697,000
2003-07-16$17.50$18.441,102,800
2003-07-15$17.74$18.681,480,600
2003-07-14$17.96$18.921,183,000
2003-07-11$17.70$18.64987,800
2003-07-10$17.25$18.171,414,800
2003-07-09$17.53$18.461,336,000
2003-07-08$17.48$18.411,404,000
2003-07-07$16.89$17.791,593,000
2003-07-03$16.05$16.91327,800
2003-07-02$16.06$16.911,332,600
2003-07-01$15.97$16.831,591,200
2003-06-30$16.00$16.85782,600
2003-06-27$15.77$16.611,174,600
2003-06-26$16.16$17.03736,600
2003-06-25$15.97$16.83719,200
2003-06-24$15.95$16.801,451,400
2003-06-23$15.94$16.791,439,800
2003-06-20$15.98$16.831,285,400
2003-06-19$15.97$16.831,842,600
2003-06-18$16.53$17.422,010,000
2003-06-17$16.99$17.903,357,600
2003-06-16$15.92$16.771,437,600
2003-06-13$15.24$16.05960,600
2003-06-12$15.56$16.391,824,600
2003-06-11$15.59$16.42982,200
2003-06-10$15.21$16.02830,000
2003-06-09$14.54$15.31773,200
2003-06-06$15.33$16.151,419,600
2003-06-05$14.80$15.59583,800
2003-06-04$14.82$15.57451,200
2003-06-03$14.68$15.43575,600
2003-06-02$14.84$15.59959,800
2003-05-30$14.53$15.27996,000
2003-05-29$14.20$14.921,039,400
2003-05-28$14.05$14.76889,400
2003-05-27$13.89$14.591,020,800
2003-05-23$13.37$14.05793,400
2003-05-22$13.29$13.97877,400
2003-05-21$13.36$14.04570,600
2003-05-20$13.42$14.111,238,200
2003-05-19$13.33$14.011,514,000
2003-05-16$13.58$14.27814,000
2003-05-15$13.90$14.61553,800
2003-05-14$13.85$14.56606,000
2003-05-13$14.02$14.741,238,000
2003-05-12$13.83$14.54896,000
2003-05-09$13.78$14.48582,800
2003-05-08$13.75$14.451,227,400
2003-05-07$13.89$14.59999,600
2003-05-06$13.94$14.651,212,200
2003-05-05$13.56$14.25874,000
2003-05-02$13.51$14.19764,000
2003-05-01$12.93$13.591,399,400
2003-04-30$13.16$13.83837,200
2003-04-29$13.08$13.741,169,800
2003-04-28$13.14$13.811,023,000
2003-04-25$12.90$13.551,522,000
2003-04-24$13.15$13.821,245,000
2003-04-23$13.50$14.182,252,200
2003-04-22$13.29$13.961,878,800
2003-04-21$13.24$13.911,572,600
2003-04-17$13.78$14.482,523,800
2003-04-16$14.28$15.011,141,800
2003-04-15$14.51$15.251,148,200
2003-04-14$13.96$14.67953,800
2003-04-11$13.35$14.031,027,800
2003-04-10$13.35$14.031,035,400
2003-04-09$13.62$14.31683,000
2003-04-08$13.66$14.35675,000
2003-04-07$13.79$14.49881,000
2003-04-04$13.67$14.36504,000
2003-04-03$13.70$14.39788,200
2003-04-02$13.77$14.47945,600
2003-04-01$13.19$13.86870,200
2003-03-31$13.10$13.771,080,600
2003-03-28$13.32$13.99490,600
2003-03-27$13.14$13.81817,000
2003-03-26$13.10$13.77431,000
2003-03-25$13.11$13.77726,600
2003-03-24$13.06$13.73659,800
2003-03-21$13.57$14.26945,000
2003-03-20$13.26$13.93751,000
2003-03-19$12.96$13.62844,200
2003-03-18$13.00$13.661,199,600
2003-03-17$12.97$13.63986,200
2003-03-14$12.33$12.95748,600
2003-03-13$12.26$12.881,050,600
2003-03-12$11.45$12.032,024,600
2003-03-11$11.69$12.29860,600
2003-03-10$11.86$12.471,131,200
2003-03-07$12.59$13.231,167,800
2003-03-06$12.24$12.861,059,400
2003-03-05$12.56$13.20614,400
2003-03-04$12.33$12.96464,800
2003-03-03$12.69$13.34982,600
2003-02-28$12.61$13.25642,000
2003-02-27$12.47$13.11677,000
2003-02-26$12.25$12.87648,000
2003-02-25$12.49$13.12938,000
2003-02-24$12.36$12.99569,800
2003-02-21$12.67$13.31751,600
2003-02-20$12.53$13.16560,400
2003-02-19$12.44$13.071,384,400
2003-02-18$12.73$13.381,453,800
2003-02-14$12.13$12.741,826,800
2003-02-13$11.60$12.191,116,400
2003-02-12$11.53$12.111,353,200
2003-02-11$12.03$12.641,316,000
2003-02-10$12.27$12.891,216,800
2003-02-07$12.15$12.77715,400
2003-02-06$12.31$12.93929,200
2003-02-05$12.25$12.88835,800
2003-02-04$12.24$12.86869,200
2003-02-03$12.57$13.211,066,400
2003-01-31$12.75$13.40789,800
2003-01-30$12.62$13.26929,400
2003-01-29$12.83$13.481,158,200
2003-01-28$12.49$13.131,147,400
2003-01-27$12.55$13.191,244,400
2003-01-24$13.04$13.711,229,000
2003-01-23$13.17$13.84964,000
2003-01-22$13.07$13.741,103,200
2003-01-21$13.45$14.141,055,400
2003-01-17$14.02$14.74472,800
2003-01-16$14.49$15.22636,800
2003-01-15$14.18$14.90934,000
2003-01-14$14.76$15.51692,000
2003-01-13$14.75$15.50640,800
2003-01-10$14.80$15.55863,400
2003-01-09$14.98$15.741,071,800
2003-01-08$14.42$15.16925,400
2003-01-07$14.81$15.571,166,200
2003-01-06$14.71$15.461,318,400
2003-01-03$14.01$14.73822,000
2003-01-02$14.05$14.77511,000