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 — 1997

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1997-12-31$3.50$3.63252,000——
1997-12-30$3.52$3.65291,600——
1997-12-29$3.48$3.61277,200——
1997-12-26$3.48$3.60135,600——
1997-12-24$3.46$3.58176,400——
1997-12-23$3.46$3.58400,800——
1997-12-22$3.42$3.54392,400——
1997-12-19$3.45$3.57602,400——
1997-12-18$3.52$3.64540,000——
1997-12-17$3.67$3.791,159,200——
1997-12-16$3.55$3.68158,400——
1997-12-15$3.52$3.64600,000——
1997-12-12$3.54$3.67514,800——
1997-12-11$3.54$3.67433,200——
1997-12-10$3.56$3.68244,800——
1997-12-09$3.57$3.70361,200——
1997-12-08$3.50$3.62471,600——
1997-12-05$3.52$3.64136,800——
1997-12-04$3.56$3.69122,400——
1997-12-03$3.60$3.73310,800——
1997-12-02$3.58$3.71198,000——
1997-12-01$3.58$3.71609,600——
1997-11-28$3.46$3.5879,200——
1997-11-26$3.47$3.60272,400——
1997-11-25$3.50$3.62820,800——
1997-11-24$3.50$3.62182,400——
1997-11-21$3.55$3.68164,400——
1997-11-20$3.52$3.64302,400——
1997-11-19$3.52$3.6482,800——
1997-11-18$3.54$3.671,659,600——
1997-11-17$3.58$3.71627,600——
1997-11-14$3.46$3.58165,600——
1997-11-13$3.44$3.56500,400——
1997-11-12$3.49$3.61447,600——
1997-11-11$3.63$3.75195,600——
1997-11-10$3.55$3.68130,800——
1997-11-07$3.49$3.61608,400——
1997-11-06$3.58$3.71182,400——
1997-11-05$3.60$3.731,224,000——
1997-11-04$3.56$3.69265,200——
1997-11-03$3.59$3.72588,000——
1997-10-31$3.55$3.67510,000——
1997-10-30$3.56$3.69782,400——
1997-10-29$3.53$3.651,522,800——
1997-10-28$3.41$3.531,897,200——
1997-10-27$3.24$3.351,461,600——
1997-10-24$3.54$3.67714,000——
1997-10-23$3.54$3.671,149,600——
1997-10-22$3.69$3.821,431,600——
1997-10-21$3.57$3.701,215,600——
1997-10-20$3.50$3.62774,000——
1997-10-17$3.34$3.46813,600——
1997-10-16$3.38$3.49728,400——
1997-10-15$3.45$3.57610,800——
1997-10-14$3.48$3.60722,400——
1997-10-13$3.53$3.651,306,800——
1997-10-10$3.39$3.501,148,400——
1997-10-09$3.36$3.482,074,800——
1997-10-08$3.33$3.453,674,400——
1997-10-07$2.95$3.06154,800——
1997-10-06$2.94$3.04435,600——
1997-10-03$2.94$3.04602,400——
1997-10-02$2.86$2.96529,200——
1997-10-01$2.77$2.87303,600——
1997-09-30$2.75$2.85292,800——
1997-09-29$2.75$2.85351,600——
1997-09-26$2.73$2.83510,000——
1997-09-25$2.72$2.81350,400——
1997-09-24$2.69$2.78409,200——
1997-09-23$2.66$2.75300,000——
1997-09-22$2.67$2.76490,800——
1997-09-19$2.66$2.75148,800——
1997-09-18$2.66$2.75225,600——
1997-09-17$2.69$2.78238,800——
1997-09-16$2.67$2.76400,800——
1997-09-15$2.64$2.73860,400——
1997-09-12$2.63$2.721,497,600——
1997-09-11$2.54$2.63952,800——
1997-09-10$2.52$2.61778,800——
1997-09-09$2.54$2.63332,400——
1997-09-08$2.53$2.61980,400——
1997-09-05$2.50$2.591,104,000——
1997-09-04$2.44$2.521,118,400——
1997-09-03$2.41$2.49375,600——
1997-09-02$2.39$2.47309,600——
1997-08-29$2.42$2.50229,200——
1997-08-28$2.42$2.50804,000——
1997-08-27$2.38$2.46552,000——
1997-08-26$2.33$2.41429,600——
1997-08-25$2.40$2.48147,600——
1997-08-22$2.40$2.48406,800——
1997-08-21$2.37$2.45211,200——
1997-08-20$2.39$2.47259,200——
1997-08-19$2.34$2.43350,400——
1997-08-18$2.34$2.42801,600——
1997-08-15$2.38$2.46246,000——
1997-08-14$2.41$2.49260,400——
1997-08-13$2.40$2.48370,800——
1997-08-12$2.42$2.50808,800——
1997-08-11$2.39$2.47607,200——
1997-08-08$2.40$2.48439,200——
1997-08-07$2.42$2.50356,400——
1997-08-06$2.41$2.49415,200——
1997-08-05$2.40$2.48283,200——
1997-08-04$2.40$2.481,045,200——
1997-08-01$2.46$2.541,045,200——
1997-07-31$2.43$2.51939,600——
1997-07-30$2.40$2.48548,400——
1997-07-29$2.41$2.501,320,000——
1997-07-28$2.39$2.47667,200——
1997-07-25$2.39$2.47499,200——
1997-07-24$2.36$2.45896,400——
1997-07-23$2.44$2.523,258,000——
1997-07-22$2.25$2.331,650,000——
1997-07-21$2.15$2.22794,400——
1997-07-18$2.19$2.26698,400——
1997-07-17$2.15$2.22732,000——
1997-07-16$2.21$2.291,334,400——
1997-07-15$2.24$2.32843,600——
1997-07-14$2.27$2.351,083,600——
1997-07-11$2.33$2.411,119,600——
1997-07-10$2.25$2.332,055,600——
1997-07-09$2.23$2.31667,200——
1997-07-08$2.22$2.301,880,400——
1997-07-07$2.10$2.171,177,200——
1997-07-03$2.06$2.13613,200——
1997-07-02$2.09$2.161,010,400——
1997-07-01$2.03$2.10482,400——
1997-06-30$2.01$2.08487,200——
1997-06-27$2.00$2.07247,200——
1997-06-26$2.02$2.09639,600——
1997-06-25$2.01$2.08516,000——
1997-06-24$2.01$2.08514,800——
1997-06-23$2.00$2.07352,800——
1997-06-20$2.01$2.08770,400——
1997-06-19$2.02$2.091,310,400——
1997-06-18$2.01$2.08703,200——
1997-06-17$1.99$2.06596,400——
1997-06-16$2.01$2.081,960,800——
1997-06-13$1.97$2.041,003,200——
1997-06-12$1.95$2.021,818,000——
1997-06-11$1.85$1.92252,000——
1997-06-10$1.85$1.92804,000——
1997-06-09$1.89$1.95458,400——
1997-06-06$1.90$1.96229,200——
1997-06-05$1.91$1.97440,400——
1997-06-04$1.91$1.97379,200——
1997-06-03$1.91$1.97499,200——
1997-06-02$1.89$1.95888,000——
1997-05-30$1.88$1.931,054,800——
1997-05-29$1.80$1.86732,000——
1997-05-28$1.77$1.83420,000——
1997-05-27$1.77$1.83378,000——
1997-05-23$1.77$1.83531,600——
1997-05-22$1.77$1.83322,800——
1997-05-21$1.75$1.81318,000——
1997-05-20$1.75$1.81459,600——
1997-05-19$1.78$1.84678,000——
1997-05-16$1.79$1.85429,600——
1997-05-15$1.77$1.83381,600——
1997-05-14$1.77$1.83240,000——
1997-05-13$1.80$1.86483,600——
1997-05-12$1.79$1.85186,000——
1997-05-09$1.79$1.85267,600——
1997-05-08$1.79$1.84409,200——
1997-05-07$1.83$1.89286,800——
1997-05-06$1.82$1.881,112,400——
1997-05-05$1.84$1.901,010,400——
1997-05-02$1.82$1.88472,800——
1997-05-01$1.76$1.82644,400——
1997-04-30$1.75$1.81210,000——
1997-04-29$1.71$1.76480,000——
1997-04-28$1.71$1.76512,400——
1997-04-25$1.65$1.70398,400——
1997-04-24$1.63$1.68544,800——
1997-04-23$1.59$1.64644,400——
1997-04-22$1.63$1.68658,800——
1997-04-21$1.67$1.72261,600——
1997-04-18$1.69$1.74172,800——
1997-04-17$1.70$1.75237,600——
1997-04-16$1.70$1.75559,200——
1997-04-15$1.70$1.75565,200——
1997-04-14$1.73$1.78290,400——
1997-04-11$1.72$1.77175,200——
1997-04-10$1.75$1.81216,000——
1997-04-09$1.77$1.83486,000——
1997-04-08$1.75$1.81183,600——
1997-04-07$1.74$1.79361,200——
1997-04-04$1.72$1.77921,600——
1997-04-03$1.73$1.78579,600——
1997-04-02$1.77$1.83135,600——
1997-04-01$1.73$1.78208,800——
1997-03-31$1.75$1.81670,800——
1997-03-27$1.74$1.79310,800——
1997-03-26$1.73$1.78710,400——
1997-03-25$1.74$1.79152,400——
1997-03-24$1.73$1.78800,400——
1997-03-21$1.77$1.83309,600——
1997-03-20$1.80$1.86387,600——
1997-03-19$1.80$1.86192,000——
1997-03-18$1.82$1.88154,800——
1997-03-17$1.80$1.86674,400——
1997-03-14$1.83$1.891,075,200——
1997-03-13$1.86$1.92211,200——
1997-03-12$1.91$1.97468,000——
1997-03-11$1.91$1.97854,400——
1997-03-10$1.92$1.98602,400——
1997-03-07$1.90$1.96156,000——
1997-03-06$1.90$1.96890,400——
1997-03-05$1.91$1.97812,400——
1997-03-04$1.82$1.88201,600——
1997-03-03$1.83$1.89244,800——
1997-02-28$1.84$1.90350,400——
1997-02-27$1.86$1.92230,400——
1997-02-26$1.89$1.95291,600——
1997-02-25$1.92$1.98255,600——
1997-02-24$1.92$1.98264,000——
1997-02-21$1.94$2.00272,400——
1997-02-20$1.92$1.98380,400——
1997-02-19$1.90$1.96580,800——
1997-02-18$1.91$1.971,752,000——
1997-02-14$1.93$1.991,036,800——
1997-02-13$1.91$1.973,132,000——
1997-02-12$2.08$2.155,037,600——
1997-02-11$1.93$1.991,366,800——
1997-02-10$1.89$1.951,333,200——
1997-02-07$1.79$1.85850,800——
1997-02-06$1.74$1.79337,200——
1997-02-05$1.74$1.791,626,000——
1997-02-04$1.73$1.782,516,400——
1997-02-03$1.76$1.824,330,800——
1997-01-31$1.67$1.72334,800——
1997-01-30$1.70$1.75631,200——
1997-01-29$1.68$1.73930,000——
1997-01-28$1.69$1.74800,400——
1997-01-27$1.69$1.74446,400——
1997-01-24$1.70$1.75733,200——
1997-01-23$1.72$1.77718,800——
1997-01-22$1.74$1.79355,200——
1997-01-21$1.75$1.81769,200——
1997-01-20$1.76$1.821,194,000——
1997-01-17$1.71$1.761,190,400——
1997-01-16$1.75$1.81596,400——
1997-01-15$1.74$1.791,170,000——
1997-01-14$1.79$1.85988,800——
1997-01-13$1.82$1.88789,600——
1997-01-10$1.83$1.89878,400——
1997-01-09$1.83$1.89639,600——
1997-01-08$1.83$1.89333,600——
1997-01-07$1.83$1.89392,400——
1997-01-06$1.83$1.89636,000——
1997-01-03$1.90$1.96649,200——
1997-01-02$1.83$1.89241,200——