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 — 1990

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1990-12-31$0.90$0.91578,400
1990-12-28$0.91$0.921,252,800
1990-12-27$0.89$0.90201,600
1990-12-26$0.89$0.90362,400
1990-12-24$0.87$0.88422,400
1990-12-21$0.86$0.88292,800
1990-12-20$0.86$0.88463,200
1990-12-19$0.91$0.9231,200
1990-12-18$0.89$0.90112,800
1990-12-17$0.86$0.872,368,800
1990-12-14$0.86$0.87547,200
1990-12-13$0.86$0.8874,400
1990-12-12$0.86$0.87583,200
1990-12-11$0.83$0.8498,400
1990-12-10$0.83$0.84268,800
1990-12-07$0.82$0.832,755,200
1990-12-06$0.79$0.801,610,400
1990-12-05$0.76$0.77254,400
1990-12-04$0.77$0.7852,800
1990-12-03$0.76$0.76832,800
1990-11-30$0.75$0.7691,200
1990-11-29$0.74$0.75688,800
1990-11-28$0.75$0.76127,200
1990-11-27$0.74$0.75952,800
1990-11-26$0.71$0.72830,400
1990-11-23$0.70$0.7133,600
1990-11-21$0.70$0.71230,400
1990-11-20$0.70$0.711,507,200
1990-11-19$0.68$0.69297,600
1990-11-16$0.68$0.691,248,000
1990-11-15$0.68$0.69770,400
1990-11-14$0.70$0.71432,000
1990-11-13$0.70$0.71568,800
1990-11-12$0.69$0.700
1990-11-09$0.69$0.70105,600
1990-11-08$0.67$0.681,104,000
1990-11-07$0.67$0.681,248,000
1990-11-06$0.67$0.682,443,200
1990-11-05$0.69$0.70969,600
1990-11-02$0.67$0.680
1990-11-01$0.67$0.682,400
1990-10-31$0.67$0.68513,600
1990-10-30$0.67$0.6860,000
1990-10-29$0.67$0.68400,800
1990-10-26$0.68$0.691,082,400
1990-10-25$0.68$0.69216,000
1990-10-24$0.69$0.70520,800
1990-10-23$0.65$0.6596,000
1990-10-22$0.65$0.6531,200
1990-10-19$0.65$0.6674,400
1990-10-18$0.65$0.65487,200
1990-10-17$0.64$0.644,800
1990-10-16$0.64$0.64345,600
1990-10-15$0.64$0.640
1990-10-12$0.64$0.64242,400
1990-10-11$0.64$0.64996,000
1990-10-10$0.63$0.6333,600
1990-10-09$0.64$0.647,200
1990-10-08$0.66$0.66516,000
1990-10-05$0.63$0.631,248,000
1990-10-04$0.65$0.6688,800
1990-10-03$0.65$0.65100,800
1990-10-02$0.66$0.662,400
1990-10-01$0.61$0.62292,800
1990-09-28$0.64$0.641,420,800
1990-09-27$0.61$0.6291,200
1990-09-26$0.63$0.63727,200
1990-09-25$0.69$0.70969,600
1990-09-24$0.66$0.664,800
1990-09-21$0.67$0.68129,600
1990-09-20$0.67$0.68504,000
1990-09-19$0.68$0.694,800
1990-09-18$0.68$0.692,400
1990-09-17$0.70$0.71120,000
1990-09-14$0.69$0.7024,000
1990-09-13$0.70$0.712,400
1990-09-12$0.72$0.730
1990-09-11$0.72$0.7372,000
1990-09-10$0.74$0.750
1990-09-07$0.74$0.75664,800
1990-09-06$0.75$0.767,200
1990-09-05$0.75$0.764,800
1990-09-04$0.77$0.7812,000
1990-08-31$0.77$0.7893,600
1990-08-30$0.80$0.817,200
1990-08-29$0.80$0.814,800
1990-08-28$0.76$0.7779,200
1990-08-27$0.77$0.78676,800
1990-08-24$0.71$0.721,336,800
1990-08-23$0.71$0.72244,800
1990-08-22$0.77$0.78384,000
1990-08-21$0.77$0.78256,800
1990-08-20$0.78$0.79110,400
1990-08-17$0.78$0.79153,600
1990-08-16$0.83$0.84132,000
1990-08-15$0.82$0.8312,000
1990-08-14$0.81$0.8238,400
1990-08-13$0.85$0.8619,200
1990-08-10$0.84$0.85141,600
1990-08-09$0.83$0.8493,600
1990-08-08$0.79$0.80100,800
1990-08-07$0.79$0.80686,400
1990-08-06$0.80$0.81480,000
1990-08-03$0.81$0.82144,000
1990-08-02$0.82$0.83177,600
1990-08-01$0.84$0.85163,200
1990-07-31$0.86$0.88607,200
1990-07-30$0.85$0.86528,000
1990-07-27$0.85$0.86712,800
1990-07-26$0.86$0.88511,200
1990-07-25$0.92$0.93194,400
1990-07-24$0.90$0.91765,600
1990-07-23$0.86$0.88314,400
1990-07-20$0.89$0.90400,800
1990-07-19$0.83$0.84969,600
1990-07-18$0.85$0.86460,800
1990-07-17$0.90$0.91748,800
1990-07-16$0.88$0.89184,800
1990-07-13$0.90$0.91374,400
1990-07-12$0.89$0.90878,400
1990-07-11$0.90$0.912,397,600
1990-07-10$0.90$0.91588,000
1990-07-09$0.85$0.8631,200
1990-07-06$0.89$0.9028,800
1990-07-05$0.89$0.90650,400
1990-07-03$0.88$0.89271,200
1990-07-02$0.88$0.89206,400
1990-06-29$0.86$0.88573,600
1990-06-28$0.86$0.87252,000
1990-06-27$0.85$0.86206,400
1990-06-26$0.84$0.85309,600
1990-06-25$0.83$0.84415,200
1990-06-22$0.83$0.84451,200
1990-06-21$0.84$0.85753,600
1990-06-20$0.83$0.8472,000
1990-06-19$0.84$0.85902,400
1990-06-18$0.82$0.83218,400
1990-06-15$0.85$0.86117,600
1990-06-14$0.82$0.83727,200
1990-06-13$0.85$0.86120,000
1990-06-12$0.82$0.8321,600
1990-06-11$0.84$0.85105,600
1990-06-08$0.82$0.8333,600
1990-06-07$0.82$0.83290,400
1990-06-06$0.83$0.84393,600
1990-06-05$0.83$0.8457,600
1990-06-04$0.82$0.83844,800
1990-06-01$0.82$0.8328,800
1990-05-31$0.82$0.8326,400
1990-05-30$0.84$0.854,332,000
1990-05-29$0.84$0.8512,000
1990-05-25$0.83$0.843,220,800
1990-05-24$0.82$0.832,059,200
1990-05-23$0.80$0.811,032,000
1990-05-22$0.80$0.812,047,200
1990-05-21$0.82$0.83787,200
1990-05-18$0.84$0.85876,000
1990-05-17$0.84$0.852,988,000
1990-05-16$0.82$0.83364,800
1990-05-15$0.84$0.851,152,000
1990-05-14$0.84$0.85441,600
1990-05-11$0.83$0.84112,800
1990-05-10$0.83$0.84163,200
1990-05-09$0.82$0.8314,400
1990-05-08$0.82$0.8333,600
1990-05-07$0.83$0.84703,200
1990-05-04$0.82$0.83518,400
1990-05-03$0.82$0.832,162,400
1990-05-02$0.82$0.83156,000
1990-05-01$0.83$0.84232,800
1990-04-30$0.81$0.821,252,800
1990-04-27$0.81$0.8257,600
1990-04-26$0.80$0.81295,200
1990-04-25$0.80$0.811,262,400
1990-04-24$0.78$0.79892,800
1990-04-23$0.78$0.78340,800
1990-04-20$0.77$0.788,001,600
1990-04-19$0.78$0.79393,600
1990-04-18$0.78$0.781,075,200
1990-04-17$0.78$0.791,778,400
1990-04-16$0.77$0.78712,800
1990-04-12$0.78$0.79110,400
1990-04-11$0.76$0.77220,800
1990-04-10$0.75$0.7662,400
1990-04-09$0.75$0.76660,000
1990-04-06$0.77$0.77991,200
1990-04-05$0.75$0.762,028,000
1990-04-04$0.74$0.7545,600
1990-04-03$0.75$0.761,548,000
1990-04-02$0.74$0.752,988,000
1990-03-30$0.76$0.77626,400
1990-03-29$0.75$0.76374,400
1990-03-28$0.76$0.7764,800
1990-03-27$0.77$0.78578,400
1990-03-26$0.78$0.79139,200
1990-03-23$0.79$0.801,284,000
1990-03-22$0.78$0.781,708,800
1990-03-21$0.79$0.80204,000
1990-03-20$0.78$0.791,027,200
1990-03-19$0.76$0.771,788,000
1990-03-16$0.77$0.7864,800
1990-03-15$0.77$0.78597,600
1990-03-14$0.76$0.77727,200
1990-03-13$0.69$0.7062,400
1990-03-12$0.71$0.72276,000
1990-03-09$0.68$0.68302,400
1990-03-08$0.68$0.680
1990-03-07$0.68$0.68228,000
1990-03-06$0.68$0.68736,800
1990-03-05$0.65$0.651,605,600
1990-03-02$0.66$0.66556,800
1990-03-01$0.65$0.6514,400
1990-02-28$0.67$0.67688,800
1990-02-27$0.65$0.6586,400
1990-02-26$0.66$0.66432,000
1990-02-23$0.66$0.6676,800
1990-02-22$0.67$0.671,202,400
1990-02-21$0.65$0.65122,400
1990-02-20$0.67$0.67139,200
1990-02-16$0.68$0.68175,200
1990-02-15$0.68$0.69626,400
1990-02-14$0.65$0.65345,600
1990-02-13$0.67$0.6740,800
1990-02-12$0.66$0.66127,200
1990-02-09$0.68$0.68156,000
1990-02-08$0.68$0.681,449,600
1990-02-07$0.61$0.62837,600
1990-02-06$0.61$0.62504,000
1990-02-05$0.63$0.63816,000
1990-02-02$0.65$0.65924,000
1990-02-01$0.66$0.664,800
1990-01-31$0.64$0.64201,600
1990-01-30$0.65$0.652,078,400
1990-01-29$0.63$0.641,852,800
1990-01-26$0.67$0.67470,400
1990-01-25$0.71$0.72256,800
1990-01-24$0.71$0.72163,200
1990-01-23$0.72$0.731,560,000
1990-01-22$0.77$0.78328,800
1990-01-19$0.76$0.7762,400
1990-01-18$0.76$0.77103,200
1990-01-17$0.76$0.7712,000
1990-01-16$0.76$0.77530,400
1990-01-15$0.77$0.78357,600
1990-01-12$0.76$0.77408,000
1990-01-11$0.78$0.79410,400
1990-01-10$0.78$0.79177,600
1990-01-09$0.79$0.80386,400
1990-01-08$0.77$0.77542,400
1990-01-05$0.76$0.77964,800
1990-01-04$0.76$0.762,056,800
1990-01-03$0.73$0.74612,000
1990-01-02$0.74$0.75304,800