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 — 2011

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2011-12-30$17.35$19.50569,900
2011-12-29$17.17$19.30363,800
2011-12-28$16.85$18.94597,900
2011-12-27$17.36$19.51652,000
2011-12-23$17.30$19.45550,000
2011-12-22$17.29$19.27972,100
2011-12-21$16.77$18.69708,600
2011-12-20$16.79$18.71804,300
2011-12-19$15.98$17.81895,600
2011-12-16$16.37$18.241,520,400
2011-12-15$16.01$17.84866,100
2011-12-14$15.81$17.621,263,400
2011-12-13$15.77$17.571,010,500
2011-12-12$16.12$17.96877,900
2011-12-09$16.78$18.70641,000
2011-12-08$16.14$17.991,010,300
2011-12-07$16.75$18.67858,700
2011-12-06$16.76$18.68729,600
2011-12-05$16.74$18.651,290,600
2011-12-02$16.66$18.561,287,800
2011-12-01$16.71$18.621,219,100
2011-11-30$16.80$18.722,331,000
2011-11-29$15.68$17.471,328,400
2011-11-28$15.54$17.32933,700
2011-11-25$15.21$16.95258,000
2011-11-23$15.19$16.93916,200
2011-11-22$15.30$17.05644,300
2011-11-21$15.42$17.18858,200
2011-11-18$15.82$17.631,009,900
2011-11-17$15.97$17.801,294,600
2011-11-16$15.98$17.81767,400
2011-11-15$16.34$18.21615,100
2011-11-14$16.13$17.97671,100
2011-11-11$16.31$18.17542,500
2011-11-10$15.95$17.77883,300
2011-11-09$15.89$17.71903,100
2011-11-08$16.85$18.78724,700
2011-11-07$16.70$18.61679,500
2011-11-04$16.50$18.39876,600
2011-11-03$16.47$18.351,125,500
2011-11-02$15.93$17.75998,500
2011-11-01$15.58$17.361,279,200
2011-10-31$16.19$18.04859,700
2011-10-28$16.94$18.881,049,100
2011-10-27$16.94$18.881,266,800
2011-10-26$15.71$17.512,525,600
2011-10-25$15.78$17.581,186,500
2011-10-24$16.35$18.221,258,700
2011-10-21$15.72$17.521,603,400
2011-10-20$15.34$17.092,431,900
2011-10-19$14.44$16.091,985,600
2011-10-18$15.45$17.221,845,400
2011-10-17$15.08$16.80891,800
2011-10-14$15.54$17.32674,300
2011-10-13$15.48$17.25569,400
2011-10-12$15.62$17.41799,900
2011-10-11$15.27$17.02812,400
2011-10-10$15.47$17.24797,000
2011-10-07$14.65$16.32879,900
2011-10-06$15.13$16.861,135,200
2011-10-05$14.95$16.661,070,100
2011-10-04$14.78$16.471,622,200
2011-10-03$14.15$15.771,550,900
2011-09-30$15.38$17.141,200,600
2011-09-29$15.82$17.631,596,200
2011-09-28$15.64$17.431,267,600
2011-09-27$15.99$17.821,190,300
2011-09-26$15.54$17.321,264,100
2011-09-23$15.27$17.021,212,300
2011-09-22$14.93$16.641,542,400
2011-09-21$15.25$16.991,076,600
2011-09-20$15.97$17.801,628,900
2011-09-19$15.84$17.651,686,300
2011-09-16$16.88$18.811,487,900
2011-09-15$16.90$18.83847,600
2011-09-14$16.55$18.441,187,800
2011-09-13$16.26$18.121,054,500
2011-09-12$15.99$17.821,834,000
2011-09-09$15.64$17.431,106,000
2011-09-08$16.20$18.05697,600
2011-09-07$16.68$18.591,251,200
2011-09-06$15.91$17.731,496,100
2011-09-02$16.32$18.191,131,800
2011-09-01$17.01$18.951,593,400
2011-08-31$17.11$19.071,336,900
2011-08-30$17.08$19.031,191,400
2011-08-29$17.06$19.011,025,800
2011-08-26$16.49$18.38717,300
2011-08-25$16.19$18.041,350,200
2011-08-24$16.50$18.393,367,900
2011-08-23$16.28$18.142,206,800
2011-08-22$15.87$17.68924,100
2011-08-19$15.71$17.511,405,300
2011-08-18$16.13$17.971,267,600
2011-08-17$17.14$19.10894,200
2011-08-16$17.28$19.26997,500
2011-08-15$17.48$19.481,540,900
2011-08-12$17.07$19.021,453,500
2011-08-11$17.48$19.482,052,300
2011-08-10$16.49$18.382,238,200
2011-08-09$17.15$19.112,665,300
2011-08-08$16.12$17.962,908,700
2011-08-05$17.76$19.791,319,700
2011-08-04$18.02$20.081,195,200
2011-08-03$19.18$21.371,302,400
2011-08-02$18.96$21.131,572,400
2011-08-01$19.52$21.751,158,200
2011-07-29$19.78$22.041,051,300
2011-07-28$19.81$22.07747,700
2011-07-27$19.89$22.161,537,800
2011-07-26$20.27$22.59825,400
2011-07-25$20.36$22.69961,600
2011-07-22$20.52$22.871,008,600
2011-07-21$20.62$22.982,535,900
2011-07-20$21.34$23.78709,400
2011-07-19$21.29$23.72951,300
2011-07-18$21.17$23.59580,500
2011-07-15$21.83$24.33376,400
2011-07-14$22.05$24.571,278,900
2011-07-13$21.88$24.38575,300
2011-07-12$21.76$24.25737,700
2011-07-11$21.89$24.39573,700
2011-07-08$22.76$25.36487,100
2011-07-07$22.90$25.52445,900
2011-07-06$22.59$25.17596,400
2011-07-05$22.54$25.12648,000
2011-07-01$22.91$25.53731,300
2011-06-30$22.51$25.08945,400
2011-06-29$22.06$24.58784,800
2011-06-28$21.75$24.24470,200
2011-06-27$21.40$23.85911,000
2011-06-24$21.34$23.781,674,900
2011-06-23$21.48$23.94974,800
2011-06-22$21.84$24.34554,100
2011-06-21$22.01$24.53430,600
2011-06-20$21.61$24.08488,400
2011-06-17$21.58$24.05698,100
2011-06-16$21.55$24.011,042,000
2011-06-15$21.81$24.17771,800
2011-06-14$22.23$24.641,154,300
2011-06-13$21.52$23.85615,600
2011-06-10$21.57$23.90839,100
2011-06-09$21.70$24.051,107,300
2011-06-08$21.83$24.19848,800
2011-06-07$22.02$24.40671,400
2011-06-06$22.09$24.48783,100
2011-06-03$22.27$24.681,302,000
2011-06-02$22.47$24.901,794,600
2011-06-01$22.94$25.421,569,500
2011-05-31$23.64$26.202,160,300
2011-05-27$23.18$25.69521,200
2011-05-26$22.87$25.34764,700
2011-05-25$22.77$25.23705,400
2011-05-24$22.60$25.05707,000
2011-05-23$22.48$24.91836,700
2011-05-20$23.02$25.51635,100
2011-05-19$23.34$25.87873,300
2011-05-18$23.26$25.78481,100
2011-05-17$22.93$25.41885,700
2011-05-16$22.73$25.19568,400
2011-05-13$22.93$25.41677,700
2011-05-12$23.09$25.59946,000
2011-05-11$22.52$24.96520,200
2011-05-10$23.02$25.51731,700
2011-05-09$22.56$25.00571,600
2011-05-06$22.34$24.76630,700
2011-05-05$22.35$24.77880,800
2011-05-04$22.43$24.861,214,600
2011-05-03$22.42$24.85814,400
2011-05-02$22.39$24.81750,500
2011-04-29$22.34$24.761,061,300
2011-04-28$22.26$24.671,000,000
2011-04-27$22.19$24.591,856,700
2011-04-26$23.07$25.57782,000
2011-04-25$22.90$25.38360,400
2011-04-21$23.08$25.58568,500
2011-04-20$22.83$25.30755,200
2011-04-19$22.57$25.01489,600
2011-04-18$22.53$24.97748,200
2011-04-15$23.26$25.78347,900
2011-04-14$23.12$25.62464,400
2011-04-13$23.15$25.65724,700
2011-04-12$23.17$25.68853,300
2011-04-11$23.38$25.91627,600
2011-04-08$23.58$26.13598,200
2011-04-07$23.91$26.50432,800
2011-04-06$23.96$26.55387,100
2011-04-05$23.99$26.59894,900
2011-04-04$23.97$26.56713,300
2011-04-01$23.99$26.59668,100
2011-03-31$23.88$26.46661,400
2011-03-30$23.61$26.16563,800
2011-03-29$23.36$25.89463,800
2011-03-28$23.19$25.70483,500
2011-03-25$23.20$25.71657,300
2011-03-24$22.88$25.36842,600
2011-03-23$22.93$25.41488,700
2011-03-22$22.69$25.15591,000
2011-03-21$22.63$25.08423,900
2011-03-18$22.27$24.68617,000
2011-03-17$21.97$24.35446,500
2011-03-16$21.97$24.35863,800
2011-03-15$22.13$24.52714,000
2011-03-14$22.28$24.69750,100
2011-03-11$22.48$24.91490,600
2011-03-10$22.29$24.70907,300
2011-03-09$22.65$25.10664,200
2011-03-08$23.02$25.51664,100
2011-03-07$22.44$24.87711,000
2011-03-04$22.47$24.901,041,700
2011-03-03$22.94$25.42869,100
2011-03-02$22.41$24.83845,200
2011-03-01$22.50$24.931,086,500
2011-02-28$23.01$25.501,009,300
2011-02-25$23.09$25.59757,800
2011-02-24$22.40$24.821,920,700
2011-02-23$22.56$25.001,730,400
2011-02-22$23.06$25.561,099,500
2011-02-18$23.34$25.87950,500
2011-02-17$23.28$25.80898,500
2011-02-16$23.26$25.781,339,400
2011-02-15$23.24$25.75905,100
2011-02-14$23.32$25.84626,500
2011-02-11$23.30$25.82853,300
2011-02-10$23.35$25.88918,000
2011-02-09$23.32$25.84576,700
2011-02-08$23.50$26.04762,800
2011-02-07$23.59$26.14743,300
2011-02-04$23.30$25.82668,200
2011-02-03$23.26$25.78833,100
2011-02-02$23.40$25.93764,900
2011-02-01$23.49$26.03955,700
2011-01-31$23.15$25.651,160,300
2011-01-28$22.76$25.221,950,800
2011-01-27$23.00$25.491,522,500
2011-01-26$23.35$25.882,570,300
2011-01-25$24.43$27.07758,900
2011-01-24$24.20$26.82416,400
2011-01-21$24.16$26.77438,400
2011-01-20$24.19$26.81485,900
2011-01-19$24.33$26.96782,800
2011-01-18$24.74$27.42858,000
2011-01-14$24.61$27.27330,000
2011-01-13$24.37$27.01338,200
2011-01-12$24.52$27.17943,300
2011-01-11$24.17$26.79821,500
2011-01-10$24.07$26.67959,600
2011-01-07$23.79$26.36399,200
2011-01-06$24.00$26.60616,400
2011-01-05$24.00$26.601,322,300
2011-01-04$23.63$26.19547,200
2011-01-03$23.96$26.55678,800