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.

View year

Historical Stock Price — 2009

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2009-12-31$17.52$19.241,070,900
2009-12-30$17.78$19.43773,200
2009-12-29$17.72$19.37729,200
2009-12-28$17.76$19.41475,800
2009-12-24$17.79$19.44219,200
2009-12-23$17.65$19.29641,800
2009-12-22$17.69$19.33806,500
2009-12-21$17.55$19.181,016,300
2009-12-18$17.44$19.061,569,000
2009-12-17$17.65$19.29831,700
2009-12-16$17.90$19.561,149,100
2009-12-15$17.65$19.291,192,600
2009-12-14$17.83$19.491,107,400
2009-12-11$17.58$19.21924,000
2009-12-10$17.52$19.151,141,600
2009-12-09$17.55$19.181,441,000
2009-12-08$17.37$18.98866,400
2009-12-07$17.63$19.271,189,000
2009-12-04$17.63$19.271,671,300
2009-12-03$17.43$19.051,164,300
2009-12-02$17.63$19.271,332,800
2009-12-01$17.65$19.291,532,400
2009-11-30$17.51$19.141,129,300
2009-11-27$17.44$19.06672,700
2009-11-25$17.84$19.50771,300
2009-11-24$17.76$19.41960,500
2009-11-23$17.84$19.50710,500
2009-11-20$17.66$19.30877,900
2009-11-19$17.78$19.431,287,500
2009-11-18$17.93$19.60673,800
2009-11-17$18.06$19.74628,300
2009-11-16$18.10$19.781,006,600
2009-11-13$18.03$19.701,153,500
2009-11-12$18.00$19.67927,000
2009-11-11$18.23$19.92870,000
2009-11-10$18.18$19.87845,800
2009-11-09$18.34$20.04903,600
2009-11-06$18.05$19.731,278,600
2009-11-05$18.06$19.741,906,900
2009-11-04$17.65$19.291,856,300
2009-11-03$17.42$19.041,050,600
2009-11-02$17.38$18.991,774,100
2009-10-30$17.47$19.092,318,000
2009-10-29$17.49$19.111,279,600
2009-10-28$17.26$18.861,697,300
2009-10-27$17.77$19.42965,200
2009-10-26$17.99$19.661,511,000
2009-10-23$18.33$20.031,169,300
2009-10-22$18.80$20.551,479,000
2009-10-21$18.67$20.401,492,600
2009-10-20$19.53$21.34920,100
2009-10-19$19.72$21.55844,300
2009-10-16$19.44$21.251,201,500
2009-10-15$20.06$21.921,255,600
2009-10-14$20.26$22.141,368,300
2009-10-13$19.81$21.65764,200
2009-10-12$20.09$21.96523,200
2009-10-09$20.07$21.93892,300
2009-10-08$19.89$21.741,370,900
2009-10-07$19.94$21.79688,600
2009-10-06$19.69$21.521,064,100
2009-10-05$19.06$20.83933,400
2009-10-02$18.80$20.55953,200
2009-10-01$19.03$20.80847,800
2009-09-30$19.68$21.51981,600
2009-09-29$19.80$21.64838,900
2009-09-28$19.81$21.65852,200
2009-09-25$19.35$21.15995,700
2009-09-24$19.44$21.25867,800
2009-09-23$19.50$21.31812,200
2009-09-22$19.66$21.49711,500
2009-09-21$19.49$21.301,055,700
2009-09-18$19.26$21.051,797,800
2009-09-17$18.90$20.66796,100
2009-09-16$18.99$20.75607,200
2009-09-15$18.60$20.33759,100
2009-09-14$18.90$20.66748,700
2009-09-11$18.58$20.31611,800
2009-09-10$18.60$20.33741,800
2009-09-09$18.58$20.31611,600
2009-09-08$18.49$20.21749,600
2009-09-04$18.25$19.95522,500
2009-09-03$18.24$19.93781,700
2009-09-02$18.20$19.891,183,100
2009-09-01$18.32$20.021,498,900
2009-08-31$18.44$20.15905,100
2009-08-28$18.72$20.46534,600
2009-08-27$18.80$20.551,230,400
2009-08-26$18.83$20.581,066,900
2009-08-25$18.94$20.70951,900
2009-08-24$18.91$20.67560,200
2009-08-21$18.99$20.75559,700
2009-08-20$18.68$20.42999,200
2009-08-19$18.70$20.44354,100
2009-08-18$18.67$20.40591,500
2009-08-17$18.57$20.30811,900
2009-08-14$19.08$20.85661,700
2009-08-13$19.22$21.01540,900
2009-08-12$19.18$20.96804,900
2009-08-11$19.05$20.82986,100
2009-08-10$19.25$21.04689,200
2009-08-07$19.10$20.87723,200
2009-08-06$18.80$20.55780,500
2009-08-05$19.00$20.761,012,000
2009-08-04$18.92$20.681,899,200
2009-08-03$19.25$21.041,544,300
2009-07-31$18.90$20.66765,300
2009-07-30$19.16$20.94711,300
2009-07-29$18.94$20.70953,400
2009-07-28$19.21$20.99977,600
2009-07-27$19.15$20.931,256,200
2009-07-24$18.49$20.21736,700
2009-07-23$18.58$20.311,527,900
2009-07-22$18.44$20.151,105,400
2009-07-21$18.45$20.161,486,000
2009-07-20$18.12$19.801,168,800
2009-07-17$17.95$19.621,174,000
2009-07-16$18.03$19.701,559,600
2009-07-15$18.09$19.772,264,900
2009-07-14$17.41$19.031,200,200
2009-07-13$17.44$19.061,260,300
2009-07-10$16.90$18.471,126,200
2009-07-09$16.91$18.48841,700
2009-07-08$16.84$18.401,946,600
2009-07-07$16.95$18.521,126,000
2009-07-06$17.61$19.251,850,800
2009-07-02$17.66$19.302,111,000
2009-07-01$18.03$19.701,283,500
2009-06-30$18.04$19.722,594,700
2009-06-29$17.78$19.431,618,600
2009-06-26$17.75$19.402,846,200
2009-06-25$17.62$19.261,951,100
2009-06-24$17.54$19.171,823,600
2009-06-23$17.08$18.671,315,900
2009-06-22$16.68$18.231,870,200
2009-06-19$17.63$19.272,165,800
2009-06-18$17.60$19.231,450,500
2009-06-17$17.54$19.171,497,200
2009-06-16$17.66$19.301,990,100
2009-06-15$18.17$19.772,687,700
2009-06-12$18.50$20.131,348,600
2009-06-11$18.34$19.961,730,900
2009-06-10$18.09$19.681,930,400
2009-06-09$17.75$19.311,900,500
2009-06-08$17.16$18.671,679,700
2009-06-05$17.46$19.002,123,000
2009-06-04$16.69$18.161,192,700
2009-06-03$16.35$17.79764,400
2009-06-02$16.40$17.84971,700
2009-06-01$16.26$17.691,606,600
2009-05-29$15.43$16.791,506,000
2009-05-28$15.12$16.451,514,700
2009-05-27$14.66$15.951,974,500
2009-05-26$15.29$16.641,631,900
2009-05-22$14.82$16.131,049,700
2009-05-21$14.92$16.23957,700
2009-05-20$14.94$16.261,514,600
2009-05-19$15.25$16.591,199,400
2009-05-18$15.72$17.101,700,100
2009-05-15$14.76$16.061,809,400
2009-05-14$14.96$16.281,546,100
2009-05-13$14.56$15.841,927,700
2009-05-12$15.27$16.611,963,000
2009-05-11$15.10$16.431,786,800
2009-05-08$15.66$17.041,989,800
2009-05-07$14.76$16.062,219,500
2009-05-06$15.50$16.872,284,200
2009-05-05$14.90$16.211,805,200
2009-05-04$15.05$16.382,667,800
2009-05-01$14.14$15.391,138,900
2009-04-30$14.03$15.271,879,900
2009-04-29$14.29$15.551,598,700
2009-04-28$13.90$15.121,350,600
2009-04-27$13.93$15.162,840,900
2009-04-24$14.07$15.313,141,200
2009-04-23$15.06$16.392,011,700
2009-04-22$14.52$15.801,995,700
2009-04-21$14.86$16.172,093,700
2009-04-20$14.26$15.522,022,300
2009-04-17$14.92$16.231,454,300
2009-04-16$15.11$16.441,723,000
2009-04-15$14.70$15.992,038,800
2009-04-14$13.94$15.171,749,400
2009-04-13$14.46$15.731,722,500
2009-04-09$14.25$15.512,292,700
2009-04-08$13.08$14.231,034,000
2009-04-07$12.89$14.031,435,600
2009-04-06$13.51$14.701,881,900
2009-04-03$13.59$14.791,488,100
2009-04-02$13.29$14.462,497,100
2009-04-01$12.49$13.592,015,200
2009-03-31$12.21$13.292,124,700
2009-03-30$11.75$12.781,805,800
2009-03-27$12.34$13.431,453,800
2009-03-26$12.61$13.722,142,400
2009-03-25$12.20$13.272,236,700
2009-03-24$11.56$12.582,916,500
2009-03-23$11.88$12.931,943,700
2009-03-20$10.76$11.711,890,500
2009-03-19$11.36$12.362,412,300
2009-03-18$11.86$12.902,846,100
2009-03-17$11.39$12.391,362,600
2009-03-16$10.68$11.621,623,300
2009-03-13$10.92$11.881,254,600
2009-03-12$10.88$11.841,818,100
2009-03-11$10.47$11.391,697,200
2009-03-10$10.38$11.292,509,700
2009-03-09$9.45$10.282,102,500
2009-03-06$9.80$10.663,671,900
2009-03-05$10.59$11.521,572,300
2009-03-04$11.25$12.241,971,400
2009-03-03$11.06$12.031,937,200
2009-03-02$11.11$12.092,626,100
2009-02-27$11.84$12.882,120,800
2009-02-26$11.97$13.021,637,700
2009-02-25$12.14$13.212,201,000
2009-02-24$12.38$13.473,757,000
2009-02-23$11.80$12.842,588,900
2009-02-20$12.07$13.133,031,900
2009-02-19$12.42$13.511,182,700
2009-02-18$12.80$13.931,474,700
2009-02-17$12.96$14.101,653,400
2009-02-13$13.50$14.691,944,300
2009-02-12$13.77$14.981,925,500
2009-02-11$13.88$15.101,863,700
2009-02-10$13.61$14.812,103,000
2009-02-09$14.67$15.96854,900
2009-02-06$14.68$15.971,737,200
2009-02-05$14.32$15.581,957,300
2009-02-04$13.72$14.931,982,700
2009-02-03$13.27$14.441,315,500
2009-02-02$12.88$14.011,689,900
2009-01-30$12.67$13.791,760,600
2009-01-29$12.71$13.831,233,600
2009-01-28$13.99$15.222,160,000
2009-01-27$13.05$14.201,265,500
2009-01-26$12.87$14.001,418,100
2009-01-23$13.25$14.421,116,100
2009-01-22$12.76$13.882,263,300
2009-01-21$12.98$14.123,648,900
2009-01-20$12.59$13.703,141,800
2009-01-16$13.57$14.771,411,400
2009-01-15$13.62$14.821,321,000
2009-01-14$13.46$14.651,071,800
2009-01-13$14.43$15.70847,400
2009-01-12$14.15$15.40761,500
2009-01-09$14.70$15.99792,300
2009-01-08$15.24$16.581,395,300
2009-01-07$15.33$16.68960,200
2009-01-06$15.94$17.341,116,600
2009-01-05$15.65$17.031,035,400
2009-01-02$16.08$17.50864,000