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 — 2017

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2017-12-29$71.86$87.98397,400
2017-12-28$72.07$88.24509,600
2017-12-27$71.82$87.93482,200
2017-12-26$72.06$88.23383,600
2017-12-22$72.01$87.80247,900
2017-12-21$71.84$87.59477,900
2017-12-20$71.59$87.29421,000
2017-12-19$71.80$87.54488,400
2017-12-18$71.78$87.52514,700
2017-12-15$71.58$87.271,638,000
2017-12-14$70.67$86.16531,100
2017-12-13$70.96$86.52528,400
2017-12-12$71.12$86.71662,000
2017-12-11$71.15$86.75435,300
2017-12-08$71.22$86.84593,300
2017-12-07$70.70$86.20639,300
2017-12-06$70.53$85.99326,700
2017-12-05$70.08$85.45513,800
2017-12-04$70.18$85.57590,200
2017-12-01$70.19$85.58387,400
2017-11-30$70.36$85.79800,900
2017-11-29$69.78$85.08496,900
2017-11-28$69.52$84.76570,700
2017-11-27$68.42$83.42413,500
2017-11-24$68.48$83.49243,200
2017-11-22$68.55$83.58476,800
2017-11-21$68.59$83.63512,200
2017-11-20$67.67$82.51335,000
2017-11-17$67.10$81.81818,400
2017-11-16$66.40$80.96565,800
2017-11-15$65.59$79.97600,300
2017-11-14$64.91$79.14433,400
2017-11-13$64.67$78.85449,700
2017-11-10$64.68$78.86537,700
2017-11-09$64.73$78.92448,000
2017-11-08$65.11$79.39595,500
2017-11-07$65.13$79.41546,800
2017-11-06$65.75$80.17419,800
2017-11-03$64.91$79.14298,100
2017-11-02$64.60$78.76415,900
2017-11-01$64.38$78.50432,900
2017-10-31$64.51$78.65674,500
2017-10-30$64.11$78.17527,500
2017-10-27$64.45$78.58427,200
2017-10-26$64.87$79.091,346,600
2017-10-25$62.80$76.57606,200
2017-10-24$63.50$77.421,151,900
2017-10-23$62.68$76.42770,200
2017-10-20$63.70$77.67335,500
2017-10-19$63.19$77.04321,900
2017-10-18$63.48$77.40403,700
2017-10-17$63.32$77.20362,000
2017-10-16$63.72$77.69427,800
2017-10-13$63.41$77.31538,100
2017-10-12$63.93$77.95327,600
2017-10-11$63.55$77.48337,600
2017-10-10$63.37$77.26353,000
2017-10-09$62.81$76.58438,200
2017-10-06$62.78$76.54490,100
2017-10-05$62.66$76.40502,400
2017-10-04$62.53$76.24456,900
2017-10-03$62.56$76.28725,800
2017-10-02$61.46$74.94402,800
2017-09-29$61.06$74.45667,800
2017-09-28$61.51$75.00611,900
2017-09-27$61.31$74.75638,000
2017-09-26$60.21$73.41799,400
2017-09-25$59.70$72.79404,800
2017-09-22$59.69$72.78311,000
2017-09-21$59.34$72.35397,700
2017-09-20$59.07$72.02407,900
2017-09-19$58.69$71.56485,300
2017-09-18$57.95$70.66439,400
2017-09-15$57.58$70.20807,200
2017-09-14$57.21$69.75561,300
2017-09-13$57.05$69.56430,300
2017-09-12$57.34$69.91556,900
2017-09-11$56.82$69.28510,300
2017-09-08$56.18$68.50473,800
2017-09-07$56.16$68.47535,100
2017-09-06$56.20$68.52599,700
2017-09-05$56.60$69.01561,000
2017-09-01$57.74$70.40410,300
2017-08-31$58.46$71.28639,800
2017-08-30$57.69$70.34358,800
2017-08-29$57.18$69.72438,200
2017-08-28$57.20$69.74423,500
2017-08-25$57.18$69.72292,800
2017-08-24$57.03$69.53303,300
2017-08-23$56.91$69.39352,600
2017-08-22$56.90$69.38325,600
2017-08-21$55.77$68.00227,200
2017-08-18$55.82$68.06593,900
2017-08-17$55.70$67.91432,600
2017-08-16$56.65$69.07220,900
2017-08-15$56.93$69.41323,400
2017-08-14$56.83$69.29384,600
2017-08-11$55.71$67.92334,300
2017-08-10$55.46$67.62400,800
2017-08-09$56.11$68.41300,800
2017-08-08$56.18$68.50298,800
2017-08-07$56.40$68.77266,800
2017-08-04$56.00$68.28235,400
2017-08-03$56.08$68.38289,600
2017-08-02$56.20$68.52319,200
2017-08-01$56.59$69.00475,300
2017-07-31$56.51$68.90896,300
2017-07-28$56.14$68.45390,000
2017-07-27$55.51$67.681,121,500
2017-07-26$56.60$69.01744,600
2017-07-25$57.21$69.75812,800
2017-07-24$56.54$68.94447,800
2017-07-21$55.82$68.06236,900
2017-07-20$56.00$68.28465,900
2017-07-19$55.92$68.18315,600
2017-07-18$55.70$67.91322,200
2017-07-17$55.31$67.44261,500
2017-07-14$55.82$68.06486,500
2017-07-13$55.45$67.61431,500
2017-07-12$55.04$67.11608,900
2017-07-11$54.77$66.78926,200
2017-07-10$54.46$66.40980,100
2017-07-07$54.08$65.94536,400
2017-07-06$53.38$65.08397,000
2017-07-05$54.09$65.95790,400
2017-07-03$53.63$65.39352,200
2017-06-30$53.78$65.57487,700
2017-06-29$53.73$65.51546,600
2017-06-28$54.20$66.08594,400
2017-06-27$52.89$64.49302,600
2017-06-26$53.16$64.82477,200
2017-06-23$53.02$64.641,352,600
2017-06-22$52.82$64.40495,600
2017-06-21$53.28$64.96445,100
2017-06-20$53.47$65.19419,800
2017-06-19$54.07$65.93489,000
2017-06-16$54.26$66.161,047,900
2017-06-15$54.11$65.97591,200
2017-06-14$54.08$65.94849,000
2017-06-13$53.65$65.41835,900
2017-06-12$52.80$64.38740,200
2017-06-09$52.03$63.44739,900
2017-06-08$51.58$62.89580,400
2017-06-07$51.49$62.78437,800
2017-06-06$51.35$62.61382,400
2017-06-05$51.68$63.01408,800
2017-06-02$51.42$62.35523,200
2017-06-01$51.17$62.05550,600
2017-05-31$50.09$60.74740,200
2017-05-30$49.75$60.33349,800
2017-05-26$50.15$60.81281,900
2017-05-25$50.31$61.01372,800
2017-05-24$49.84$60.44335,500
2017-05-23$49.93$60.55444,100
2017-05-22$50.02$60.65711,900
2017-05-19$50.08$60.73398,400
2017-05-18$49.80$60.39610,000
2017-05-17$49.64$60.19774,800
2017-05-16$51.30$62.21526,600
2017-05-15$51.39$62.32384,400
2017-05-12$51.18$62.06296,400
2017-05-11$51.34$62.26357,200
2017-05-10$51.43$62.36353,500
2017-05-09$51.04$61.89276,200
2017-05-08$51.35$62.27324,500
2017-05-05$51.41$62.34385,500
2017-05-04$51.14$62.01505,600
2017-05-03$50.40$61.12633,800
2017-05-02$50.49$61.22835,100
2017-05-01$50.67$61.44974,700
2017-04-28$50.71$61.49686,000
2017-04-27$50.92$61.75588,100
2017-04-26$50.88$61.70799,400
2017-04-25$50.80$61.60761,300
2017-04-24$51.00$61.84930,900
2017-04-21$50.10$60.751,043,700
2017-04-20$51.05$61.901,618,400
2017-04-19$52.12$63.20597,500
2017-04-18$52.14$63.23926,000
2017-04-17$52.05$63.12576,700
2017-04-13$51.33$62.24713,400
2017-04-12$51.22$62.11501,600
2017-04-11$51.77$62.78863,700
2017-04-10$50.94$61.77399,000
2017-04-07$50.79$61.59354,400
2017-04-06$50.83$61.64406,100
2017-04-05$50.50$61.241,038,200
2017-04-04$50.01$60.641,163,800
2017-04-03$49.85$60.45623,000
2017-03-31$50.44$61.16687,600
2017-03-30$50.28$60.97810,900
2017-03-29$50.37$61.08507,600
2017-03-28$50.63$61.39553,700
2017-03-27$50.10$60.75862,400
2017-03-24$50.35$61.06894,000
2017-03-23$50.70$61.48399,900
2017-03-22$50.89$61.71548,400
2017-03-21$50.76$61.55720,300
2017-03-20$52.16$63.25473,900
2017-03-17$52.25$63.361,020,600
2017-03-16$52.20$63.30462,700
2017-03-15$51.96$63.01674,500
2017-03-14$52.24$63.35550,300
2017-03-13$52.13$63.21590,800
2017-03-10$51.68$62.67454,200
2017-03-09$51.24$62.13502,900
2017-03-08$51.09$61.95365,100
2017-03-07$50.94$61.77505,200
2017-03-06$51.00$61.84405,000
2017-03-03$51.32$62.23571,200
2017-03-02$50.85$61.66457,500
2017-03-01$51.38$62.30647,800
2017-02-28$50.35$61.061,452,200
2017-02-27$51.12$61.99573,500
2017-02-24$50.94$61.77379,000
2017-02-23$50.56$61.31536,000
2017-02-22$50.59$61.35639,500
2017-02-21$50.18$60.85674,900
2017-02-17$50.49$61.22310,700
2017-02-16$50.30$60.99463,100
2017-02-15$50.32$61.02818,100
2017-02-14$49.45$59.96619,400
2017-02-13$49.54$60.07700,700
2017-02-10$49.62$60.17428,900
2017-02-09$49.16$59.61534,500
2017-02-08$48.24$58.50906,200
2017-02-07$48.79$59.16617,100
2017-02-06$49.11$59.55396,400
2017-02-03$49.09$59.53878,600
2017-02-02$48.68$59.03636,200
2017-02-01$48.53$58.85568,100
2017-01-31$48.51$58.821,166,900
2017-01-30$48.82$59.20627,500
2017-01-27$49.05$59.48882,900
2017-01-26$49.28$59.76840,700
2017-01-25$51.10$61.96725,000
2017-01-24$50.92$61.75711,700
2017-01-23$49.90$60.51440,600
2017-01-20$50.23$60.91404,400
2017-01-19$50.04$60.68377,200
2017-01-18$50.78$61.58412,800
2017-01-17$50.49$61.22497,700
2017-01-13$51.66$62.64411,800
2017-01-12$51.30$62.21513,800
2017-01-11$51.61$62.58405,800
2017-01-10$51.38$62.30570,600
2017-01-09$51.20$62.09552,500
2017-01-06$50.73$61.52311,800
2017-01-05$50.31$61.01538,100
2017-01-04$50.81$61.61619,900
2017-01-03$50.23$60.91696,600