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 — 2020

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2020-12-31$57.47$72.98323,300——
2020-12-30$56.84$72.18260,400——
2020-12-29$56.34$71.54311,200——
2020-12-28$56.68$71.98357,800——
2020-12-24$56.51$71.76190,700——
2020-12-23$56.49$71.73447,500——
2020-12-22$55.89$70.97297,500——
2020-12-21$56.11$71.25558,600——
2020-12-18$56.16$71.321,725,600——
2020-12-17$56.80$71.66507,500——
2020-12-16$56.86$71.73537,600——
2020-12-15$56.57$71.37476,900——
2020-12-14$55.49$70.01680,300——
2020-12-11$56.32$71.05643,400——
2020-12-10$56.81$71.67633,700——
2020-12-09$56.58$71.38511,600——
2020-12-08$56.54$71.33393,600——
2020-12-07$55.75$70.33494,800——
2020-12-04$56.62$71.43537,900——
2020-12-03$55.18$69.61437,800——
2020-12-02$54.85$69.20639,100——
2020-12-01$54.47$68.72832,200——
2020-11-30$52.75$66.551,490,600——
2020-11-27$55.61$70.16395,500——
2020-11-25$55.75$70.33524,000——
2020-11-24$56.70$71.53425,800——
2020-11-23$54.97$69.35524,300——
2020-11-20$54.36$68.58540,900——
2020-11-19$54.29$68.49478,600——
2020-11-18$54.80$69.14452,800——
2020-11-17$55.43$69.93504,900——
2020-11-16$55.94$70.57472,600——
2020-11-13$55.12$69.54350,600——
2020-11-12$54.19$68.37568,800——
2020-11-11$55.07$69.48456,400——
2020-11-10$55.42$69.92675,700——
2020-11-09$55.85$70.46669,700——
2020-11-06$52.70$66.49432,000——
2020-11-05$52.71$66.50323,900——
2020-11-04$51.59$65.09485,000——
2020-11-03$50.95$64.28403,500——
2020-11-02$49.56$62.52552,700——
2020-10-30$49.15$62.01866,700——
2020-10-29$49.77$62.79684,600——
2020-10-28$49.87$62.92883,200——
2020-10-27$49.83$62.87723,800——
2020-10-26$50.14$63.26586,200——
2020-10-23$52.03$65.64632,500——
2020-10-22$51.94$65.531,445,100——
2020-10-21$55.69$70.26600,900——
2020-10-20$56.75$71.60505,700——
2020-10-19$56.29$71.02553,900——
2020-10-16$55.69$70.26261,600——
2020-10-15$55.90$70.52279,400——
2020-10-14$55.66$70.22248,500——
2020-10-13$56.08$70.75528,800——
2020-10-12$56.02$70.67396,900——
2020-10-09$55.20$69.64420,900——
2020-10-08$55.01$69.40716,100——
2020-10-07$52.94$66.79438,700——
2020-10-06$53.32$67.27698,100——
2020-10-05$53.16$67.07691,800——
2020-10-02$51.75$65.29383,900——
2020-10-01$51.02$64.37393,400——
2020-09-30$50.72$63.99685,900——
2020-09-29$51.07$64.43433,900——
2020-09-28$51.59$65.09501,700——
2020-09-25$51.03$64.38675,800——
2020-09-24$49.63$62.61676,400——
2020-09-23$49.73$62.74824,800——
2020-09-22$50.32$63.48777,500——
2020-09-21$50.44$63.63970,200——
2020-09-18$50.02$63.102,372,700——
2020-09-17$50.08$63.18730,800——
2020-09-16$50.82$64.11729,100——
2020-09-15$50.06$63.16582,300——
2020-09-14$50.31$63.47667,900——
2020-09-11$50.07$63.17558,000——
2020-09-10$50.06$63.16475,100——
2020-09-09$51.10$64.47650,500——
2020-09-08$50.52$63.74764,400——
2020-09-04$51.80$65.35415,700——
2020-09-03$52.09$65.72434,500——
2020-09-02$53.31$67.26345,900——
2020-09-01$52.57$66.32321,900——
2020-08-31$52.36$66.06495,100——
2020-08-28$52.93$66.78355,000——
2020-08-27$52.89$66.73298,700——
2020-08-26$52.36$66.06241,500——
2020-08-25$52.84$66.66330,600——
2020-08-24$53.03$66.90374,800——
2020-08-21$51.78$65.33535,700——
2020-08-20$51.36$64.80416,200——
2020-08-19$52.27$65.94251,300——
2020-08-18$52.46$66.18340,400——
2020-08-17$52.81$66.62390,000——
2020-08-14$53.23$67.15391,600——
2020-08-13$53.27$67.21358,100——
2020-08-12$53.72$67.77422,300——
2020-08-11$53.70$67.75357,100——
2020-08-10$53.27$67.21397,700——
2020-08-07$53.25$67.18457,600——
2020-08-06$52.38$66.08411,200——
2020-08-05$53.07$66.95521,900——
2020-08-04$52.06$65.68501,800——
2020-08-03$52.33$66.02451,100——
2020-07-31$52.33$66.02805,600——
2020-07-30$52.28$65.96905,800——
2020-07-29$51.14$64.521,242,200——
2020-07-28$51.12$64.49629,300——
2020-07-27$53.06$66.94625,400——
2020-07-24$52.97$66.83635,500——
2020-07-23$53.44$67.42926,800——
2020-07-22$58.00$73.17643,800——
2020-07-21$58.37$73.64496,400——
2020-07-20$56.89$71.77555,900——
2020-07-17$57.15$72.10330,800——
2020-07-16$57.41$72.43331,500——
2020-07-15$57.77$72.88448,000——
2020-07-14$56.37$71.12693,000——
2020-07-13$55.26$69.72550,900——
2020-07-10$55.22$69.67408,100——
2020-07-09$53.90$68.00463,000——
2020-07-08$55.25$69.70423,200——
2020-07-07$55.04$69.44445,100——
2020-07-06$55.66$70.22673,700——
2020-07-02$54.24$68.43381,800——
2020-07-01$54.29$68.49456,800——
2020-06-30$54.98$69.36738,100——
2020-06-29$53.05$66.93542,400——
2020-06-26$52.90$66.742,394,700——
2020-06-25$54.28$68.48570,300——
2020-06-24$53.30$67.24702,700——
2020-06-23$55.27$69.73546,100——
2020-06-22$55.39$69.88436,400——
2020-06-19$55.69$70.261,308,200——
2020-06-18$55.73$70.311,185,100——
2020-06-17$56.05$70.71696,400——
2020-06-16$57.02$71.94590,100——
2020-06-15$56.73$71.57710,400——
2020-06-12$56.29$71.02910,400——
2020-06-11$55.51$69.591,220,700——
2020-06-10$59.46$74.54908,200——
2020-06-09$59.88$75.07668,000——
2020-06-08$60.77$76.18667,500——
2020-06-05$60.31$75.611,009,500——
2020-06-04$58.55$73.40968,700——
2020-06-03$57.75$72.40579,700——
2020-06-02$55.37$69.41659,500——
2020-06-01$54.68$68.55600,600——
2020-05-29$54.22$67.971,379,100——
2020-05-28$53.93$67.61619,500——
2020-05-27$55.03$68.99878,400——
2020-05-26$53.25$66.76990,500——
2020-05-22$51.35$64.37435,300——
2020-05-21$51.56$64.64515,100——
2020-05-20$51.84$64.99681,500——
2020-05-19$50.88$63.79635,100——
2020-05-18$52.73$66.10541,900——
2020-05-15$50.77$63.651,356,300——
2020-05-14$50.64$63.481,162,400——
2020-05-13$49.97$62.641,271,300——
2020-05-12$49.44$61.98634,000——
2020-05-11$51.91$65.08767,100——
2020-05-08$51.90$65.06668,400——
2020-05-07$50.53$63.35734,900——
2020-05-06$49.20$61.68588,100——
2020-05-05$49.62$62.21631,500——
2020-05-04$49.97$62.64783,800——
2020-05-01$49.78$62.41852,700——
2020-04-30$50.96$63.891,082,600——
2020-04-29$52.79$66.18483,900——
2020-04-28$51.01$63.95453,000——
2020-04-27$50.95$63.87523,000——
2020-04-24$48.83$61.22858,400——
2020-04-23$48.40$60.68580,100——
2020-04-22$49.10$61.55853,300——
2020-04-21$48.13$60.34707,100——
2020-04-20$49.90$62.56560,200——
2020-04-17$50.20$62.93584,000——
2020-04-16$48.08$60.27686,600——
2020-04-15$47.96$60.12431,500——
2020-04-14$48.45$60.74651,700——
2020-04-13$48.79$61.16553,900——
2020-04-09$50.93$63.85776,600——
2020-04-08$51.00$63.94767,500——
2020-04-07$48.44$60.73794,000——
2020-04-06$47.75$59.86528,400——
2020-04-03$44.08$55.26684,300——
2020-04-02$45.58$57.14697,600——
2020-04-01$44.18$55.39569,800——
2020-03-31$46.34$58.09935,200——
2020-03-30$46.44$58.22891,900——
2020-03-27$44.24$55.46737,600——
2020-03-26$45.84$57.47987,600——
2020-03-25$41.80$52.401,181,600——
2020-03-24$40.98$51.371,366,300——
2020-03-23$36.59$45.871,178,600——
2020-03-20$38.56$48.341,522,200——
2020-03-19$42.42$53.181,174,400——
2020-03-18$42.55$53.341,350,400——
2020-03-17$45.25$56.731,329,100——
2020-03-16$45.44$56.971,313,600——
2020-03-13$51.77$64.90974,600——
2020-03-12$46.14$57.841,062,900——
2020-03-11$50.80$63.68848,900——
2020-03-10$54.87$68.79885,900——
2020-03-09$52.28$65.541,332,000——
2020-03-06$55.32$69.35888,600——
2020-03-05$55.77$69.92742,200——
2020-03-04$58.23$73.00709,200——
2020-03-03$55.85$70.02834,300——
2020-03-02$57.29$71.821,258,600——
2020-02-28$54.71$68.592,042,200——
2020-02-27$59.21$74.231,153,100——
2020-02-26$63.24$79.28753,200——
2020-02-25$63.48$79.58448,600——
2020-02-24$66.10$82.87407,800——
2020-02-21$68.37$85.71405,100——
2020-02-20$69.24$86.80356,000——
2020-02-19$69.13$86.66330,600——
2020-02-18$68.80$86.25525,000——
2020-02-14$68.54$85.92366,100——
2020-02-13$68.86$86.33299,400——
2020-02-12$68.89$86.36372,000——
2020-02-11$68.82$86.28362,500——
2020-02-10$68.43$85.79529,600——
2020-02-07$68.08$85.35295,200——
2020-02-06$68.71$86.14392,300——
2020-02-05$69.01$86.51406,900——
2020-02-04$68.00$85.25916,900——
2020-02-03$67.47$84.581,171,300——
2020-01-31$65.26$81.81967,100——
2020-01-30$67.16$84.191,600,900——
2020-01-29$63.10$79.101,569,200——
2020-01-28$63.45$79.54600,600——
2020-01-27$62.80$78.73420,800——
2020-01-24$63.71$79.87412,000——
2020-01-23$65.25$81.80545,000——
2020-01-22$64.84$81.29447,000——
2020-01-21$65.07$81.57536,500——
2020-01-17$65.26$81.81513,400——
2020-01-16$66.31$83.13593,600——
2020-01-15$65.26$81.81568,500——
2020-01-14$65.67$82.33402,300——
2020-01-13$66.17$82.95331,200——
2020-01-10$65.33$81.90266,800——
2020-01-09$65.79$82.48445,700——
2020-01-08$65.44$82.04537,700——
2020-01-07$64.97$81.45423,800——
2020-01-06$64.99$81.47618,600——
2020-01-03$64.94$81.41445,900——
2020-01-02$65.80$82.49449,500——