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 — 2021

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2021-12-31$60.94$78.37600,700——
2021-12-30$61.33$78.87748,900——
2021-12-29$61.69$79.332,411,300——
2021-12-28$63.16$81.22675,200——
2021-12-27$62.00$79.73368,900——
2021-12-23$60.78$78.16397,700——
2021-12-22$60.44$77.72418,300——
2021-12-21$60.38$77.651,437,900——
2021-12-20$58.31$74.981,120,200——
2021-12-17$60.32$77.052,054,300——
2021-12-16$62.36$79.661,146,700——
2021-12-15$62.35$79.651,160,700——
2021-12-14$61.82$78.97646,200——
2021-12-13$61.02$77.95679,900——
2021-12-10$60.46$77.23629,200——
2021-12-09$60.95$77.86503,200——
2021-12-08$61.81$78.96366,700——
2021-12-07$61.44$78.49423,300——
2021-12-06$61.15$78.11625,500——
2021-12-03$59.90$76.52571,900——
2021-12-02$60.78$77.64509,900——
2021-12-01$58.51$74.74473,800——
2021-11-30$59.63$76.17969,100——
2021-11-29$61.52$78.59656,300——
2021-11-26$60.92$77.82360,000——
2021-11-24$63.58$81.22347,700——
2021-11-23$63.98$81.73410,000——
2021-11-22$63.36$80.94345,500——
2021-11-19$63.41$81.00359,000——
2021-11-18$64.35$82.20425,700——
2021-11-17$64.75$82.71638,000——
2021-11-16$64.89$82.89536,000——
2021-11-15$64.13$81.92369,100——
2021-11-12$64.68$82.62215,100——
2021-11-11$64.29$82.13269,000——
2021-11-10$64.39$82.25284,100——
2021-11-09$64.29$82.13370,600——
2021-11-08$64.52$82.42307,200——
2021-11-05$64.33$82.18380,900——
2021-11-04$63.34$80.91474,300——
2021-11-03$63.17$80.70304,000——
2021-11-02$62.51$79.85451,700——
2021-11-01$64.38$82.24321,900——
2021-10-29$63.04$80.53592,800——
2021-10-28$62.56$79.92414,200——
2021-10-27$62.22$79.48438,800——
2021-10-26$63.89$81.61440,900——
2021-10-25$63.99$81.74348,600——
2021-10-22$64.27$82.10343,000——
2021-10-21$63.54$81.17633,500——
2021-10-20$63.04$80.53380,800——
2021-10-19$62.47$79.80372,500——
2021-10-18$61.53$78.60311,500——
2021-10-15$61.60$78.69427,800——
2021-10-14$61.27$78.27355,400——
2021-10-13$59.66$76.21333,300——
2021-10-12$59.46$75.96325,800——
2021-10-11$59.13$75.53225,800——
2021-10-08$59.95$76.58195,900——
2021-10-07$59.78$76.36405,300——
2021-10-06$59.36$75.83354,000——
2021-10-05$60.34$77.08526,100——
2021-10-04$58.98$75.34373,000——
2021-10-01$59.76$76.34393,500——
2021-09-30$59.30$75.75475,500——
2021-09-29$60.01$76.66335,000——
2021-09-28$60.05$76.71404,100——
2021-09-27$60.96$77.87429,300——
2021-09-24$60.37$77.12445,100——
2021-09-23$59.35$75.82266,900——
2021-09-22$58.45$74.67295,300——
2021-09-21$57.81$73.85554,200——
2021-09-20$58.04$74.14837,300——
2021-09-17$59.63$76.173,727,200——
2021-09-16$59.47$75.97494,600——
2021-09-15$59.87$76.48480,400——
2021-09-14$59.21$75.64414,500——
2021-09-13$59.72$76.29436,400——
2021-09-10$59.39$75.87407,200——
2021-09-09$60.15$76.84505,800——
2021-09-08$59.90$76.52623,200——
2021-09-07$59.45$75.94907,300——
2021-09-03$62.04$79.25230,500——
2021-09-02$62.43$79.75314,600——
2021-09-01$62.59$79.95262,600——
2021-08-31$62.81$80.24453,300——
2021-08-30$62.74$80.15241,300——
2021-08-27$63.15$80.67408,300——
2021-08-26$62.12$79.35277,000——
2021-08-25$62.52$79.86330,300——
2021-08-24$61.81$78.96219,600——
2021-08-23$61.36$78.38284,000——
2021-08-20$61.15$78.11278,900——
2021-08-19$60.52$77.31290,500——
2021-08-18$60.39$77.14193,600——
2021-08-17$61.43$78.47206,000——
2021-08-16$61.85$79.01255,400——
2021-08-13$61.52$78.59224,100——
2021-08-12$62.04$79.25259,200——
2021-08-11$62.19$79.44266,600——
2021-08-10$62.16$79.41319,600——
2021-08-09$61.81$78.96241,800——
2021-08-06$61.72$78.84255,500——
2021-08-05$61.42$78.46250,300——
2021-08-04$60.49$77.27302,500——
2021-08-03$61.21$78.19430,500——
2021-08-02$61.07$78.01303,600——
2021-07-30$60.80$77.67654,300——
2021-07-29$61.19$78.17234,400——
2021-07-28$60.68$77.51387,800——
2021-07-27$60.85$77.73462,100——
2021-07-26$60.57$77.37632,900——
2021-07-23$60.80$77.67449,600——
2021-07-22$60.40$77.16646,600——
2021-07-21$62.79$80.21758,800——
2021-07-20$61.96$79.15737,300——
2021-07-19$59.97$76.61486,100——
2021-07-16$61.56$78.64364,500——
2021-07-15$61.75$78.88362,500——
2021-07-14$61.94$79.12445,700——
2021-07-13$61.38$78.41450,900——
2021-07-12$62.32$79.61424,000——
2021-07-09$62.12$79.35576,000——
2021-07-08$60.78$77.64522,900——
2021-07-07$61.64$78.74629,800——
2021-07-06$61.48$78.54570,000——
2021-07-02$62.70$80.09432,900——
2021-07-01$62.45$79.78663,900——
2021-06-30$61.97$79.16409,100——
2021-06-29$62.02$79.23451,700——
2021-06-28$62.57$79.93575,400——
2021-06-25$62.52$79.861,020,500——
2021-06-24$61.37$78.40732,800——
2021-06-23$61.38$78.41336,600——
2021-06-22$61.66$78.77484,600——
2021-06-21$61.68$78.79316,900——
2021-06-18$60.64$77.461,019,900——
2021-06-17$61.96$79.15463,000——
2021-06-16$62.88$80.32367,300——
2021-06-15$63.10$80.61418,200——
2021-06-14$62.35$79.65442,200——
2021-06-11$62.66$80.04360,200——
2021-06-10$62.47$79.33484,900——
2021-06-09$63.18$80.23404,000——
2021-06-08$63.48$80.61434,800——
2021-06-07$64.19$81.51373,000——
2021-06-04$64.45$81.84231,200——
2021-06-03$63.91$81.16726,100——
2021-06-02$63.06$80.08368,500——
2021-06-01$63.42$80.53388,800——
2021-05-28$63.44$80.56683,400——
2021-05-27$63.38$80.48723,400——
2021-05-26$62.92$79.90287,300——
2021-05-25$62.67$79.58547,000——
2021-05-24$62.89$79.86438,700——
2021-05-21$62.95$79.94378,700——
2021-05-20$62.77$79.71296,200——
2021-05-19$62.26$79.06492,400——
2021-05-18$62.07$78.82464,200——
2021-05-17$62.93$79.91346,600——
2021-05-14$63.34$80.43426,600——
2021-05-13$62.30$79.11532,800——
2021-05-12$61.01$77.47844,600——
2021-05-11$61.98$78.71548,200——
2021-05-10$63.39$80.50397,900——
2021-05-07$63.27$80.34562,900——
2021-05-06$63.33$80.42535,200——
2021-05-05$63.18$80.23601,500——
2021-05-04$62.36$79.19752,500——
2021-05-03$61.55$78.16622,000——
2021-04-30$61.44$78.021,016,700——
2021-04-29$61.96$78.68726,400——
2021-04-28$60.92$77.36746,700——
2021-04-27$60.35$76.64926,800——
2021-04-26$59.20$75.18878,600——
2021-04-23$57.85$73.461,250,400——
2021-04-22$56.08$71.212,142,500——
2021-04-21$63.01$80.01574,600——
2021-04-20$62.64$79.54465,800——
2021-04-19$62.51$79.38389,000——
2021-04-16$63.16$80.20390,400——
2021-04-15$62.79$79.73383,400——
2021-04-14$62.53$79.40440,700——
2021-04-13$62.87$79.84303,900——
2021-04-12$63.56$80.71242,800——
2021-04-09$62.71$79.63369,700——
2021-04-08$62.65$79.56370,900——
2021-04-07$62.53$79.40272,500——
2021-04-06$62.35$79.18332,700——
2021-04-05$62.26$79.06346,600——
2021-04-01$61.91$78.62345,000——
2021-03-31$60.93$77.37505,700——
2021-03-30$61.34$77.89326,000——
2021-03-29$61.63$78.26442,300——
2021-03-26$61.33$77.88238,300——
2021-03-25$59.76$75.89365,600——
2021-03-24$59.28$75.28427,300——
2021-03-23$58.65$74.48503,500——
2021-03-22$60.08$76.29445,000——
2021-03-19$60.82$77.231,328,100——
2021-03-18$61.04$77.51439,000——
2021-03-17$61.18$77.69447,400——
2021-03-16$60.39$76.69347,600——
2021-03-15$60.85$77.27283,000——
2021-03-12$60.29$76.56324,700——
2021-03-11$59.52$75.58356,900——
2021-03-10$59.81$75.95357,700——
2021-03-09$59.24$75.23517,700——
2021-03-08$59.79$75.93562,000——
2021-03-05$58.65$74.48538,900——
2021-03-04$56.31$71.51592,300——
2021-03-03$57.02$72.41505,300——
2021-03-02$57.36$72.84451,300——
2021-03-01$58.03$73.69778,800——
2021-02-26$56.00$71.11936,300——
2021-02-25$56.76$72.08386,600——
2021-02-24$57.98$73.63367,400——
2021-02-23$57.65$73.21414,800——
2021-02-22$57.68$73.25439,500——
2021-02-19$58.02$73.68365,400——
2021-02-18$57.38$72.86516,200——
2021-02-17$57.80$73.40549,300——
2021-02-16$57.95$73.59596,000——
2021-02-12$57.44$72.94392,100——
2021-02-11$57.41$72.90590,400——
2021-02-10$55.99$71.10387,500——
2021-02-09$56.22$71.39340,900——
2021-02-08$56.40$71.62380,300——
2021-02-05$55.92$71.01352,600——
2021-02-04$56.59$71.86355,400——
2021-02-03$55.34$70.27434,800——
2021-02-02$55.85$70.92543,000——
2021-02-01$54.75$69.53687,500——
2021-01-29$52.85$67.111,063,000——
2021-01-28$53.89$68.431,045,500——
2021-01-27$56.35$71.56836,500——
2021-01-26$58.28$74.01382,700——
2021-01-25$59.24$75.23398,300——
2021-01-22$59.40$75.43349,500——
2021-01-21$59.79$75.93369,700——
2021-01-20$60.83$77.25433,300——
2021-01-19$60.22$76.47345,500——
2021-01-15$59.67$75.77312,900——
2021-01-14$60.48$76.80450,000——
2021-01-13$60.01$76.20428,800——
2021-01-12$61.24$77.77406,800——
2021-01-11$61.18$77.69415,500——
2021-01-08$61.81$78.49459,100——
2021-01-07$61.41$77.98551,200——
2021-01-06$61.29$77.831,247,000——
2021-01-05$57.19$72.62533,600——
2021-01-04$56.93$72.29526,200——