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 — 2025

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2025-12-31$82.02$111.28449,600
2025-12-30$83.16$112.83481,900
2025-12-29$84.09$114.09598,500
2025-12-26$84.85$114.42402,300
2025-12-24$85.37$115.12280,400
2025-12-23$86.12$116.13801,300
2025-12-22$84.35$113.74460,900
2025-12-19$83.44$112.521,540,300
2025-12-18$83.50$112.60681,600
2025-12-17$83.08$112.03546,900
2025-12-16$82.97$111.88714,200
2025-12-15$81.99$110.56678,400
2025-12-12$83.00$111.92681,000
2025-12-11$83.39$112.45568,900
2025-12-10$83.20$112.19579,300
2025-12-09$81.56$109.98512,400
2025-12-08$80.90$109.09638,700
2025-12-05$81.10$109.36566,400
2025-12-04$81.25$109.56526,100
2025-12-03$81.00$109.23511,100
2025-12-02$79.96$107.83435,800
2025-12-01$79.98$107.85396,300
2025-11-28$80.86$109.04240,000
2025-11-26$80.83$109.00452,400
2025-11-25$80.20$108.15452,500
2025-11-24$79.34$106.99727,400
2025-11-21$80.04$107.93748,800
2025-11-20$78.81$106.27621,000
2025-11-19$78.45$105.79605,800
2025-11-18$78.27$105.55729,600
2025-11-17$78.79$106.25580,400
2025-11-14$81.57$110.00577,900
2025-11-13$82.27$110.94599,800
2025-11-12$83.70$112.87537,000
2025-11-11$83.55$112.67462,200
2025-11-10$82.99$111.91485,600
2025-11-07$82.92$111.82503,900
2025-11-06$82.19$110.83516,000
2025-11-05$82.38$111.09509,800
2025-11-04$81.64$110.09575,000
2025-11-03$80.88$109.07558,800
2025-10-31$80.61$108.70714,100
2025-10-30$80.80$108.96706,700
2025-10-29$80.61$108.70736,200
2025-10-28$81.83$110.35471,900
2025-10-27$83.07$112.02616,500
2025-10-24$81.91$110.45784,700
2025-10-23$81.53$109.941,400,500
2025-10-22$81.41$109.78724,600
2025-10-21$82.47$111.21696,700
2025-10-20$81.69$110.16609,100
2025-10-17$80.79$108.94629,900
2025-10-16$80.51$108.57868,600
2025-10-15$82.57$111.34690,700
2025-10-14$83.42$112.49788,700
2025-10-13$82.52$111.28536,300
2025-10-10$81.22$109.52623,600
2025-10-09$84.11$113.42491,800
2025-10-08$84.60$114.08730,900
2025-10-07$84.74$114.27816,700
2025-10-06$85.35$115.09826,400
2025-10-03$85.62$115.46809,000
2025-10-02$84.86$114.43823,300
2025-10-01$84.07$113.37815,000
2025-09-30$84.85$114.42525,800
2025-09-29$85.42$115.19671,500
2025-09-26$85.70$115.57508,500
2025-09-25$85.10$114.76781,200
2025-09-24$85.97$115.931,366,700
2025-09-23$86.18$116.21637,600
2025-09-22$87.08$117.43900,800
2025-09-19$86.72$116.942,395,400
2025-09-18$86.25$116.31683,400
2025-09-17$86.65$116.85821,300
2025-09-16$87.21$117.60766,400
2025-09-15$86.60$116.78654,000
2025-09-12$86.50$116.64399,400
2025-09-11$87.77$118.36501,900
2025-09-10$86.88$117.16562,900
2025-09-09$86.65$116.85608,500
2025-09-08$87.43$117.90864,000
2025-09-05$87.17$117.55783,500
2025-09-04$89.22$120.31826,500
2025-09-03$87.72$118.29547,600
2025-09-02$88.10$118.80713,500
2025-08-29$88.28$119.04703,800
2025-08-28$88.85$119.81519,300
2025-08-27$90.52$122.07609,000
2025-08-26$90.33$121.81505,000
2025-08-25$89.63$120.86516,000
2025-08-22$90.15$121.57451,900
2025-08-21$88.14$118.86440,600
2025-08-20$88.40$119.21710,300
2025-08-19$88.21$118.95552,100
2025-08-18$88.62$119.50676,800
2025-08-15$88.19$118.92751,000
2025-08-14$88.81$119.76609,000
2025-08-13$88.54$119.40553,400
2025-08-12$88.06$118.75568,600
2025-08-11$87.44$117.91404,900
2025-08-08$87.50$117.99407,500
2025-08-07$86.85$117.12535,200
2025-08-06$88.20$118.94577,900
2025-08-05$87.81$118.41731,300
2025-08-04$88.34$119.13676,400
2025-08-01$86.45$116.58972,200
2025-07-31$88.12$118.83944,300
2025-07-30$88.57$119.44887,600
2025-07-29$88.46$119.29887,700
2025-07-28$88.75$119.68978,700
2025-07-25$89.99$121.351,205,400
2025-07-24$89.79$121.082,602,500
2025-07-23$89.98$121.341,492,900
2025-07-22$90.58$122.15695,900
2025-07-21$90.92$122.60906,600
2025-07-18$92.82$125.17923,100
2025-07-17$93.23$125.72778,700
2025-07-16$92.29$124.45980,800
2025-07-15$91.13$122.89783,800
2025-07-14$92.78$125.11853,500
2025-07-11$92.33$124.51597,700
2025-07-10$93.80$126.49961,100
2025-07-09$92.61$124.88793,000
2025-07-08$92.39$124.59749,100
2025-07-07$92.66$124.95810,300
2025-07-03$93.10$125.54516,600
2025-07-02$91.96$124.011,047,200
2025-07-01$91.50$123.39996,600
2025-06-30$89.86$121.181,162,300
2025-06-27$89.56$120.771,105,400
2025-06-26$89.26$120.371,234,100
2025-06-25$86.85$117.12820,600
2025-06-24$86.15$116.171,042,500
2025-06-23$84.73$114.261,119,400
2025-06-20$83.22$112.221,421,300
2025-06-18$83.22$112.221,341,500
2025-06-17$83.55$112.67702,200
2025-06-16$84.22$113.57590,600
2025-06-13$82.99$111.91649,600
2025-06-12$84.18$113.52731,900
2025-06-11$83.13$112.101,304,200
2025-06-10$84.22$113.57834,700
2025-06-09$84.53$113.99601,600
2025-06-06$85.64$114.82776,700
2025-06-05$85.21$114.251,102,500
2025-06-04$85.16$114.181,154,300
2025-06-03$84.97$113.931,024,600
2025-06-02$84.65$113.501,486,600
2025-05-30$85.26$114.318,787,100
2025-05-29$84.84$113.751,668,700
2025-05-28$85.30$114.371,055,300
2025-05-27$85.97$115.27942,100
2025-05-23$83.92$112.52811,000
2025-05-22$84.47$113.25922,200
2025-05-21$83.83$112.40797,400
2025-05-20$85.59$114.76819,500
2025-05-19$85.55$114.70884,600
2025-05-16$85.38$114.48765,700
2025-05-15$84.77$113.661,029,100
2025-05-14$83.37$111.781,073,000
2025-05-13$83.98$112.60713,100
2025-05-12$83.66$112.17569,100
2025-05-09$81.54$109.33429,700
2025-05-08$81.34$109.06499,800
2025-05-07$80.56$108.01701,400
2025-05-06$79.85$107.06366,300
2025-05-05$79.94$107.18456,900
2025-05-02$79.99$107.25895,400
2025-05-01$78.24$104.90584,500
2025-04-30$78.29$104.97910,000
2025-04-29$78.04$104.63598,400
2025-04-28$77.78$104.29687,700
2025-04-25$78.59$105.37775,100
2025-04-24$78.70$105.521,430,500
2025-04-23$73.00$97.88949,400
2025-04-22$71.90$96.40573,900
2025-04-21$69.67$93.41592,400
2025-04-17$71.66$96.08649,900
2025-04-16$71.43$95.77959,000
2025-04-15$73.26$98.22716,000
2025-04-14$73.45$98.48682,800
2025-04-11$72.38$97.05908,800
2025-04-10$71.04$95.25922,500
2025-04-09$73.03$97.921,127,700
2025-04-08$66.45$89.091,082,000
2025-04-07$67.85$90.971,304,700
2025-04-04$69.02$92.54920,400
2025-04-03$73.49$98.53727,500
2025-04-02$77.59$104.03743,500
2025-04-01$77.28$103.61730,400
2025-03-31$77.63$104.08790,100
2025-03-28$77.11$103.39907,700
2025-03-27$78.15$104.78581,000
2025-03-26$78.32$105.01685,700
2025-03-25$78.27$104.94578,400
2025-03-24$77.43$103.82702,100
2025-03-21$75.84$101.683,108,800
2025-03-20$76.01$101.91785,200
2025-03-19$76.07$101.99772,300
2025-03-18$74.95$100.49797,800
2025-03-17$74.96$100.50606,300
2025-03-14$73.98$99.19556,500
2025-03-13$72.08$96.64569,300
2025-03-12$73.80$98.95721,000
2025-03-11$74.14$99.40867,300
2025-03-10$74.47$99.85856,300
2025-03-07$75.77$101.59812,600
2025-03-06$75.98$101.87986,300
2025-03-05$76.93$103.151,104,900
2025-03-04$76.28$102.27733,200
2025-03-03$79.05$105.99913,900
2025-02-28$80.05$107.331,266,200
2025-02-27$79.27$106.28470,100
2025-02-26$79.48$106.561,158,200
2025-02-25$79.62$106.75693,300
2025-02-24$80.02$107.29612,000
2025-02-21$80.25$107.60488,500
2025-02-20$82.24$110.27499,800
2025-02-19$82.84$111.07596,000
2025-02-18$82.84$111.07421,300
2025-02-14$82.28$110.32504,200
2025-02-13$82.62$110.77378,600
2025-02-12$82.05$110.01465,000
2025-02-11$82.69$110.87521,700
2025-02-10$84.33$113.07588,200
2025-02-07$85.30$114.37400,700
2025-02-06$86.24$115.63308,300
2025-02-05$86.30$115.71492,300
2025-02-04$86.14$115.49492,200
2025-02-03$85.82$115.07617,700
2025-01-31$86.58$116.081,001,700
2025-01-30$86.03$115.351,140,200
2025-01-29$82.96$111.23597,000
2025-01-28$84.39$113.15544,500
2025-01-27$83.45$111.89571,500
2025-01-24$84.88$113.80673,000
2025-01-23$84.26$112.97397,900
2025-01-22$84.23$112.93601,900
2025-01-21$83.91$112.50500,100
2025-01-17$83.48$111.93419,300
2025-01-16$82.96$111.23355,500
2025-01-15$81.88$109.78340,200
2025-01-14$80.81$108.35418,000
2025-01-13$79.02$105.95515,700
2025-01-10$79.00$105.92929,200
2025-01-08$81.48$109.25505,900
2025-01-07$81.18$108.84616,700
2025-01-06$81.85$109.74687,200
2025-01-03$81.90$109.81542,000
2025-01-02$81.92$109.84570,400