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 — 1985

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1985-12-31$0.49$0.491,588,800
1985-12-30$0.48$0.48446,400
1985-12-27$0.48$0.48268,800
1985-12-26$0.48$0.48614,400
1985-12-24$0.47$0.47153,600
1985-12-23$0.47$0.47331,200
1985-12-20$0.47$0.471,915,200
1985-12-19$0.48$0.48873,600
1985-12-18$0.47$0.47230,400
1985-12-17$0.47$0.47182,400
1985-12-16$0.47$0.47216,000
1985-12-13$0.47$0.47177,600
1985-12-12$0.47$0.472,740,800
1985-12-11$0.47$0.47436,800
1985-12-10$0.47$0.47124,800
1985-12-09$0.46$0.46115,200
1985-12-06$0.47$0.47100,800
1985-12-05$0.47$0.47403,200
1985-12-04$0.46$0.462,414,400
1985-12-03$0.47$0.47465,600
1985-12-02$0.47$0.472,774,400
1985-11-29$0.47$0.47129,600
1985-11-27$0.47$0.4757,600
1985-11-26$0.47$0.47379,200
1985-11-25$0.47$0.47235,200
1985-11-22$0.47$0.47739,200
1985-11-21$0.48$0.483,360,000
1985-11-20$0.47$0.47489,600
1985-11-19$0.45$0.452,376,000
1985-11-18$0.44$0.44753,600
1985-11-15$0.44$0.44307,200
1985-11-14$0.44$0.441,670,400
1985-11-13$0.43$0.43220,800
1985-11-12$0.43$0.43201,600
1985-11-11$0.42$0.42110,400
1985-11-08$0.42$0.423,451,200
1985-11-07$0.42$0.42830,400
1985-11-06$0.41$0.4114,400
1985-11-05$0.41$0.414,800
1985-11-04$0.42$0.42264,000
1985-11-01$0.41$0.414,800
1985-10-31$0.41$0.41307,200
1985-10-30$0.41$0.41422,400
1985-10-29$0.41$0.414,435,200
1985-10-28$0.40$0.4014,400
1985-10-25$0.41$0.41883,200
1985-10-24$0.41$0.411,660,800
1985-10-23$0.40$0.401,118,400
1985-10-22$0.40$0.40945,600
1985-10-21$0.41$0.41393,600
1985-10-18$0.42$0.421,924,800
1985-10-17$0.42$0.42955,200
1985-10-16$0.42$0.429,355,200
1985-10-15$0.40$0.40283,200
1985-10-14$0.40$0.4091,200
1985-10-11$0.40$0.401,108,800
1985-10-10$0.39$0.39912,000
1985-10-09$0.40$0.406,619,200
1985-10-08$0.40$0.40235,200
1985-10-07$0.41$0.41643,200
1985-10-04$0.40$0.402,779,200
1985-10-03$0.38$0.38278,400
1985-10-02$0.39$0.39504,000
1985-10-01$0.39$0.39115,200
1985-09-30$0.38$0.382,630,400
1985-09-26$0.38$0.381,032,000
1985-09-25$0.39$0.39460,800
1985-09-24$0.38$0.38168,000
1985-09-23$0.39$0.39825,600
1985-09-20$0.38$0.38220,800
1985-09-19$0.38$0.381,920,000
1985-09-18$0.38$0.38124,800
1985-09-17$0.37$0.371,440,000
1985-09-16$0.38$0.381,939,200
1985-09-13$0.38$0.38398,400
1985-09-12$0.38$0.38148,800
1985-09-11$0.39$0.39369,600
1985-09-10$0.39$0.395,328,000
1985-09-09$0.39$0.39182,400
1985-09-06$0.39$0.39163,200
1985-09-05$0.39$0.391,204,800
1985-09-04$0.38$0.38408,000
1985-09-03$0.39$0.3996,000
1985-08-30$0.38$0.3881,600
1985-08-29$0.38$0.384,300,800
1985-08-28$0.38$0.38681,600
1985-08-27$0.36$0.36148,800
1985-08-26$0.36$0.3662,400
1985-08-23$0.36$0.3628,800
1985-08-22$0.37$0.3714,400
1985-08-21$0.37$0.37115,200
1985-08-20$0.36$0.3633,600
1985-08-19$0.36$0.36211,200
1985-08-16$0.37$0.37216,000
1985-08-15$0.37$0.37782,400
1985-08-14$0.37$0.37470,400
1985-08-13$0.36$0.3652,800
1985-08-12$0.38$0.38321,600
1985-08-09$0.37$0.373,494,400
1985-08-08$0.38$0.38192,000
1985-08-07$0.38$0.381,651,200
1985-08-06$0.39$0.3957,600
1985-08-05$0.39$0.39283,200
1985-08-02$0.39$0.3991,200
1985-08-01$0.39$0.39148,800
1985-07-31$0.39$0.39480,000
1985-07-30$0.38$0.38312,000
1985-07-29$0.39$0.39129,600
1985-07-26$0.38$0.3891,200
1985-07-25$0.39$0.39566,400
1985-07-24$0.38$0.38177,600
1985-07-23$0.39$0.391,036,800
1985-07-22$0.40$0.40120,000
1985-07-19$0.40$0.40451,200
1985-07-18$0.39$0.39225,600
1985-07-17$0.39$0.39340,800
1985-07-16$0.39$0.39465,600
1985-07-15$0.39$0.3986,400
1985-07-12$0.38$0.38124,800
1985-07-11$0.39$0.39115,200
1985-07-10$0.38$0.38763,200
1985-07-09$0.38$0.38552,000
1985-07-08$0.38$0.3852,800
1985-07-05$0.38$0.381,008,000
1985-07-03$0.38$0.38379,200
1985-07-02$0.38$0.38724,800
1985-07-01$0.38$0.381,185,600
1985-06-28$0.38$0.38374,400
1985-06-27$0.38$0.38422,400
1985-06-26$0.38$0.381,012,800
1985-06-25$0.37$0.37883,200
1985-06-24$0.36$0.36134,400
1985-06-21$0.36$0.361,867,200
1985-06-20$0.36$0.363,465,600
1985-06-19$0.35$0.35134,400
1985-06-18$0.35$0.351,051,200
1985-06-17$0.35$0.352,755,200
1985-06-14$0.35$0.35484,800
1985-06-13$0.35$0.351,176,000
1985-06-12$0.35$0.35355,200
1985-06-11$0.36$0.36259,200
1985-06-10$0.36$0.36403,200
1985-06-07$0.36$0.361,718,400
1985-06-06$0.37$0.37292,800
1985-06-05$0.38$0.38657,600
1985-06-04$0.36$0.36388,800
1985-06-03$0.36$0.361,147,200
1985-05-31$0.36$0.362,270,400
1985-05-30$0.34$0.341,339,200
1985-05-29$0.34$0.341,296,000
1985-05-28$0.34$0.341,737,600
1985-05-24$0.33$0.3343,200
1985-05-23$0.33$0.33235,200
1985-05-22$0.33$0.33192,000
1985-05-21$0.33$0.331,238,400
1985-05-20$0.33$0.33892,800
1985-05-17$0.34$0.349,508,800
1985-05-16$0.33$0.3367,200
1985-05-15$0.33$0.33201,600
1985-05-14$0.34$0.34417,600
1985-05-13$0.35$0.351,185,600
1985-05-10$0.34$0.34225,600
1985-05-09$0.34$0.34240,000
1985-05-08$0.35$0.3533,600
1985-05-07$0.35$0.354,996,800
1985-05-06$0.35$0.3538,400
1985-05-03$0.35$0.3524,000
1985-05-02$0.35$0.35316,800
1985-05-01$0.36$0.36192,000
1985-04-30$0.37$0.371,089,600
1985-04-29$0.37$0.37254,400
1985-04-26$0.37$0.37537,600
1985-04-25$0.38$0.38172,800
1985-04-24$0.38$0.3852,800
1985-04-23$0.38$0.38835,200
1985-04-22$0.38$0.383,988,800
1985-04-19$0.39$0.39364,800
1985-04-18$0.40$0.40216,000
1985-04-17$0.39$0.39124,800
1985-04-16$0.39$0.39235,200
1985-04-15$0.39$0.39283,200
1985-04-12$0.39$0.39748,800
1985-04-11$0.39$0.39124,800
1985-04-10$0.40$0.40240,000
1985-04-09$0.40$0.40134,400
1985-04-08$0.40$0.4081,600
1985-04-04$0.40$0.40100,800
1985-04-03$0.40$0.402,212,800
1985-04-02$0.39$0.39144,000
1985-04-01$0.39$0.39316,800
1985-03-29$0.38$0.38360,000
1985-03-28$0.38$0.38676,800
1985-03-27$0.37$0.372,827,200
1985-03-26$0.37$0.37158,400
1985-03-25$0.37$0.37835,200
1985-03-22$0.35$0.35369,600
1985-03-21$0.35$0.35489,600
1985-03-20$0.34$0.34806,400
1985-03-19$0.34$0.34134,400
1985-03-18$0.34$0.34307,200
1985-03-15$0.33$0.33806,400
1985-03-14$0.33$0.331,425,600
1985-03-13$0.34$0.34604,800
1985-03-12$0.35$0.35120,000
1985-03-11$0.36$0.36844,800
1985-03-08$0.36$0.363,806,400
1985-03-07$0.39$0.391,776,000
1985-03-06$0.38$0.38398,400
1985-03-05$0.39$0.39648,000
1985-03-04$0.39$0.391,080,000
1985-03-01$0.39$0.393,398,400
1985-02-28$0.37$0.37763,200
1985-02-27$0.36$0.361,056,000
1985-02-26$0.36$0.367,219,200
1985-02-25$0.36$0.363,648,000
1985-02-22$0.36$0.362,851,200
1985-02-21$0.36$0.362,630,400
1985-02-20$0.37$0.37350,400
1985-02-19$0.37$0.37585,600
1985-02-15$0.36$0.365,390,400
1985-02-14$0.36$0.366,763,200
1985-02-13$0.36$0.361,195,200
1985-02-12$0.36$0.361,080,000
1985-02-11$0.37$0.371,161,600
1985-02-08$0.36$0.365,035,200
1985-02-07$0.37$0.371,094,400
1985-02-06$0.36$0.3615,739,200
1985-02-05$0.34$0.341,329,600
1985-02-04$0.34$0.341,612,800
1985-02-01$0.33$0.33273,600
1985-01-31$0.34$0.341,603,200
1985-01-30$0.33$0.331,704,000
1985-01-29$0.33$0.33336,000
1985-01-28$0.34$0.34739,200
1985-01-25$0.34$0.341,166,400
1985-01-24$0.33$0.332,404,800
1985-01-23$0.31$0.31888,000
1985-01-22$0.30$0.306,408,000
1985-01-21$0.30$0.302,409,600
1985-01-18$0.29$0.291,003,200
1985-01-17$0.30$0.305,164,800
1985-01-16$0.29$0.293,417,600
1985-01-15$0.29$0.2910,012,800
1985-01-14$0.29$0.2996,000
1985-01-11$0.29$0.2996,000
1985-01-10$0.28$0.28724,800
1985-01-09$0.29$0.29129,600
1985-01-08$0.28$0.2838,400
1985-01-07$0.28$0.28196,800
1985-01-04$0.29$0.29355,200
1985-01-03$0.28$0.28840,000
1985-01-02$0.30$0.30129,600