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 — 1982

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1982-12-31$0.41$0.41144,000
1982-12-30$0.41$0.4167,200
1982-12-29$0.41$0.41153,600
1982-12-28$0.41$0.41806,400
1982-12-27$0.42$0.42720,000
1982-12-23$0.42$0.42422,400
1982-12-22$0.42$0.42633,600
1982-12-21$0.42$0.421,180,800
1982-12-20$0.42$0.42374,400
1982-12-17$0.43$0.43163,200
1982-12-16$0.41$0.4176,800
1982-12-15$0.41$0.41864,000
1982-12-14$0.45$0.45268,800
1982-12-13$0.45$0.45556,800
1982-12-10$0.46$0.46441,600
1982-12-09$0.46$0.46316,800
1982-12-08$0.46$0.46710,400
1982-12-07$0.45$0.45796,800
1982-12-06$0.44$0.44316,800
1982-12-03$0.45$0.45105,600
1982-12-02$0.45$0.45163,200
1982-12-01$0.45$0.45700,800
1982-11-30$0.45$0.451,660,800
1982-11-29$0.41$0.41912,000
1982-11-26$0.44$0.44115,200
1982-11-24$0.44$0.441,468,800
1982-11-23$0.45$0.45787,200
1982-11-22$0.47$0.474,300,800
1982-11-19$0.47$0.47633,600
1982-11-18$0.47$0.47451,200
1982-11-17$0.46$0.46345,600
1982-11-16$0.45$0.451,699,200
1982-11-15$0.46$0.461,651,200
1982-11-12$0.47$0.47355,200
1982-11-11$0.46$0.46268,800
1982-11-10$0.46$0.46364,800
1982-11-09$0.45$0.45537,600
1982-11-08$0.45$0.45787,200
1982-11-05$0.45$0.451,843,200
1982-11-04$0.42$0.421,324,800
1982-11-03$0.41$0.41652,800
1982-11-02$0.40$0.40681,600
1982-11-01$0.38$0.38432,000
1982-10-29$0.38$0.38278,400
1982-10-28$0.37$0.37499,200
1982-10-27$0.37$0.371,929,600
1982-10-26$0.37$0.372,236,800
1982-10-25$0.36$0.361,305,600
1982-10-22$0.38$0.38768,000
1982-10-21$0.36$0.362,371,200
1982-10-20$0.34$0.341,305,600
1982-10-19$0.31$0.31326,400
1982-10-18$0.31$0.31153,600
1982-10-15$0.31$0.312,841,600
1982-10-14$0.31$0.31307,200
1982-10-13$0.32$0.32422,400
1982-10-12$0.32$0.32931,200
1982-10-11$0.32$0.32681,600
1982-10-08$0.31$0.312,601,600
1982-10-07$0.30$0.30998,400
1982-10-06$0.29$0.29844,800
1982-10-05$0.28$0.28182,400
1982-10-04$0.28$0.28115,200
1982-10-01$0.28$0.28172,800
1982-09-30$0.28$0.28451,200
1982-09-29$0.29$0.29518,400
1982-09-28$0.29$0.29230,400
1982-09-27$0.29$0.29182,400
1982-09-24$0.29$0.29336,000
1982-09-23$0.29$0.29326,400
1982-09-22$0.29$0.29412,800
1982-09-21$0.29$0.29739,200
1982-09-20$0.28$0.28230,400
1982-09-17$0.29$0.29643,200
1982-09-16$0.29$0.291,344,000
1982-09-15$0.28$0.282,083,200
1982-09-14$0.26$0.26950,400
1982-09-13$0.26$0.26211,200
1982-09-10$0.26$0.26249,600
1982-09-09$0.26$0.26182,400
1982-09-08$0.26$0.26259,200
1982-09-07$0.26$0.26432,000
1982-09-03$0.26$0.261,036,800
1982-09-02$0.25$0.25412,800
1982-09-01$0.25$0.25556,800
1982-08-31$0.24$0.241,008,000
1982-08-30$0.24$0.24182,400
1982-08-27$0.24$0.24192,000
1982-08-26$0.24$0.24460,800
1982-08-25$0.24$0.24384,000
1982-08-24$0.24$0.24508,800
1982-08-23$0.24$0.24662,400
1982-08-20$0.24$0.24710,400
1982-08-19$0.24$0.24854,400
1982-08-18$0.24$0.24796,800
1982-08-17$0.23$0.23288,000
1982-08-16$0.23$0.23105,600
1982-08-13$0.22$0.22393,600
1982-08-12$0.23$0.2319,200
1982-08-11$0.23$0.2386,400
1982-08-10$0.23$0.23115,200
1982-08-09$0.23$0.2319,200
1982-08-06$0.23$0.23144,000
1982-08-05$0.23$0.2357,600
1982-08-04$0.23$0.2328,800
1982-08-03$0.23$0.23230,400
1982-08-02$0.23$0.23326,400
1982-07-30$0.22$0.22182,400
1982-07-29$0.22$0.22566,400
1982-07-28$0.22$0.22720,000
1982-07-27$0.23$0.23720,000
1982-07-26$0.24$0.24211,200
1982-07-23$0.25$0.25336,000
1982-07-22$0.24$0.242,342,400
1982-07-21$0.24$0.241,238,400
1982-07-20$0.24$0.24403,200
1982-07-19$0.24$0.2496,000
1982-07-16$0.24$0.2486,400
1982-07-15$0.24$0.242,592,000
1982-07-14$0.24$0.24883,200
1982-07-13$0.25$0.25124,800
1982-07-12$0.25$0.25451,200
1982-07-09$0.24$0.24432,000
1982-07-08$0.24$0.24259,200
1982-07-07$0.24$0.24182,400
1982-07-06$0.23$0.230
1982-07-02$0.23$0.2328,800
1982-07-01$0.24$0.24288,000
1982-06-30$0.24$0.24259,200
1982-06-29$0.24$0.24412,800
1982-06-28$0.24$0.24384,000
1982-06-25$0.24$0.241,209,600
1982-06-24$0.25$0.25316,800
1982-06-23$0.25$0.25124,800
1982-06-22$0.24$0.24326,400
1982-06-21$0.24$0.24230,400
1982-06-18$0.24$0.24345,600
1982-06-17$0.25$0.25345,600
1982-06-16$0.25$0.25230,400
1982-06-15$0.25$0.25403,200
1982-06-14$0.26$0.26192,000
1982-06-11$0.26$0.26201,600
1982-06-10$0.25$0.25153,600
1982-06-09$0.25$0.25278,400
1982-06-08$0.25$0.25115,200
1982-06-07$0.25$0.250
1982-06-04$0.25$0.25307,200
1982-06-03$0.25$0.25403,200
1982-06-02$0.26$0.26249,600
1982-06-01$0.26$0.2628,800
1982-05-28$0.26$0.26230,400
1982-05-27$0.26$0.261,209,600
1982-05-26$0.26$0.26528,000
1982-05-25$0.27$0.27470,400
1982-05-24$0.27$0.2719,200
1982-05-21$0.28$0.2896,000
1982-05-20$0.28$0.28211,200
1982-05-19$0.28$0.2828,800
1982-05-18$0.28$0.2848,000
1982-05-17$0.28$0.2828,800
1982-05-14$0.28$0.2867,200
1982-05-13$0.28$0.2828,800
1982-05-12$0.28$0.2838,400
1982-05-11$0.27$0.27144,000
1982-05-10$0.27$0.27201,600
1982-05-07$0.27$0.27566,400
1982-05-06$0.27$0.27460,800
1982-05-05$0.27$0.27124,800
1982-05-04$0.27$0.27268,800
1982-05-03$0.28$0.28268,800
1982-04-30$0.28$0.281,747,200
1982-04-29$0.28$0.28566,400
1982-04-28$0.29$0.291,036,800
1982-04-27$0.29$0.29806,400
1982-04-26$0.28$0.28307,200
1982-04-23$0.27$0.27499,200
1982-04-22$0.26$0.26240,000
1982-04-21$0.26$0.2667,200
1982-04-20$0.26$0.26115,200
1982-04-19$0.26$0.26211,200
1982-04-16$0.26$0.26278,400
1982-04-15$0.25$0.25748,800
1982-04-14$0.25$0.25316,800
1982-04-13$0.25$0.25412,800
1982-04-12$0.25$0.2586,400
1982-04-08$0.25$0.2596,000
1982-04-07$0.25$0.2567,200
1982-04-06$0.25$0.2519,200
1982-04-05$0.25$0.25988,800
1982-04-02$0.25$0.25384,000
1982-04-01$0.24$0.24393,600
1982-03-31$0.24$0.24384,000
1982-03-30$0.24$0.2476,800
1982-03-29$0.24$0.24211,200
1982-03-26$0.24$0.2486,400
1982-03-25$0.24$0.2448,000
1982-03-24$0.24$0.24326,400
1982-03-23$0.24$0.24364,800
1982-03-22$0.24$0.2457,600
1982-03-19$0.24$0.241,113,600
1982-03-18$0.23$0.2319,200
1982-03-17$0.23$0.2338,400
1982-03-16$0.23$0.2328,800
1982-03-15$0.23$0.23163,200
1982-03-12$0.24$0.24144,000
1982-03-11$0.24$0.2438,400
1982-03-10$0.24$0.24249,600
1982-03-09$0.24$0.24182,400
1982-03-08$0.24$0.2457,600
1982-03-05$0.25$0.2557,600
1982-03-04$0.25$0.25278,400
1982-03-03$0.26$0.26268,800
1982-03-02$0.26$0.26211,200
1982-03-01$0.26$0.2696,000
1982-02-26$0.26$0.269,600
1982-02-25$0.26$0.26259,200
1982-02-24$0.26$0.26163,200
1982-02-23$0.26$0.26336,000
1982-02-22$0.26$0.2686,400
1982-02-19$0.27$0.27288,000
1982-02-18$0.27$0.2776,800
1982-02-17$0.27$0.27278,400
1982-02-16$0.27$0.27192,000
1982-02-12$0.27$0.2728,800
1982-02-11$0.27$0.2767,200
1982-02-10$0.27$0.27240,000
1982-02-09$0.27$0.27316,800
1982-02-08$0.28$0.28182,400
1982-02-05$0.28$0.28412,800
1982-02-04$0.27$0.2719,200
1982-02-03$0.27$0.27268,800
1982-02-02$0.26$0.26892,800
1982-02-01$0.26$0.261,612,800
1982-01-29$0.25$0.25451,200
1982-01-28$0.24$0.24441,600
1982-01-27$0.24$0.2428,800
1982-01-26$0.24$0.24240,000
1982-01-25$0.24$0.24326,400
1982-01-22$0.24$0.24595,200
1982-01-21$0.24$0.24115,200
1982-01-20$0.24$0.24940,800
1982-01-19$0.24$0.2438,400
1982-01-18$0.24$0.24134,400
1982-01-15$0.24$0.240
1982-01-14$0.24$0.24201,600
1982-01-13$0.24$0.24211,200
1982-01-12$0.24$0.24576,000
1982-01-11$0.25$0.25326,400
1982-01-08$0.26$0.26537,600
1982-01-07$0.25$0.2538,400
1982-01-06$0.25$0.259,600
1982-01-05$0.25$0.25720,000
1982-01-04$0.25$0.25153,600