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 — 2015

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2015-12-31$52.40$62.86469,000
2015-12-30$52.82$63.37471,600
2015-12-29$52.85$63.40314,800
2015-12-28$52.66$63.17541,200
2015-12-24$52.09$62.49183,600
2015-12-23$52.11$62.51615,500
2015-12-22$51.87$62.23787,600
2015-12-21$51.61$61.91867,600
2015-12-18$51.69$62.012,014,400
2015-12-17$52.47$62.95750,000
2015-12-16$53.77$64.19960,500
2015-12-15$52.01$62.091,083,100
2015-12-14$51.05$60.951,050,600
2015-12-11$50.99$60.88714,400
2015-12-10$52.23$62.36769,600
2015-12-09$51.89$61.95943,200
2015-12-08$53.34$63.68706,300
2015-12-07$54.43$64.98400,100
2015-12-04$54.66$65.26639,000
2015-12-03$53.38$63.731,009,500
2015-12-02$54.39$64.93439,800
2015-12-01$54.90$65.54834,200
2015-11-30$54.39$64.93895,300
2015-11-27$54.70$65.30227,000
2015-11-25$54.30$64.83325,900
2015-11-24$54.27$64.79624,700
2015-11-23$54.36$64.90658,100
2015-11-20$54.44$64.99506,100
2015-11-19$54.05$64.53509,400
2015-11-18$53.83$64.27646,800
2015-11-17$52.89$63.14426,400
2015-11-16$53.36$63.70574,600
2015-11-13$52.06$62.15544,000
2015-11-12$53.05$63.33508,900
2015-11-11$53.81$64.24462,900
2015-11-10$53.47$63.84477,900
2015-11-09$53.31$63.64543,900
2015-11-06$53.87$64.31611,800
2015-11-05$53.46$63.82503,900
2015-11-04$53.17$63.48486,200
2015-11-03$52.72$62.941,087,800
2015-11-02$53.47$63.841,054,800
2015-10-30$51.82$61.87651,000
2015-10-29$52.28$62.42498,500
2015-10-28$52.60$62.80664,800
2015-10-27$51.04$60.93786,800
2015-10-26$51.33$61.28684,200
2015-10-23$50.58$60.39609,700
2015-10-22$49.46$59.05986,300
2015-10-21$48.62$58.051,287,100
2015-10-20$50.24$59.98596,400
2015-10-19$50.68$60.51628,400
2015-10-16$50.14$59.86556,500
2015-10-15$49.67$59.30459,900
2015-10-14$48.44$57.83509,500
2015-10-13$48.76$58.21515,400
2015-10-12$49.51$59.11323,000
2015-10-09$49.47$59.06378,700
2015-10-08$49.62$59.24473,800
2015-10-07$49.54$59.14541,100
2015-10-06$48.96$58.45873,600
2015-10-05$49.12$58.641,060,900
2015-10-02$48.67$58.11918,400
2015-10-01$48.67$58.11927,600
2015-09-30$48.23$57.58949,400
2015-09-29$46.64$55.68539,600
2015-09-28$46.74$55.80912,400
2015-09-25$48.13$57.461,500,000
2015-09-24$47.82$57.091,041,900
2015-09-23$48.66$58.091,250,100
2015-09-22$48.77$58.221,029,500
2015-09-21$49.56$59.171,295,000
2015-09-18$49.11$58.632,762,200
2015-09-17$50.25$59.991,124,500
2015-09-16$50.64$60.461,165,200
2015-09-15$50.50$60.291,612,300
2015-09-14$50.55$60.351,068,000
2015-09-11$50.91$60.78998,700
2015-09-10$50.84$60.70965,000
2015-09-09$50.48$60.27588,000
2015-09-08$50.72$60.551,042,200
2015-09-04$49.42$59.00748,900
2015-09-03$49.90$59.57909,800
2015-09-02$49.53$59.131,031,700
2015-09-01$49.21$58.751,195,700
2015-08-31$50.58$60.39778,500
2015-08-28$51.22$61.15705,700
2015-08-27$50.68$60.511,042,500
2015-08-26$48.49$57.891,414,200
2015-08-25$47.19$56.34896,100
2015-08-24$47.76$57.021,707,000
2015-08-21$51.41$61.38771,000
2015-08-20$52.99$63.26520,400
2015-08-19$54.29$64.81538,500
2015-08-18$54.72$65.33474,200
2015-08-17$55.03$65.70375,600
2015-08-14$54.79$65.41327,100
2015-08-13$54.38$64.92504,700
2015-08-12$54.50$65.07905,200
2015-08-11$55.03$65.70490,100
2015-08-10$55.21$65.91683,500
2015-08-07$54.31$64.84543,700
2015-08-06$54.42$64.97963,600
2015-08-05$54.64$65.23643,800
2015-08-04$54.17$64.67627,800
2015-08-03$53.45$63.81422,600
2015-07-31$53.31$63.641,126,800
2015-07-30$52.91$63.17748,500
2015-07-29$52.11$62.21813,800
2015-07-28$52.02$62.10763,400
2015-07-27$52.15$62.26841,500
2015-07-24$52.45$62.62757,100
2015-07-23$52.49$62.671,206,000
2015-07-22$52.94$63.202,236,600
2015-07-21$49.56$59.17877,400
2015-07-20$49.75$59.39712,700
2015-07-17$49.76$59.41421,900
2015-07-16$49.92$59.60507,600
2015-07-15$49.69$59.32363,500
2015-07-14$49.65$59.28365,800
2015-07-13$49.27$58.82745,500
2015-07-10$49.35$58.92682,100
2015-07-09$48.72$58.17491,400
2015-07-08$48.45$57.84553,800
2015-07-07$49.38$58.95643,100
2015-07-06$49.16$58.69529,900
2015-07-02$49.50$59.10402,200
2015-07-01$49.36$58.93521,400
2015-06-30$49.03$58.54567,900
2015-06-29$48.59$58.01582,800
2015-06-26$50.29$60.041,271,100
2015-06-25$49.82$59.48423,600
2015-06-24$50.12$59.84454,100
2015-06-23$50.56$60.36408,900
2015-06-22$50.57$60.37485,300
2015-06-19$49.87$59.54708,700
2015-06-18$50.00$59.69727,300
2015-06-17$49.45$59.04483,000
2015-06-16$49.56$59.17450,800
2015-06-15$49.25$58.80444,200
2015-06-12$49.26$58.81461,100
2015-06-11$49.70$59.05624,400
2015-06-10$49.33$58.611,122,400
2015-06-09$48.29$57.37418,700
2015-06-08$48.40$57.50459,500
2015-06-05$48.62$57.77438,800
2015-06-04$48.17$57.23482,900
2015-06-03$48.55$57.68497,200
2015-06-02$47.87$56.87486,100
2015-06-01$47.68$56.65666,100
2015-05-29$47.84$56.84754,900
2015-05-28$47.76$56.74384,900
2015-05-27$47.77$56.76730,600
2015-05-26$46.96$55.79611,100
2015-05-22$47.35$56.26308,400
2015-05-21$47.51$56.45340,800
2015-05-20$47.71$56.68690,400
2015-05-19$47.86$56.86495,200
2015-05-18$47.69$56.66449,100
2015-05-15$46.93$55.76316,400
2015-05-14$47.12$55.98391,700
2015-05-13$46.54$55.29527,600
2015-05-12$46.83$55.64597,800
2015-05-11$46.80$55.60419,300
2015-05-08$46.65$55.42533,000
2015-05-07$46.23$54.93336,600
2015-05-06$45.89$54.52437,900
2015-05-05$45.91$54.55871,100
2015-05-04$46.85$55.66547,500
2015-05-01$46.43$55.16678,500
2015-04-30$45.66$54.251,351,500
2015-04-29$46.29$55.00608,100
2015-04-28$46.47$55.21753,400
2015-04-27$45.97$54.62940,000
2015-04-24$46.40$55.13589,800
2015-04-23$46.25$54.95793,800
2015-04-22$45.99$54.641,000,500
2015-04-21$45.31$53.83910,200
2015-04-20$44.81$53.241,025,100
2015-04-17$43.81$52.05654,400
2015-04-16$44.37$52.72492,400
2015-04-15$44.13$52.43491,900
2015-04-14$44.12$52.42711,300
2015-04-13$43.72$51.94730,900
2015-04-10$43.49$51.67378,000
2015-04-09$43.60$51.80356,300
2015-04-08$43.60$51.80509,800
2015-04-07$43.50$51.68408,600
2015-04-06$43.74$51.97571,900
2015-04-02$43.90$52.16479,400
2015-04-01$44.13$52.43580,900
2015-03-31$44.09$52.38898,600
2015-03-30$44.18$52.49419,100
2015-03-27$43.34$51.49435,700
2015-03-26$43.56$51.75515,400
2015-03-25$43.17$51.29424,400
2015-03-24$44.07$52.36432,600
2015-03-23$44.12$52.42429,300
2015-03-20$44.58$52.971,127,500
2015-03-19$43.74$51.97394,900
2015-03-18$43.94$52.21472,300
2015-03-17$43.79$52.03583,700
2015-03-16$43.73$51.96469,600
2015-03-13$43.05$51.15450,400
2015-03-12$43.55$51.74430,800
2015-03-11$42.86$50.92688,700
2015-03-10$42.05$49.96682,800
2015-03-09$42.24$50.19952,500
2015-03-06$42.09$50.01549,000
2015-03-05$42.57$50.58562,500
2015-03-04$42.39$50.36597,400
2015-03-03$42.95$51.03256,600
2015-03-02$43.40$51.56552,200
2015-02-27$43.04$51.14397,100
2015-02-26$43.27$51.41523,800
2015-02-25$43.48$51.66498,100
2015-02-24$43.04$51.14597,700
2015-02-23$42.95$51.03542,700
2015-02-20$43.37$51.53458,900
2015-02-19$42.80$50.85442,900
2015-02-18$43.29$51.43385,800
2015-02-17$43.19$51.31441,100
2015-02-13$43.20$51.33583,600
2015-02-12$43.13$51.24367,000
2015-02-11$42.83$50.89472,500
2015-02-10$42.59$50.60440,300
2015-02-09$42.01$49.91470,900
2015-02-06$42.23$50.17655,800
2015-02-05$42.33$50.29496,000
2015-02-04$41.77$49.63568,000
2015-02-03$41.21$48.96407,700
2015-02-02$40.65$48.30480,200
2015-01-30$40.17$47.731,266,300
2015-01-29$40.86$48.55623,200
2015-01-28$40.34$47.93774,900
2015-01-27$40.39$47.99463,900
2015-01-26$40.92$48.62533,600
2015-01-23$40.38$47.98458,100
2015-01-22$40.43$48.03612,300
2015-01-21$39.61$47.06528,800
2015-01-20$39.54$46.98540,500
2015-01-16$39.55$46.99455,500
2015-01-15$39.20$46.57696,600
2015-01-14$39.58$47.03544,000
2015-01-13$39.86$47.36781,600
2015-01-12$39.77$47.25674,900
2015-01-09$39.74$47.22799,900
2015-01-08$39.43$46.85711,100
2015-01-07$38.94$46.26501,600
2015-01-06$38.38$45.60578,100
2015-01-05$38.95$46.28417,000
2015-01-02$39.60$47.05355,900