NASDAQ:CSGP | Historical Stock Price | COSTAR GROUP, INC.

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
1998-07-01 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$0.59$1.67$4.69$13.18$37.05$104.151998-07-012026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2009

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2009-12-31$4.18$4.181,464,000
2009-12-30$4.29$4.29953,000
2009-12-29$4.31$4.31853,000
2009-12-28$4.28$4.281,382,000
2009-12-24$4.24$4.24227,000
2009-12-23$4.23$4.23505,000
2009-12-22$4.17$4.17980,000
2009-12-21$4.11$4.11578,000
2009-12-18$4.08$4.082,654,000
2009-12-17$4.00$4.001,484,000
2009-12-16$4.01$4.01691,000
2009-12-15$4.00$4.001,310,000
2009-12-14$4.04$4.041,288,000
2009-12-11$4.00$4.00429,000
2009-12-10$4.01$4.01985,000
2009-12-09$4.06$4.06465,000
2009-12-08$4.09$4.091,788,000
2009-12-07$4.19$4.191,391,000
2009-12-04$4.22$4.222,068,000
2009-12-03$4.08$4.08963,000
2009-12-02$4.20$4.203,491,000
2009-12-01$4.01$4.011,231,000
2009-11-30$3.97$3.971,042,000
2009-11-27$3.93$3.93411,000
2009-11-25$4.09$4.09415,000
2009-11-24$4.10$4.101,236,000
2009-11-23$4.16$4.162,238,000
2009-11-20$4.05$4.05774,000
2009-11-19$4.06$4.061,338,000
2009-11-18$4.13$4.13513,000
2009-11-17$4.21$4.21936,000
2009-11-16$4.20$4.201,588,000
2009-11-13$4.10$4.10691,000
2009-11-12$4.02$4.02534,000
2009-11-11$4.10$4.10379,000
2009-11-10$4.08$4.081,067,000
2009-11-09$4.09$4.091,035,000
2009-11-06$3.96$3.96480,000
2009-11-05$3.97$3.971,186,000
2009-11-04$3.90$3.901,986,000
2009-11-03$3.88$3.881,335,000
2009-11-02$3.84$3.842,036,000
2009-10-30$3.88$3.881,911,000
2009-10-29$3.94$3.94998,000
2009-10-28$3.94$3.942,068,000
2009-10-27$4.05$4.053,059,000
2009-10-26$4.10$4.102,901,000
2009-10-23$4.10$4.103,253,000
2009-10-22$3.99$3.995,507,000
2009-10-21$4.17$4.173,000,000
2009-10-20$4.20$4.202,640,000
2009-10-19$4.34$4.341,727,000
2009-10-16$4.31$4.311,540,000
2009-10-15$4.36$4.361,110,000
2009-10-14$4.44$4.441,494,000
2009-10-13$4.30$4.301,214,000
2009-10-12$4.30$4.301,204,000
2009-10-09$4.33$4.33816,000
2009-10-08$4.21$4.211,924,000
2009-10-07$4.17$4.171,191,000
2009-10-06$4.17$4.17970,000
2009-10-05$4.04$4.041,335,000
2009-10-02$3.95$3.95863,000
2009-10-01$3.93$3.932,200,000
2009-09-30$4.12$4.121,767,000
2009-09-29$4.16$4.16638,000
2009-09-28$4.10$4.10765,000
2009-09-25$4.02$4.02614,000
2009-09-24$4.00$4.00451,000
2009-09-23$4.06$4.06714,000
2009-09-22$4.08$4.08492,000
2009-09-21$4.06$4.06461,000
2009-09-18$4.11$4.111,174,000
2009-09-17$4.14$4.141,093,000
2009-09-16$4.03$4.031,109,000
2009-09-15$3.91$3.91311,000
2009-09-14$3.93$3.93431,000
2009-09-11$3.87$3.87384,000
2009-09-10$3.86$3.86311,000
2009-09-09$3.84$3.84589,000
2009-09-08$3.77$3.77914,000
2009-09-04$3.70$3.70410,000
2009-09-03$3.67$3.671,143,000
2009-09-02$3.68$3.681,005,000
2009-09-01$3.74$3.741,541,000
2009-08-31$3.79$3.79851,000
2009-08-28$3.84$3.84470,000
2009-08-27$3.87$3.872,312,000
2009-08-26$3.91$3.91599,000
2009-08-25$3.93$3.93880,000
2009-08-24$3.95$3.951,359,000
2009-08-21$3.94$3.941,770,000
2009-08-20$3.75$3.751,836,000
2009-08-19$3.71$3.712,230,000
2009-08-18$3.63$3.63817,000
2009-08-17$3.59$3.591,044,000
2009-08-14$3.61$3.612,178,000
2009-08-13$3.64$3.64862,000
2009-08-12$3.68$3.68728,000
2009-08-11$3.65$3.65879,000
2009-08-10$3.71$3.71587,000
2009-08-07$3.68$3.681,228,000
2009-08-06$3.60$3.60848,000
2009-08-05$3.63$3.63562,000
2009-08-04$3.70$3.702,158,000
2009-08-03$3.69$3.691,896,000
2009-07-31$3.67$3.672,338,000
2009-07-30$3.71$3.712,277,000
2009-07-29$3.66$3.665,036,000
2009-07-28$3.62$3.621,949,000
2009-07-27$3.54$3.542,802,000
2009-07-24$3.46$3.462,481,000
2009-07-23$3.40$3.408,866,000
2009-07-22$3.60$3.602,107,000
2009-07-21$3.66$3.661,003,000
2009-07-20$3.65$3.651,859,000
2009-07-17$3.65$3.651,436,000
2009-07-16$3.74$3.74996,000
2009-07-15$3.73$3.731,793,000
2009-07-14$3.61$3.611,536,000
2009-07-13$3.66$3.662,180,000
2009-07-10$3.72$3.72601,000
2009-07-09$3.74$3.741,165,000
2009-07-08$3.78$3.787,202,000
2009-07-07$3.77$3.772,374,000
2009-07-06$3.89$3.891,892,000
2009-07-02$3.86$3.862,486,000
2009-07-01$4.07$4.072,275,000
2009-06-30$3.99$3.992,304,000
2009-06-29$3.95$3.951,407,000
2009-06-26$3.91$3.914,282,000
2009-06-25$3.87$3.871,127,000
2009-06-24$3.83$3.831,362,000
2009-06-23$3.78$3.781,143,000
2009-06-22$3.72$3.721,835,000
2009-06-19$3.83$3.833,184,000
2009-06-18$3.81$3.811,171,000
2009-06-17$3.85$3.851,606,000
2009-06-16$3.81$3.81892,000
2009-06-15$3.95$3.95846,000
2009-06-12$4.01$4.011,037,000
2009-06-11$4.01$4.01797,000
2009-06-10$3.97$3.971,729,000
2009-06-09$3.94$3.94741,000
2009-06-08$3.88$3.881,330,000
2009-06-05$3.90$3.901,668,000
2009-06-04$3.89$3.89787,000
2009-06-03$3.87$3.872,179,000
2009-06-02$3.75$3.751,179,000
2009-06-01$3.72$3.721,201,000
2009-05-29$3.57$3.571,084,000
2009-05-28$3.59$3.591,447,000
2009-05-27$3.63$3.632,059,000
2009-05-26$3.77$3.771,309,000
2009-05-22$3.62$3.621,300,000
2009-05-21$3.62$3.621,086,000
2009-05-20$3.68$3.681,816,000
2009-05-19$3.65$3.651,098,000
2009-05-18$3.68$3.681,080,000
2009-05-15$3.58$3.581,497,000
2009-05-14$3.65$3.651,850,000
2009-05-13$3.60$3.602,253,000
2009-05-12$3.65$3.651,237,000
2009-05-11$3.63$3.631,548,000
2009-05-08$3.57$3.572,374,000
2009-05-07$3.47$3.472,899,000
2009-05-06$3.61$3.611,715,000
2009-05-05$3.64$3.641,766,000
2009-05-04$3.68$3.681,485,000
2009-05-01$3.73$3.731,136,000
2009-04-30$3.71$3.711,927,000
2009-04-29$3.75$3.752,662,000
2009-04-28$3.68$3.682,788,000
2009-04-27$3.58$3.583,337,000
2009-04-24$3.58$3.583,079,000
2009-04-23$3.50$3.502,764,000
2009-04-22$3.34$3.341,392,000
2009-04-21$3.36$3.361,288,000
2009-04-20$3.30$3.304,926,000
2009-04-17$3.38$3.381,570,000
2009-04-16$3.33$3.331,771,000
2009-04-15$3.27$3.271,001,000
2009-04-14$3.22$3.22921,000
2009-04-13$3.27$3.273,480,000
2009-04-09$3.30$3.302,777,000
2009-04-08$3.13$3.134,123,000
2009-04-07$3.16$3.161,288,000
2009-04-06$3.26$3.261,215,000
2009-04-03$3.28$3.281,490,000
2009-04-02$3.24$3.243,867,000
2009-04-01$3.11$3.112,530,000
2009-03-31$3.03$3.033,589,000
2009-03-30$2.97$2.971,751,000
2009-03-27$3.01$3.012,006,000
2009-03-26$3.09$3.092,198,000
2009-03-25$3.01$3.011,313,000
2009-03-24$2.91$2.911,795,000
2009-03-23$2.99$2.993,830,000
2009-03-20$2.79$2.793,017,000
2009-03-19$2.82$2.822,035,000
2009-03-18$2.83$2.833,307,000
2009-03-17$2.64$2.642,917,000
2009-03-16$2.60$2.601,180,000
2009-03-13$2.63$2.632,344,000
2009-03-12$2.65$2.652,954,000
2009-03-11$2.59$2.591,362,000
2009-03-10$2.57$2.573,031,000
2009-03-09$2.42$2.422,583,000
2009-03-06$2.53$2.533,448,000
2009-03-05$2.50$2.505,079,000
2009-03-04$2.59$2.593,041,000
2009-03-03$2.50$2.504,651,000
2009-03-02$2.50$2.504,692,000
2009-02-27$2.55$2.552,646,000
2009-02-26$2.55$2.552,193,000
2009-02-25$2.62$2.622,747,000
2009-02-24$2.64$2.644,274,000
2009-02-23$2.54$2.544,087,000
2009-02-20$2.60$2.6012,677,000
2009-02-19$2.80$2.804,806,000
2009-02-18$2.88$2.883,231,000
2009-02-17$2.87$2.871,993,000
2009-02-13$2.96$2.96888,000
2009-02-12$2.95$2.951,267,000
2009-02-11$2.98$2.981,218,000
2009-02-10$2.95$2.953,206,000
2009-02-09$3.05$3.05884,000
2009-02-06$3.09$3.091,503,000
2009-02-05$2.96$2.961,356,000
2009-02-04$2.97$2.972,367,000
2009-02-03$2.98$2.981,927,000
2009-02-02$3.02$3.021,323,000
2009-01-30$2.96$2.961,394,000
2009-01-29$3.03$3.031,104,000
2009-01-28$3.21$3.211,561,000
2009-01-27$3.03$3.03907,000
2009-01-26$2.98$2.981,274,000
2009-01-23$3.00$3.001,114,000
2009-01-22$3.05$3.051,026,000
2009-01-21$3.13$3.131,417,000
2009-01-20$2.99$2.991,914,000
2009-01-16$3.10$3.101,737,000
2009-01-15$3.14$3.141,225,000
2009-01-14$3.04$3.041,454,000
2009-01-13$3.23$3.231,652,000
2009-01-12$3.26$3.262,197,000
2009-01-09$3.34$3.341,143,000
2009-01-08$3.59$3.592,706,000
2009-01-07$3.46$3.462,114,000
2009-01-06$3.45$3.451,808,000
2009-01-05$3.32$3.321,530,000
2009-01-02$3.35$3.351,720,000