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 — 2005

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2005-12-30$4.32$4.32773,000
2005-12-29$4.46$4.46294,000
2005-12-28$4.49$4.49420,000
2005-12-27$4.49$4.491,311,000
2005-12-23$4.55$4.55435,000
2005-12-22$4.52$4.52715,000
2005-12-21$4.52$4.521,096,000
2005-12-20$4.53$4.532,031,000
2005-12-19$4.41$4.411,530,000
2005-12-16$4.49$4.492,344,000
2005-12-15$4.48$4.48749,000
2005-12-14$4.45$4.45615,000
2005-12-13$4.50$4.50729,000
2005-12-12$4.52$4.52787,000
2005-12-09$4.55$4.55852,000
2005-12-08$4.53$4.53876,000
2005-12-07$4.56$4.561,984,000
2005-12-06$4.48$4.481,554,000
2005-12-05$4.62$4.62573,000
2005-12-02$4.70$4.70406,000
2005-12-01$4.77$4.771,171,000
2005-11-30$4.69$4.691,168,000
2005-11-29$4.74$4.74455,000
2005-11-28$4.68$4.68922,000
2005-11-25$4.76$4.76124,000
2005-11-23$4.79$4.791,012,000
2005-11-22$4.79$4.791,811,000
2005-11-21$4.78$4.781,153,000
2005-11-18$4.89$4.89841,000
2005-11-17$4.84$4.84365,000
2005-11-16$4.80$4.80911,000
2005-11-15$4.85$4.85849,000
2005-11-14$4.89$4.891,030,000
2005-11-11$4.92$4.921,612,000
2005-11-10$4.83$4.83943,000
2005-11-09$4.79$4.79863,000
2005-11-08$4.83$4.83616,000
2005-11-07$4.86$4.86964,000
2005-11-04$4.88$4.881,068,000
2005-11-03$4.84$4.841,418,000
2005-11-02$4.82$4.82953,000
2005-11-01$4.70$4.70803,000
2005-10-31$4.80$4.801,225,000
2005-10-28$4.69$4.691,332,000
2005-10-27$4.57$4.57721,000
2005-10-26$4.72$4.721,393,000
2005-10-25$4.87$4.872,895,000
2005-10-24$4.60$4.60843,000
2005-10-21$4.49$4.491,291,000
2005-10-20$4.42$4.422,415,000
2005-10-19$4.50$4.50802,000
2005-10-18$4.47$4.47699,000
2005-10-17$4.54$4.54710,000
2005-10-14$4.56$4.56635,000
2005-10-13$4.60$4.602,476,000
2005-10-12$4.59$4.59984,000
2005-10-11$4.59$4.592,323,000
2005-10-10$4.60$4.60154,000
2005-10-07$4.63$4.63254,000
2005-10-06$4.61$4.61651,000
2005-10-05$4.58$4.58991,000
2005-10-04$4.58$4.58922,000
2005-10-03$4.66$4.66852,000
2005-09-30$4.67$4.67542,000
2005-09-29$4.63$4.63768,000
2005-09-28$4.58$4.581,194,000
2005-09-27$4.62$4.62572,000
2005-09-26$4.60$4.601,297,000
2005-09-23$4.61$4.61247,000
2005-09-22$4.66$4.66458,000
2005-09-21$4.58$4.58865,000
2005-09-20$4.67$4.67684,000
2005-09-19$4.79$4.79435,000
2005-09-16$4.83$4.831,240,000
2005-09-15$4.74$4.741,029,000
2005-09-14$4.79$4.794,710,000
2005-09-13$4.55$4.551,139,000
2005-09-12$4.55$4.55899,000
2005-09-09$4.55$4.551,381,000
2005-09-08$4.58$4.581,359,000
2005-09-07$4.69$4.69380,000
2005-09-06$4.76$4.762,346,000
2005-09-02$4.57$4.571,007,000
2005-09-01$4.66$4.66483,000
2005-08-31$4.68$4.68827,000
2005-08-30$4.62$4.62562,000
2005-08-29$4.62$4.62576,000
2005-08-26$4.55$4.55730,000
2005-08-25$4.61$4.611,090,000
2005-08-24$4.63$4.63926,000
2005-08-23$4.61$4.61725,000
2005-08-22$4.58$4.58637,000
2005-08-19$4.59$4.59496,000
2005-08-18$4.60$4.60555,000
2005-08-17$4.68$4.68357,000
2005-08-16$4.66$4.66769,000
2005-08-15$4.82$4.82591,000
2005-08-12$4.71$4.71815,000
2005-08-11$4.80$4.80918,000
2005-08-10$4.68$4.68752,000
2005-08-09$4.75$4.75698,000
2005-08-08$4.75$4.75537,000
2005-08-05$4.82$4.82591,000
2005-08-04$4.91$4.91699,000
2005-08-03$4.96$4.96941,000
2005-08-02$4.98$4.981,632,000
2005-08-01$4.84$4.841,492,000
2005-07-29$4.75$4.751,186,000
2005-07-28$4.72$4.721,331,000
2005-07-27$4.66$4.66974,000
2005-07-26$4.55$4.552,078,000
2005-07-25$4.62$4.621,439,000
2005-07-22$4.76$4.762,773,000
2005-07-21$4.77$4.771,829,000
2005-07-20$4.70$4.701,513,000
2005-07-19$4.67$4.67824,000
2005-07-18$4.55$4.55484,000
2005-07-15$4.63$4.63296,000
2005-07-14$4.62$4.62796,000
2005-07-13$4.63$4.63480,000
2005-07-12$4.65$4.65666,000
2005-07-11$4.68$4.681,125,000
2005-07-08$4.60$4.601,369,000
2005-07-07$4.51$4.51865,000
2005-07-06$4.48$4.481,772,000
2005-07-05$4.60$4.60694,000
2005-07-01$4.49$4.49771,000
2005-06-30$4.36$4.361,157,000
2005-06-29$4.41$4.411,443,000
2005-06-28$4.46$4.461,593,000
2005-06-27$4.27$4.27855,000
2005-06-24$4.27$4.271,172,000
2005-06-23$4.37$4.37808,000
2005-06-22$4.53$4.53746,000
2005-06-21$4.49$4.49931,000
2005-06-20$4.44$4.44547,000
2005-06-17$4.49$4.491,312,000
2005-06-16$4.45$4.45623,000
2005-06-15$4.33$4.33732,000
2005-06-14$4.34$4.34964,000
2005-06-13$4.22$4.22545,000
2005-06-10$4.20$4.20602,000
2005-06-09$4.21$4.21319,000
2005-06-08$4.18$4.18727,000
2005-06-07$4.17$4.17846,000
2005-06-06$4.15$4.15671,000
2005-06-03$4.16$4.16698,000
2005-06-02$4.17$4.17735,000
2005-06-01$4.14$4.141,220,000
2005-05-31$4.02$4.02536,000
2005-05-27$4.03$4.03636,000
2005-05-26$4.04$4.04757,000
2005-05-25$3.97$3.97680,000
2005-05-24$4.02$4.021,268,000
2005-05-23$3.98$3.98862,000
2005-05-20$4.01$4.01683,000
2005-05-19$4.00$4.00956,000
2005-05-18$3.92$3.921,342,000
2005-05-17$3.88$3.88945,000
2005-05-16$3.87$3.87862,000
2005-05-13$3.87$3.87870,000
2005-05-12$3.85$3.851,326,000
2005-05-11$3.86$3.86699,000
2005-05-10$3.85$3.851,111,000
2005-05-09$3.85$3.85933,000
2005-05-06$3.81$3.81692,000
2005-05-05$3.81$3.811,167,000
2005-05-04$3.82$3.821,878,000
2005-05-03$3.81$3.811,694,000
2005-05-02$3.92$3.921,230,000
2005-04-29$3.96$3.964,481,000
2005-04-28$3.82$3.822,657,000
2005-04-27$3.74$3.741,464,000
2005-04-26$3.69$3.691,149,000
2005-04-25$3.79$3.791,726,000
2005-04-22$3.79$3.791,697,000
2005-04-21$3.72$3.728,246,000
2005-04-20$3.37$3.3710,244,000
2005-04-19$3.45$3.452,117,000
2005-04-18$3.38$3.381,868,000
2005-04-15$3.39$3.392,035,000
2005-04-14$3.49$3.491,150,000
2005-04-13$3.58$3.58722,000
2005-04-12$3.62$3.622,027,000
2005-04-11$3.59$3.591,052,000
2005-04-08$3.63$3.631,056,000
2005-04-07$3.68$3.681,334,000
2005-04-06$3.70$3.703,361,000
2005-04-05$3.57$3.571,814,000
2005-04-04$3.57$3.572,485,000
2005-04-01$3.62$3.621,987,000
2005-03-31$3.69$3.691,641,000
2005-03-30$3.72$3.724,278,000
2005-03-29$3.75$3.75679,000
2005-03-28$3.76$3.761,165,000
2005-03-24$3.74$3.741,315,000
2005-03-23$3.77$3.771,462,000
2005-03-22$3.80$3.80522,000
2005-03-21$3.80$3.80893,000
2005-03-18$3.80$3.801,784,000
2005-03-17$3.80$3.80742,000
2005-03-16$3.79$3.79857,000
2005-03-15$3.83$3.831,006,000
2005-03-14$3.77$3.771,683,000
2005-03-11$3.71$3.71903,000
2005-03-10$3.71$3.711,652,000
2005-03-09$3.72$3.72636,000
2005-03-08$3.74$3.74808,000
2005-03-07$3.76$3.761,280,000
2005-03-04$3.92$3.922,408,000
2005-03-03$3.77$3.771,424,000
2005-03-02$3.71$3.711,174,000
2005-03-01$3.70$3.701,177,000
2005-02-28$3.68$3.682,461,000
2005-02-25$3.75$3.752,775,000
2005-02-24$3.80$3.803,236,000
2005-02-23$3.91$3.912,410,000
2005-02-22$3.88$3.882,847,000
2005-02-18$3.82$3.825,773,000
2005-02-17$3.96$3.967,447,000
2005-02-16$4.05$4.052,434,000
2005-02-15$4.16$4.16872,000
2005-02-14$4.20$4.20636,000
2005-02-11$4.24$4.24907,000
2005-02-10$4.20$4.20257,000
2005-02-09$4.24$4.24708,000
2005-02-08$4.33$4.33695,000
2005-02-07$4.33$4.331,188,000
2005-02-04$4.12$4.122,166,000
2005-02-03$4.12$4.125,086,000
2005-02-02$4.17$4.17920,000
2005-02-01$4.24$4.24747,000
2005-01-31$4.30$4.30958,000
2005-01-28$4.30$4.30631,000
2005-01-27$4.30$4.30658,000
2005-01-26$4.37$4.37879,000
2005-01-25$4.32$4.321,631,000
2005-01-24$4.37$4.372,110,000
2005-01-21$4.39$4.393,485,000
2005-01-20$4.37$4.37882,000
2005-01-19$4.37$4.37416,000
2005-01-18$4.37$4.37711,000
2005-01-14$4.36$4.36562,000
2005-01-13$4.32$4.321,539,000
2005-01-12$4.35$4.35877,000
2005-01-11$4.35$4.35430,000
2005-01-10$4.39$4.39851,000
2005-01-07$4.23$4.231,310,000
2005-01-06$4.40$4.40828,000
2005-01-05$4.41$4.411,641,000
2005-01-04$4.46$4.461,287,000
2005-01-03$4.62$4.621,708,000