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 — 2026

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2026-09-04$31.35208,622
2026-09-03$31.83218,820
2026-09-02$31.89343,441
2026-09-01$32.00312,580
2026-08-31$31.95444,437
2026-08-28$31.65322,891
2026-08-27$31.34$31.345,424,300$32.21405,233
2026-08-26$32.14$32.144,799,300$32.31326,623
2026-08-25$32.81$32.814,915,500$32.59340,677
2026-08-24$32.84$32.845,035,000$32.48417,024
2026-08-21$32.26$32.264,751,500$32.51357,638
2026-08-20$32.26$32.266,621,600$33.66357,582
2026-08-19$33.73$33.735,818,500$31.33509,145
2026-08-18$31.38$31.383,845,900$32.12220,378
2026-08-17$31.35$31.354,936,400$32.39260,671
2026-08-14$32.38$32.385,996,700$33.21546,279
2026-08-13$33.05$33.057,965,600$30.78796,398
2026-08-12$30.50$30.504,275,600$30.68402,130
2026-08-11$31.12$31.124,039,400$31.19313,191
2026-08-10$31.48$31.486,164,300$30.16410,939
2026-08-07$30.24$30.246,205,500$29.96531,851
2026-08-06$29.58$29.587,812,200$29.88690,064
2026-08-05$30.21$30.216,644,400$30.61399,028
2026-08-04$29.82$29.825,794,200$29.57308,261
2026-08-03$30.03$30.036,026,900$29.56405,020
2026-07-31$28.76$28.768,230,500$28.98559,051
2026-07-30$29.46$29.4612,134,100$28.27965,396
2026-07-29$29.83$29.8317,581,000$26.011,139,688
2026-07-28$30.33$30.339,819,900$29.84622,620
2026-07-27$29.17$29.179,804,600$28.34625,654
2026-07-24$27.66$27.666,846,800$27.41392,645
2026-07-23$27.14$27.147,157,600$27.98391,739
2026-07-22$27.69$27.695,635,600$28.76324,127
2026-07-21$28.50$28.505,576,400$28.82361,900
2026-07-20$29.68$29.686,352,200$29.50607,528
2026-07-17$29.78$29.785,898,200
2026-07-16$30.37$30.378,941,700
2026-07-15$28.49$28.497,340,400
2026-07-14$27.68$27.6814,088,800
2026-07-13$28.77$28.776,451,100
2026-07-10$28.39$28.395,916,200
2026-07-09$29.19$29.194,955,400
2026-07-08$29.34$29.345,101,300
2026-07-07$29.87$29.876,002,400
2026-07-06$28.70$28.706,720,800
2026-07-02$30.00$30.004,735,800
2026-07-01$29.36$29.366,235,100
2026-06-30$28.32$28.326,929,800
2026-06-29$29.32$29.325,599,300
2026-06-26$30.25$30.258,813,800
2026-06-25$28.64$28.646,449,800
2026-06-24$29.81$29.816,675,200
2026-06-23$30.26$30.268,313,800
2026-06-22$29.22$29.227,025,600
2026-06-18$30.12$30.1216,140,800
2026-06-17$30.46$30.469,728,900
2026-06-16$31.97$31.975,749,300
2026-06-15$32.04$32.046,018,600
2026-06-12$32.84$32.844,914,800
2026-06-11$32.65$32.657,751,600
2026-06-10$34.23$34.236,276,100
2026-06-09$33.93$33.936,634,900
2026-06-08$33.39$33.397,712,700
2026-06-05$33.89$33.896,998,700
2026-06-04$33.66$33.667,347,900
2026-06-03$33.40$33.409,461,300
2026-06-02$33.66$33.669,188,500
2026-06-01$33.86$33.868,038,400
2026-05-29$32.20$32.207,788,800
2026-05-28$32.30$32.306,747,800
2026-05-27$32.32$32.325,016,900
2026-05-26$32.52$32.525,964,300
2026-05-22$33.95$33.954,615,700
2026-05-21$33.93$33.935,411,000
2026-05-20$34.01$34.015,009,200
2026-05-19$33.80$33.806,596,500
2026-05-18$33.20$33.2010,165,100
2026-05-15$32.68$32.6837,834,000
2026-05-14$31.85$31.857,866,800
2026-05-13$31.97$31.978,482,100
2026-05-12$33.05$33.058,260,700
2026-05-11$32.92$32.928,214,700
2026-05-08$32.77$32.777,105,400
2026-05-07$34.98$34.987,712,000
2026-05-06$34.07$34.075,466,000
2026-05-05$34.90$34.905,587,200
2026-05-04$35.38$35.386,712,500
2026-05-01$34.72$34.726,367,800
2026-04-30$34.61$34.617,908,200
2026-04-29$34.14$34.1415,388,100
2026-04-28$35.96$35.967,354,900
2026-04-27$36.24$36.245,669,100
2026-04-24$36.44$36.444,343,200
2026-04-23$37.38$37.386,626,600
2026-04-22$38.77$38.774,509,700
2026-04-21$38.91$38.914,004,100
2026-04-20$40.06$40.063,782,800
2026-04-17$39.72$39.723,993,900
2026-04-16$40.04$40.046,694,100
2026-04-15$39.31$39.316,507,500
2026-04-14$37.60$37.607,372,300
2026-04-13$37.06$37.0611,553,600
2026-04-10$36.48$36.485,175,700
2026-04-09$37.32$37.325,766,600
2026-04-08$38.82$38.826,050,800
2026-04-07$39.48$39.484,277,400
2026-04-06$41.18$41.185,477,100
2026-04-02$39.95$39.955,797,800
2026-04-01$39.63$39.635,478,000
2026-03-31$40.34$40.345,481,900
2026-03-30$40.88$40.886,667,800
2026-03-27$39.77$39.776,295,200
2026-03-26$41.30$41.304,984,300
2026-03-25$41.41$41.415,753,000
2026-03-24$41.46$41.464,556,800
2026-03-23$42.91$42.917,209,300
2026-03-20$42.90$42.9015,182,900
2026-03-19$42.82$42.826,127,000
2026-03-18$43.11$43.118,457,700
2026-03-17$44.25$44.254,299,000
2026-03-16$43.62$43.625,905,000
2026-03-13$43.63$43.635,270,600
2026-03-12$43.36$43.366,289,500
2026-03-11$45.34$45.345,274,600
2026-03-10$46.33$46.334,530,900
2026-03-09$48.42$48.425,632,900
2026-03-06$48.38$48.383,959,600
2026-03-05$48.91$48.915,872,000
2026-03-04$47.60$47.604,337,500
2026-03-03$46.78$46.785,592,200
2026-03-02$45.17$45.176,342,200
2026-02-27$44.63$44.638,059,300
2026-02-26$45.00$45.007,624,500
2026-02-25$44.78$44.7811,638,500
2026-02-24$49.15$49.155,596,600
2026-02-23$47.87$47.877,213,500
2026-02-20$49.87$49.877,901,800
2026-02-19$49.07$49.075,216,200
2026-02-18$48.94$48.947,988,300
2026-02-17$45.74$45.748,854,700
2026-02-13$44.99$44.995,526,700
2026-02-12$45.03$45.0310,329,900
2026-02-11$47.87$47.876,227,400
2026-02-10$50.85$50.855,956,300
2026-02-09$50.96$50.968,650,100
2026-02-06$50.28$50.286,756,600
2026-02-05$50.99$50.997,443,200
2026-02-04$52.34$52.3411,033,500
2026-02-03$51.73$51.7312,882,700
2026-02-02$61.18$61.186,010,900
2026-01-30$61.50$61.504,662,900
2026-01-29$61.93$61.934,517,200
2026-01-28$65.20$65.204,374,800
2026-01-27$66.22$66.2217,993,100
2026-01-26$65.81$65.814,026,500
2026-01-23$65.60$65.604,985,900
2026-01-22$66.26$66.267,257,200
2026-01-21$64.77$64.776,367,500
2026-01-20$63.82$63.825,721,400
2026-01-16$65.34$65.347,622,900
2026-01-15$63.38$63.385,471,500
2026-01-14$63.87$63.878,203,200
2026-01-13$61.82$61.8212,699,200
2026-01-12$59.30$59.308,883,200
2026-01-09$58.49$58.497,690,600
2026-01-08$61.36$61.368,337,900
2026-01-07$61.66$61.6613,759,000
2026-01-06$67.20$67.203,143,300
2026-01-05$66.42$66.424,369,100
2026-01-02$65.69$65.694,368,100