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CoStar CSGP

US equityMarket cap rank #1363
$27.66 +$0.28 (+1.02%)
Market closed · Oct 5, 8:20 pm ET · Last extended-hours $27.55 -0.40%
Open$27.25
Prev close$27.38
Day range$27.18 – $27.68
Volume4.93M
Market cap$11.21B
P/E (TTM)153.7
Dividend yield–

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Short interest3.66% of floatDays to cover 2.7 · as of 15 Sep 2026
Short-sale volume share17.5%5-day average of daily volume

Short-sale volume as % of daily volume

10%14%18%22%Sep '26Sep '26Oct '26

Reported short interest has fallen from 3.74% to 3.66% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 14,839,529 3.7% 2.7
31 Aug 2026 18,901,758 4.7% 2.5
14 Aug 2026 16,691,379 4.1% 2.8
31 Jul 2026 16,312,412 4.0% 1.9
15 Jul 2026 16,321,416 4.0% 2.5
30 Jun 2026 15,266,339 3.7% 1.9

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