Why insider trading matters?

Numerous studies have examined whether there is evidence that U.S. insiders systematically trade on private information despite the legal deterrence. The consensus appears to be that insider purchases (but not sales) tend to be followed by positive abnormal stock price performance, particularly for small growth stocks.

- Prof. B. Espen Eckbo, Dartmouth College
COSTAR GROUP, INC. (CSGP)
Sector: Real Estate; Industry: Real Estate Services

CoStar Group, Inc. provides information, analytics, and online marketplaces to the commercial real estate industry in the United States and the United Kingdom. It also provides CoStar COMPS Professional that covers comparable commercial real estate sales information; CoStar Market Analytics to view and report on aggregated market and submarket trends; CoStar Tenant, an online business-to-business prospecting and analytical tool; CoStar Lease Comps, a solution to capture, manage, and maintain lease data; CoStar Lease Analysis, a workflow tool; and CoStar Public Record, a searchable database of commercially-zoned parcels. Further, it provides apartment marketing sites, such as Apartments.com, ApartmentFinder.com, ForRent.com, ApartmentHomeLiving.com, Apartamentos.com, WestsideRentals.com, AFTER55.com, CorporateHousing.com and ForRentUniversity.com; LoopNet Premium Lister and LoopNet Signature Ads for commercial real estate professionals; Realla, a commercial property listings and data management platform; LandsofAmerica, LandAndFarm, and LandWatch online marketplaces for rural land for sale; and BizBuySell, BizQuest, FindaFranchise online marketplaces for operating businesses for sale. CoStar Group, Inc. was founded in 1987 and is headquartered in Washington, the District of Columbia.


Trade Date Insider Title Buy/Sell #Shares Price Value Option
2021-11-11 Wheeler Scott T Chief Financial Officer Sell 85 $81.72 $6,946 No
2021-11-05 Kaplan Laura Cox Director Sell 4,040 $83.29 $336,492 No
2021-10-29 Hill John W Director Sell 9,235 $86.97 $803,170 No
2021-04-30 Kaplan Laura Cox Director Sell 1,062 $869.03 $922,910 No
2021-03-23 SAINT FREDERICK G. President, Marketplaces Sell 7,834 $831.70 $6,515,538 Yes
2021-03-16 Wheeler Scott T Chief Financial Officer Sell 7,326 $843.28 $6,177,869 Yes
2021-03-10 FLORANCE ANDREW C President and CEO Sell 19,570 $818.37 $16,015,501 No
2020-09-02 Ruggles Lisa Senior VP, Global Research Sell 7,596 $870.00 $6,608,520 Yes
2020-08-27 FLORANCE ANDREW C President and CEO Sell 31,168 $849.91 $26,489,995 Yes
2020-08-12 Linnington Matthew Executive VP, Sales Sell 2,419 $826.32 $1,998,868 No
2020-08-04 Wheeler Scott T Chief Financial Officer Sell 12,002 $826.71 $9,922,173 Yes
2020-05-07 KLEIN MICHAEL R Director Sell 15,000 $639.18 $9,587,715 No
2020-03-04 Steinberg David Jay Director Sell 850 $714.00 $606,900 No
2020-03-03 Wheeler Scott T Chief Financial Officer Sell 6,005 $703.26 $4,223,076 Yes
2020-03-02 FLORANCE ANDREW C President and CEO Sell 33,600 $663.90 $22,307,040 Yes
2019-12-31 Hill John W Director Sell 500 $591.90 $295,950 No
2019-11-19 Kaplan Laura Cox Director Sell 576 $591.60 $340,762 No
2019-10-25 NASSETTA CHRISTOPHER J Director Sell 406 $570.99 $231,822 No
2019-07-31 Linnington Matthew Executive VP, Sales Sell 14,651 $617.39 $9,045,381 Yes
2019-07-29 Wheeler Scott T Chief Financial Officer Sell 6,933 $629.50 $4,364,324 Yes
2019-07-26 FLORANCE ANDREW C President and CEO Sell 24,210 $628.64 $15,219,374 No
2019-06-24 Hill John W Director Sell 315 $553.23 $174,267 No
2019-03-01 Ruggles Lisa Senior VP, Global Research Sell 1,538 $466.62 $717,662 No
2019-03-01 Linnington Matthew Executive VP, Sales Sell 4,701 $477.31 $2,243,834 Yes
2019-03-01 Wheeler Scott T Chief Financial Officer Sell 5,396 $476.11 $2,569,090 No
2019-03-04 FLORANCE ANDREW C President and CEO Sell 55,322 $473.38 $26,188,328 Yes
2018-12-26 Hill John W Director Sell 1,042 $330.88 $344,777 No
2018-10-29 NASSETTA CHRISTOPHER J Director Sell 571 $349.67 $199,662 No
2018-08-06 KLEIN MICHAEL R Director Sell 15,000 $420.69 $6,310,350 No
2018-07-30 Linnington Matthew Executive VP, Sales Sell 4,384 $411.93 $1,805,901 Yes

Insider Smart

Carvana Co (CVNA) - One of the best timed insider buying in the crash is from GARCIA ERNEST C. II 10%-owner of CVNA. Bought at 45 and now with a 100%+ profit.

Insider Smart

Delta Airlines (DAL) - From an insider's perspective: airlines are the first ones to go under due to the pandemic. A lot of concerns were raised on possible bankruptcy especially amid by the dump from Buffett. However, insiders of Delta were bold enough to buy when Buffett was fear. And Delta is the only airline bought by insiders post-Buffett-dump.