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CoStar Group (CSGP, Real Estate Services) Stock Valuation & Fair Value Favorable on our tests

CoStar Group (CSGP, Real Estate Services) trades at a blended P/E of 22.1, about 68% below its historical normal valuation, with a forward growth estimate of 28.0% and a PEG of 0.79. Analysts' one-year estimates have been hit 45% of the time. Priced at its historical normal P/E of 68.7 on the same blended earnings, the 2026-10-02 close of $27.38 corresponds to about $85.10 a share. This is a valuation reference, not a price target.

DATA AS OF 2026-10-05
Blended P/E
22.1
Normal P/E
68.7
PEG
0.79
Fwd growth
28.0%
Div yield
0.0%
RSI (14)
55.9
Neutral
Technical context
  • Price $29.81 at the 2026-10-08 close, 4.0% above the 20-day average ($28.67) and 1.3% below the 50-day ($30.19).
  • RSI (14) at 55.9.
  • 52-week range $26.95 to $78.23: the price is 61.9% below the high and 10.6% above the low.

The Street vs SeerForecast

Wall Street's mean price target for CSGP is $37.30 across 20 analysts, 25.1% above the current price. The average analyst rating is Buy. Our SeerForecast read of the same stock, formed without analyst targets: favorable on our tests. When the two disagree, start your digging there.

Valuation flags

Verdict history

tickerseer's rating has been favorable on our tests since 2026-06-10.

Blended P/E and rating by weekBlended P/E moved from 31.4 to 22.1 between 2026-06-10 and 2026-10-02, against a normal P/E of 68.7, with 5 rating changes over 36 recorded weeks.2026-06-10: P/E 31.4, Favorable on our tests, recalculated for the week of 2026-06-102026-06-12: P/E 31.4, Favorable on our tests, recalculated for the week of 2026-06-142026-06-16: P/E 31.4, Favorable on our tests, recalculated for the week of 2026-06-162026-06-18: P/E 31.4, Favorable on our tests, recalculated for the week of 2026-06-212026-07-02: P/E 26.4, Strong on our tests, recalculated for the week of 2026-07-022026-07-06: P/E 26.9, Strong on our tests, recalculated for the week of 2026-07-062026-07-09: P/E 26.9, Strong on our tests, recalculated for the week of 2026-07-092026-07-10: P/E 25.2, Strong on our tests, recalculated for the week of 2026-07-122026-07-13: P/E 25.2, Strong on our tests, recalculated for the week of 2026-07-132026-07-14: P/E 25.2, Strong on our tests, recalculated for the week of 2026-07-142026-07-20: P/E 26.2, Strong on our tests, recalculated for the week of 2026-07-202026-07-22: P/E 26.2, Strong on our tests, recalculated for the week of 2026-07-222026-07-24: P/E 24.1, Mixed on our tests, recalculated for the week of 2026-07-252026-07-27: P/E 24.1, Mixed on our tests, recalculated for the week of 2026-07-272026-07-31: P/E 25.5, Mixed on our tests, recalculated for the week of 2026-07-312026-07-31: P/E 24.9, Mixed on our tests, recorded live 2026-08-032026-08-07: P/E 25.4, Strong on our tests, recalculated for the week of 2026-08-072026-08-07: P/E 26.0, Strong on our tests, recorded live 2026-08-102026-08-14: P/E 28.2, Strong on our tests, recalculated for the week of 2026-08-142026-08-14: P/E 27.6, Strong on our tests, recorded live 2026-08-172026-08-21: P/E 27.3, Strong on our tests, recalculated for the week of 2026-08-212026-08-21: P/E 27.3, Strong on our tests, recorded live 2026-08-242026-08-27: P/E 27.3, Strong on our tests, recalculated for the week of 2026-08-272026-08-28: P/E 26.3, Strong on our tests, recalculated for the week of 2026-08-282026-08-28: P/E 27.0, Strong on our tests, recalculated for the week of 2026-08-302026-08-28: P/E 27.0, Strong on our tests, recorded live 2026-08-312026-09-04: P/E 25.7, Strong on our tests, recalculated for the week of 2026-09-052026-09-04: P/E 25.7, Strong on our tests, recorded live 2026-09-072026-09-11: P/E 25.1, Strong on our tests, recalculated for the week of 2026-09-122026-09-11: P/E 25.1, Strong on our tests, recorded live 2026-09-142026-09-18: P/E 23.8, Strong on our tests, recalculated for the week of 2026-09-192026-09-18: P/E 23.8, Strong on our tests, recorded live 2026-09-212026-09-25: P/E 22.8, Strong on our tests, recalculated for the week of 2026-09-262026-09-25: P/E 22.8, Mixed on our tests, recorded live 2026-09-282026-10-02: P/E 22.1, Favorable on our tests, recalculated for the week of 2026-10-032026-10-02: P/E 22.1, Favorable on our tests, recorded live 2026-10-0540.060.0Jun 10Jul 8Aug 6Sep 4Oct 2Normal P/E 68.7
Strong on our testsFavorable on our testsMixed on our testsLarger dot: a stronger reading

Not every point was recorded live. Points marked recalculated apply today's valuation rules to the metrics tickerseer archived that week.

Selected weeks: the first, the latest, every week the rating moved, and the cheapest and dearest.

WeekBlended P/EPremium to normal P/ERating
2026-06-10P/E 31.4-54%Favorable on our tests (recalculated)
2026-07-02P/E 26.4-62%Strong on our tests (recalculated)
2026-07-25P/E 24.1-65%Mixed on our tests (recalculated)
2026-08-07P/E 25.4-63%Strong on our tests (recalculated)
2026-09-28P/E 22.8-67%Mixed on our tests (across a rating rules change)
2026-10-03P/E 22.1-68%Favorable on our tests (recalculated)
2026-10-05P/E 22.1-68%Favorable on our tests ← now
Show all 36 weeks
WeekBlended P/EPremium to normal P/ERating
2026-06-10P/E 31.4-54%Favorable on our tests (recalculated)
2026-06-14P/E 31.4-54%Favorable on our tests (recalculated)
2026-06-16P/E 31.4-54%Favorable on our tests (recalculated)
2026-06-21P/E 31.4-54%Favorable on our tests (recalculated)
2026-07-02P/E 26.4-62%Strong on our tests (recalculated)
2026-07-06P/E 26.9-61%Strong on our tests (recalculated)
2026-07-09P/E 26.9-61%Strong on our tests (recalculated)
2026-07-12P/E 25.2-63%Strong on our tests (recalculated)
2026-07-13P/E 25.2-63%Strong on our tests (recalculated)
2026-07-14P/E 25.2-63%Strong on our tests (recalculated)
2026-07-20P/E 26.2-62%Strong on our tests (recalculated)
2026-07-22P/E 26.2-62%Strong on our tests (recalculated)
2026-07-25P/E 24.1-65%Mixed on our tests (recalculated)
2026-07-27P/E 24.1-65%Mixed on our tests (recalculated)
2026-07-31P/E 25.5-63%Mixed on our tests (recalculated)
2026-08-03P/E 24.9-64%Mixed on our tests
2026-08-07P/E 25.4-63%Strong on our tests (recalculated)
2026-08-10P/E 26.0-62%Strong on our tests
2026-08-14P/E 28.2-59%Strong on our tests (recalculated)
2026-08-17P/E 27.6-60%Strong on our tests
2026-08-21P/E 27.3-60%Strong on our tests (recalculated)
2026-08-24P/E 27.3-60%Strong on our tests
2026-08-27P/E 27.3-60%Strong on our tests (recalculated)
2026-08-28P/E 26.3-62%Strong on our tests (recalculated)
2026-08-30P/E 27.0-61%Strong on our tests (recalculated)
2026-08-31P/E 27.0-61%Strong on our tests
2026-09-05P/E 25.7-63%Strong on our tests (recalculated)
2026-09-07P/E 25.7-63%Strong on our tests
2026-09-12P/E 25.1-63%Strong on our tests (recalculated)
2026-09-14P/E 25.1-63%Strong on our tests
2026-09-19P/E 23.8-65%Strong on our tests (recalculated)
2026-09-21P/E 23.8-65%Strong on our tests
2026-09-26P/E 22.8-67%Strong on our tests (recalculated)
2026-09-28P/E 22.8-67%Mixed on our tests (across a rating rules change)
2026-10-03P/E 22.1-68%Favorable on our tests (recalculated)
2026-10-05P/E 22.1-68%Favorable on our tests ← now

Frequently asked questions

Is CoStar Group stock overvalued?

At a blended P/E of 22.1 versus its historical normal P/E of 68.7, CoStar Group trades about 68% below its typical valuation, with a PEG of 0.79 on 28.0% forward growth. tickerseer currently rates it favorable on our tests.

What is CoStar Group's fair value and PEG?

CoStar Group trades at a blended P/E of 22.1 against a historical normal P/E of 68.7, a PEG of 0.79, and a forward growth estimate of 28.0%. Priced at its historical normal P/E of 68.7 on the same blended earnings, the 2026-10-02 close of $27.38 corresponds to about $85.10 a share. This is a valuation reference, not a price target.

Has tickerseer's rating of CoStar Group changed?

tickerseer's rating has been favorable on our tests since 2026-06-10.

What is the analyst price target for CoStar Group?

The mean Wall Street price target for CoStar Group is $37.30 across 20 analysts, 25.1% above the current price. tickerseer's SeerForecast verdict is formed independently of analyst targets.

Industry: Real Estate Services. Create a free account to see the full analysis: the SeerAI score, its five quality sub-scores, valuation history, and the AI research note. Options setups and metric history are part of the paid plans.

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