Analyst Report: CSGP

1. EXECUTIVE SUMMARY

CoStar fell 13.96% on Wednesday October 28 to $27.54, on volume of 18,319,100 shares, which is 2.92x the 50-session average. The Q3 report released after the close on October 27 showed revenue of $952 million, up 14%, and adjusted EBITDA of $229 million, above the top of the company's $190 million to $210 million guidance range. Net new bookings of $37 million, against $84 million a year earlier, fell below management's own expectations, and TIKR reports that management blamed economic headwinds and a sales force growing more slowly than planned. Several brokers cut price targets the same morning. Real estate peers moved by about 1% or less, so the decline belongs to CoStar alone. The same pattern, a profit beat with weak bookings, produced a double-digit drop after the Q2 report in July. The next catalyst is the Q4 bookings figure, and CoStar has not confirmed its date.

2. THE CATALYST

CoStar published Q3 2026 results through Business Wire at 1:05 PM PDT on October 27, after the 4 PM ET close, so the first full session to react was October 28. The stock opened at $30.00 against a prior close of $32.01 and touched a low of $26.86 before closing at $27.54.

Management said the bookings figure was below its expectations and, per TIKR, cited economic headwinds and slower sales force growth. Yahoo Finance/StockStory attributed the shortfall to attrition in inside sales. The two explanations differ in wording but both point to bookings.

The release also raised full-year 2026 adjusted EBITDA guidance to $820–840 million and full-year revenue guidance to $3.75–3.77 billion. Q4 guidance is revenue of $976–996 million (about 10% growth at the midpoint), adjusted EBITDA of $275–295 million and adjusted EPS of $0.46–0.50. The same release announced a $730 million agreement to acquire Vexcel, an aerial imagery business. TIKR says the deal is funded from cash (about $500 million at the end of September) plus a credit line.

MarketBeat reports that BTIG cut its target the same morning the stock gapped lower. Keefe, Bruyette & Woods had already cut its target on the evening of October 27 (CNN/TipRanks).

The 5.01% fall on October 27, before the release, has no explanation in the sources reviewed.

3. COMPANY PROFILE

CoStar (Real Estate sector, Real Estate Services industry) provides information, analytics and online marketplace services to the real estate industry across the United States, Australia, Canada, Europe, Asia Pacific and Latin America. Its products include CoStar Property, Leasing, Sales and Owners. The market cap is $11.16bn.

Recent record, from the brief:

• Q2 2026 (reported July 28): revenue of $925 million and net new bookings of $69 million, up 3% sequentially and down 26% from a year earlier (Investing.com). Full-year revenue guidance was cut and adjusted EBITDA guidance held (TIKR).
• Buybacks: 2.4 million shares for $82.1 million in Q2, bringing 2026 repurchases to 13.75 million shares for $587 million (Q2 call transcript).
• Costs: management says 2026 savings run about $150 million above the original plan, with at least $200 million more identified over 12 to 18 months, and it keeps the 2028 adjusted EBITDA target of $1.25 billion (CoStar release).

4. DEEP DIVE ANALYSIS

Do fundamentals justify the move? Profit results and guidance improved, while the bookings line, which feeds future subscription revenue, deteriorated. Q3 bookings of $37 million compare with $69 million in Q2 and $84 million a year earlier. Investors appear to have valued the forward growth indicator over the earnings beat (inference). The Q4 revenue guide of roughly 10% growth, against 14% in Q3, fits that reading.

Comparable episode. After the Q2 report on July 28 the stock fell about 12% after hours on the revenue guidance cut and the 26% bookings decline (Investing.com), followed by downgrades and target cuts the next day. TIKR called it the sharpest single-day repricing in its table. The stock's 52-week low of $25.89 came on July 29. Both episodes combined profit strength with bookings weakness.

Peers. AMT -0.04%, WELL +0.21%, PLD -0.99%, EQIX +0.83%, CCI -0.15% and O -1.04% over the same period, while the S&P 500 rose 0.28%. The research assistant found no sector news in the window.

Analyst reaction.

GuruFocus dates the JPMorgan cut to October 6, while MarketBeat dates it to October 28, so the timing is unverified. TradingView reports that the 19-analyst average target fell from $36.84 to $35.68. Other sources give averages between $39 and $40, so consensus figures differ by methodology and are not comparable.

Bull case. Adjusted EBITDA beat the guidance range, full-year guidance rose, and cost savings are running ahead of plan. The forward P/E is 15.6. TIKR puts the pre-drop multiple at about 19x against a five-year average of 66x, with the five-year low at 17x in September. Management expects bookings to improve in Q4. Most brokers kept constructive ratings.

Bear case. Bookings fell short for the second quarter in a row, and the explanations (a slow-growing sales force, attrition, economic headwinds) are operational. The $730 million Vexcel deal will draw on a cash balance of about $500 million plus a credit line, and its terms beyond the headline price are unverified. The trailing P/E of 183.6 reflects depressed trailing earnings. The shares are down 58.08% year to date.

5. TECHNICAL SNAPSHOT

The close of $27.54 is the lowest in the ten-session table, so no nearer support appears in the closes; the 52-week low of $25.89 from July 29 sits about 6% below. The price is under both the 50-day average of $30.48 and the 200-day average of $37.01, and it is 65% below the 52-week high of $78.95. Volume of 18.3 million shares, 2.92x the 50-session average, shows heavy participation in the sell-off. The nearest resistance is the October 27 close of $32.01. The October 22 volume of 8.3 million on a 7.75% gain was the only other session in the table above 8 million.

6. RISK FACTORS

• Bookings: another weak quarter would repeat the pattern of July and October.
• Sales force: attrition and slow hiring are named by sources as drivers, and the fix takes time.
• Vexcel: closing timing is not confirmed, and the deal consumes cash and adds borrowing.
• Cost plan: the timing of the further $200 million in savings is unconfirmed.
• Unexplained selling: the October 27 decline before the release has no identified cause.
• Dated catalysts: CoStar has not confirmed the Q4 2026 results date (MarketBeat). The Q4 2025 date was announced on February 4, 2026 for a February 24 release, which suggests a notice of about three weeks (inference). The Q4 guide calls for adjusted EPS of $0.46–0.50.

7. ACTIONABLE OUTLOOK

Short term (1-2 weeks): The stock trades near the July low of $25.89 after a gap down on 2.92x volume. Further target revisions are the main near-term news. A hold above $25.89 would keep the July base intact, and a close below it would set a new 52-week low. The $32.01 close marks the first resistance.

Medium term (1-3 months): Direction depends on evidence that bookings recover, along with any Vexcel closing details and a confirmed Q4 date. Management guides to a Q4 improvement, and TIKR names that print as the one to watch. Delivery of the Q4 EBITDA guide of $275–295 million would support the earnings side of the case.

Long term: The thesis of rising profitability and the $1.25 billion 2028 adjusted EBITDA target is intact in the company's guidance. The growth leg has weakened, because bookings have now missed twice, and that is the part of the thesis requiring proof. This is analysis only and not personal financial advice.