Current position

Chuck Akre’s Costar Group Inc (CSGP) position

Reported position history, portfolio importance and verified filing changes from public SEC disclosures.

Akre Capital ManagementVerified through Q2 2026
Relationship snapshot

At a glance

The full verified relationship, including prior ownership episodes and exits where supported.

First reportedQ4 2019Earliest verified positive filing snapshot
Latest statusCurrent positionBased on the latest supported relationship state
Peak shares14.52MHighest verified quarter-end share count
Quarters reported26Verified quarters with shares above zero
What happened?

Akre Capital Management first reported Costar Group Inc in Q4 2019. The reported position was increased and reduced across later filings. Akre Capital Management currently reports 11.70M shares. The latest verified filing showed: Bought 13.1% more.

Verified SEC history

Position over time

See the same verified relationship through reported shares, portfolio weight or reported value.

Metric

Gaps indicate periods that cannot be safely connected or where a verified corporate action changes the raw share scale. Stock price, when available, is market context and not a transaction price.

Key filing events

What changed

Latest filing plus the most meaningful reported changes. Unchanged quarters are collapsed by default.

Q2 2026
Bought 13.1% more+1.35M shares · 11.70M shares reported after the change
Filing context

Quarter-end price $28.32 · Estimated holding basis $78.12

Q1 2026
Bought 7.6% more+730.47K shares · 10.35M shares reported after the change
Filing context

Quarter-end price $40.34 · Estimated holding basis $84.62

Q4 2025
Bought 3.3% more+311.32K shares · 9.62M shares reported after the change
Filing context

Quarter-end price $67.24 · Estimated holding basis $87.98

Q3 2025
Sold 0.03% of the position−2.75K shares · 9.31M shares remained
Filing context

Quarter-end price $84.37 · Estimated holding basis $88.67

Q2 2025
Sold 0.05% of the position−4.36K shares · 9.31M shares remained
Filing context

Quarter-end price $80.40 · Estimated holding basis $88.67

Q1 2025
Sold 0.003% of the position−288 shares · 9.31M shares remained
Filing context

Quarter-end price $79.23 · Estimated holding basis $88.67

4 unchanged quarters are collapsed by default.

Portfolio importance

How important is Costar Group Inc in Akre Capital Management’s reported portfolio?

Relative importance is measured only within the verified primary non-option reported portfolio for each quarter.

Current portfolio weight6.5%Q2 2026
Current rank#8of 19 reported positions
Peak portfolio weight7.8%Q3 2025
Best historical rank#5Q4 2020
At peak importanceQ3 2025
CSGP
7.8%
Largest holding
17.9%
Cross-investor discovery

Who else owns Costar Group Inc?

Also reported by 1 other tracked investor in their latest verified filings.

Joel GreenblattGotham Asset Management
CSGP0.0% of reported portfolio
Explore Costar Group Inc across all tracked investors →
SEC evidence & methodology

SEC filing evidence

Market context and filing-derived values are kept separate from actual transaction prices, which 13F filings do not disclose.

Latest verified stock price$29.092026-09-18

Market context only; not an investor transaction price.

Latest filing quarter-end price$28.32Q2 2026

Derived from validated reported value and shares where supported.

Estimated holding basis$78.12Historical reference — not actual purchase price

Calculated from supported filing history.

Latest verified investor filingQ2 2026 · filed 2026-08-14
Open SEC filing ↗

This tracker follows Akre Capital Management, LLC’s Form 13F disclosures. It is not Chuck Akre’s personal brokerage account, and 13F filings do not reveal exact trade dates or execution prices.