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Of the 18 tracked institutions holding CSGP, 11 have a 3-year clone track record — 8 of them beat the S&P. Average holder's clone alpha: -0.2pt. It's a gauge of who owns the name, not just how many.
Among the 18 tracked institutional investors we monitor, CSGP (COSTAR GROUP INC) is held with a combined value of $8.36B across 160,572,075 shares. The largest holder is VANGUARD GROUP INC with a position worth $4.71B (0.07% of their portfolio). Magnetar Financial LLC opened a new position in the most recent quarter. 10 funds increased their holdings. 7 funds reduced their position.
Total Institutional Value
$8.36B
Total Shares Held
160,572,075
Institutional Holders
18
% of Shares Outstanding
39.3%
of 408.36M shares · SEC 2026-04-27
Days to Cover
2.5+6.9%
16.32M shares short · FINRA 2026-07-15
Tracked 13F institutions hold 39.3% of CSGP's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2026-04-27), not a live float.
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $4.71B | 0.07% | +0.1% |
| 2 | BlackRock, Inc. | $1.36B | 0.02% | -0.5% |
| 3 | STATE STREET CORP | $752.38M | 0.03% | +0.1% |
| 4 | BAILLIE GIFFORD & CO | $549.06M | 0.56% | +5.2% |
| 5 | AKRE CAPITAL MANAGEMENT LLC | $417.45M | 6.80% | +7.6% |
| 6 | Capital Research Global Investors | $176.44M | 0.03% | -21.4% |
| 7 | FMR LLC | $114.22M | 0.01% | +135.5% |
| 8 | PRICE T ROWE ASSOCIATES INC /MD/ | $61.23M | 0.01% | +26.6% |
| 9 | TIGER GLOBAL MANAGEMENT LLC | $60.51M | 0.26% | -33.6% |
| 10 | AQR CAPITAL MANAGEMENT LLC | $50.94M | 0.02% | +241.9% |
| Member | Type | Date |
|---|---|---|
| Gilbert Cisneros | Sell | Apr 14, 2026 |
| Gilbert Cisneros | Buy | Mar 13, 2026 |
| Gilbert Cisneros | Buy | Jan 28, 2026 |
| Gilbert Cisneros | Buy |
As of the latest SEC 13F filings, VANGUARD GROUP INC is the largest institutional holder of CSGP with a position worth $4.71B, representing 0.07% of their portfolio. In total, 18 institutional investors hold CSGP with a combined value of $8.36B.
In the most recent quarter, 1 fund opened a new position in CSGP. Additionally, 10 increased their holdings and 7 reduced their positions.
Institutional investors hold $8.36B worth of CSGP stock across 18 positions. The largest institutional holder is VANGUARD GROUP INC with $4.71B in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For CSGP, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their CSGP positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
| Dec 10, 2025 |
| Gilbert Cisneros | Buy | Oct 15, 2025 |
| Gilbert Cisneros | Buy | Sep 30, 2025 |
| Lisa McClain | Sell | Sep 25, 2025 |
| Gilbert Cisneros | Buy | Sep 22, 2025 |
Showing 8 of 18. STOCK Act disclosures lag up to 45 days.
Last Close
$27.66
2026-07-24
YTD
-57.9%
1% of 52-week range
