CoStar Group
CSGP
757 hedge funds and large institutions have $11.7B invested in CoStar Group in 2026 Q2 according to their latest regulatory filings, with 113 funds opening new positions, 302 increasing their positions, 266 reducing their positions, and 144 closing their positions.
145% more call options, than puts
Call options by funds: $81.7M | Put options by funds: $33.3M
14% more repeat investments, than reductions
Existing positions increased: 302 | Existing positions reduced: 266
2.26% more ownership
Funds ownership: 99.08% → 101.35% (+2.3%)
5% less funds holding
Funds holding: 797 → 757 (-40)
22% less first-time investments, than exits
New positions opened: 113 | Existing positions closed: 144
29% less funds holding in top 10
Funds holding in top 10: 7 → 5 (-2)
30% less capital invested
Capital invested by funds: $16.8B → $11.7B (-$5.06B)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
AQR Capital Management
Greenwich,
Connecticut
|
+$247M |
| 2 |
EIG
EdgePoint Investment Group
Toronto,
Ontario, Canada
|
+$205M |
| 3 |
BAMCO Inc
New York
|
+$183M |
| 4 |
Qube Research & Technologies (QRT)
London,
United Kingdom
|
+$111M |
| 5 |
Federated Hermes
Pittsburgh,
Pennsylvania
|
+$108M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Principal Financial Group
Des Moines,
Iowa
|
-$478M |
| 2 |
Invesco
Atlanta,
Georgia
|
-$314M |
| 3 |
D.E. Shaw & Co
New York
|
-$167M |
| 4 |
Goldman Sachs
New York
|
-$142M |
| 5 |
Polen Capital Management
Boca Raton,
Florida
|
-$131M |
CSGP Hedge Fund Activity: Q2 2026 in Review
757 of the 8,316 institutional investors tracked by Wall St. Rank reported a position in CoStar Group (CSGP) for Q2 2026, worth a combined $11.7B — down 30% from $16.8B a quarter earlier.
Sellers outnumbered buyers: 144 funds closed out of CSGP and 113 opened new positions — a net loss of 31 holders — while 266 trimmed existing stakes and 302 added.
The largest buyer was AQR Capital Management, adding an estimated $247M. The largest seller was Principal Financial Group, cutting an estimated $478M.
- 757 institutional investors held CoStar Group (CSGP) as of Q2 2026, down from 797 in Q1 2026.
- Funds reported $11.7B of CoStar Group stock for Q2 2026, down 30% quarter-over-quarter.
- 113 funds opened new CoStar Group positions in Q2 2026 and 144 closed out, a net change of -31 holders.
- The largest CoStar Group buyer in Q2 2026 was AQR Capital Management, an estimated $247M added.
- The largest CoStar Group seller in Q2 2026 was Principal Financial Group, an estimated $478M sold.
Based on aggregated 13F filings for Q2 2026.