OCM
CSGP icon

Osterweis Capital Management’s CoStar Group CSGP Stock Holding History

Osterweis Capital Management’s Portfolio CSGP Stock Details CSGP Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		– Sell
-326
Closed -$13.2K – 235
2026
Q1 		$13.2K Buy
+326
New +$17K ﹤0.01% 226
2025
Q4 		– Sell
-1,768
Closed -$149K – 297
2025
Q3 		$149K Sell
1,768
-49
-3% -$4.33K 0.01% 154
2025
Q2 		$146K Buy
+1,817
New +$142K 0.01% 159

Other funds holding CSGP

Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
BAMCO Inc
BAMCO Inc New York $66.6B AUM 7.35% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $110B AUM 4.8% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
ACM
AKRE Capital Management Middleburg, Virginia $5.12B AUM 19.08% 1-Year Est. Return
Polen Capital Management
Polen Capital Management Boca Raton, Florida $11.6B AUM 8.03% 1-Year Est. Return

Osterweis Capital Management's CSGP Position: Q2 2026 in Review

Osterweis Capital Management sold out of CoStar Group (CSGP) in Q2 2026, closing a stake of 326 shares — an estimated $13.2K sold.

Osterweis Capital Management first reported a position in CSGP in Q2 2025 and held it in 3 quarters. The position peaked at $149K in Q3 2025. 757 funds tracked by Wall St. Rank hold CSGP as of Q2 2026.

  • Osterweis Capital Management reported no remaining CoStar Group position as of Q2 2026 after selling out during the quarter.
  • Osterweis Capital Management sold 326 CoStar Group shares in Q2 2026, an estimated $13.2K.
  • Osterweis Capital Management first reported a position in CoStar Group in Q2 2025 and held it in 3 quarters.
  • Osterweis Capital Management's CoStar Group position peaked at $149K in Q3 2025.
  • 757 funds tracked by Wall St. Rank held CoStar Group as of Q2 2026.

Based on Osterweis Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.