CSGP Institutional Ownership
Who owns Costar Group, Inc. and what the big funds did with it last quarter, from every SEC 13F filing. 761 funds reported holding CSGP at Jun 30, 2026, together owning 102.9% of the company.
- ●409 buying vs 409 selling
- ▼Held by funds -0.5 pts
- ▼Funds holding -39
- ▲Superinvestors: 3 added, 2 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 761 | 800 | −4.9% |
| In funds' top 10 | 5 | 7 | −28.6% |
| 13F shares | 414M | 416M | −0.5% |
| Held by funds | 102.9% | 103.4% | −0.5 pts |
| New positions | 106 | 115 | −7.8% |
| Increased | 303 | 306 | −1.0% |
| Reduced | 267 | 277 | −3.6% |
| Sold out | 142 | 167 | −15.0% |
| Calls (shares) | 879K | 1.2M | −27.1% |
| Puts (shares) | 425K | 559K | −23.9% |
| Put/call ratio | 0.47 | 0.36 | +29.4% |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in CSGP
All superinvestors →
Who owns CSGP
share of fund held shares- Index and passive funds36.9%
- Active managers and hedge funds46.9%
- Banks and brokers12.8%
- Pensions, insurers and other3.4%
The top 10 holders own 48.5% of all CSGP shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
233 funds changed their position- Principal Financial Group IncTrimmed−3.2M sh
- Sumitomo Mitsui Trust Group, Inc.Trimmed−845K sh
- Douglas Lane & Associates, LLCAdded+811K sh
- Chicago Capital, LLCTrimmed−492K sh
- Assetmark, IncAdded+480K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | Vanguard Portfolio Management LLC | 9.42% | 37.9M | $1.1B | −319K |
| 2 | BlackRock, Inc. | 8.40% | 33.8M | $958M | +5,785 |
| 3 | Vanguard Capital Management LLC | 6.63% | 26.7M | $756M | −740K |
| 4 | Bamco Inc /ny/ | 5.38% | 21.6M | $612M | +5.3M |
| 5 | State Street Corp | 4.58% | 18.4M | $521M | −240K |
| 6 | Capital International Investors | 4.14% | 16.6M | $471M | +1.1M |
| 7 | Baillie Gifford & Co | 3.27% | 13.2M | $373M | −457K |
| 8 | Geode Capital Management, LLC | 3.02% | 12.2M | $343M | −282K |
| 9 | Akre Capital Management LLC | 2.91% | 11.7M | $331M | +1.4M |
| 10 | Polen Capital Management LLC | 2.18% | 8.8M | $248M | −3.8M |
- AQR Capital Management LLC+7.2M sh+$203M
- EdgePoint Investment Group Inc.+6M sh+$169M
- Norges Bank+5.9M sh+$169M
- Bamco Inc /ny/+5.3M sh+$150M
- Qube Research & Technologies Ltd+3.2M sh+$91.1M
- Jpmorgan Chase & Co+3.1M sh+$90.9M
- Federated Hermes, Inc.+3.1M sh+$88.6M
- Meritage Group LP+2.1M sh+$58.5M
- Principal Financial Group Inc−13.9M sh−$394M
- Invesco Ltd.−9.1M sh−$259M
- D. E. Shaw & Co., Inc.−4.9M sh−$138M
- Goldman Sachs Group Inc−4.1M sh−$117M
- Polen Capital Management LLC−3.8M sh−$108M
- Tiger Global Management LLC−1.5M sh−$60.5M
- Greenhouse Funds LLLP−1.4M sh−$55.6M
- Capitolis Liquid Global Markets LLC−1.4M sh−$54.7M
CSGP institutional ownership FAQ
Who owns the most CSGP stock?
In Q2 2026 13F filings the largest holder of CSGP was Vanguard Portfolio Management LLC, followed by BlackRock, Inc. and Vanguard Capital Management LLC. Index fund managers are usually the biggest holders of large companies.
What percentage of CSGP is owned by institutions?
Funds that file 13F reports held 102.9% of CSGP's shares at Jun 30, 2026, compared with 103.4% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying CSGP?
In Q2 2026, 409 funds bought CSGP (106 of them new positions) and 409 sold (142 sold out completely). Among well known investors, 3 added and 2 cut. Our fund sentiment for CSGP is neutral.
What is CSGP's institutional put/call ratio?
Funds reported $12.6M of CSGP puts against $26.7M of calls, a put/call ratio of 0.47 (0.36 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this CSGP ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.