CoStar Group, Inc.
MX ˙ BMV ˙ US22160N1090
DIESES SYMBOL IST NICHT MEHR AKTIV
SecurityMX:CSGP / CoStar Group, Inc.
InstitutionJpmorgan Chase & Co
Latest Disclosed Ownership1,849,545 shares
Latest Disclosed Value $ 75,609,417
Jpmorgan Chase & Co ownership in CSGP / CoStar Group, Inc.

On May 13, 2026 - Jpmorgan Chase & Co filed a 13F-HR/A form disclosing ownership of 1,849,545 shares of CoStar Group, Inc. (MX:CSGP) valued at $75,609,417 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 772,040 shares of CoStar Group, Inc.. This represents a change in shares of 139.57% during the quarter.

Jpmorgan Chase & Co has a history of taking positions in derivatives of the underlying security (CSGP) in the form of stock options. The firm currently holds call options representing 8,300 of underlying shares valued at $339,304 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:CSGP / CoStar Group, Inc. Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F/A-1 COSTAR GROUP COMMON 22160N109 1,849,545 1,077,505 139.57 75,609 45.65 0.0005
2026-05-13 2026-03-31 13F COSTAR GROUP COMMON 22160N109 0 -100.00 0
2026-02-11 2025-12-31 13F COSTAR GROUP COMMON 22160N109 772,040 -1,144,825 -59.72 51,912 -67.90 0.0033
2025-11-26 2025-09-30 13F/A-1 COSTAR GROUP COMMON 22160N109 1,916,865 -373,986 -16.33 161,734 -12.19 0.0097
2025-11-07 2025-09-30 13F COSTAR GROUP COMMON 22160N109 1,916,865 -373,986 161,734 0.0010
2025-08-12 2025-06-30 13F COSTAR GROUP COMMON 22160N109 2,290,851 -195,011 -7.84 184,192 -6.48 0.0120
2025-05-12 2025-03-31 13F COSTAR GROUP COMMON 22160N109 2,485,862 1,332,813 115.59 196,955 138.60 0.0144
2025-02-12 2024-12-31 13F COSTAR GROUP COMMON 22160N109 1,153,049 -1,205,282 -51.11 82,547 -53.60 0.0061
2024-12-26 2024-09-30 13F/A-1 COSTAR GROUP COMMON 22160N109 2,358,331 1,001,177 73.77 177,913 76.82 0.0135
2024-11-08 2024-09-30 13F COSTAR GROUP COMMON 22160N109 2,358,331 1,001,177 177,913 0.0136
2024-12-26 2024-06-30 13F/A-1 COSTAR GROUP COMMON 22160N109 1,357,154 -603,687 -30.79 100,619 -46.88 0.0083
2024-08-12 2024-06-30 13F COSTAR GROUP COMMON 22160N109 1,357,154 -603,687 100,619 0.0083
2024-12-26 2024-03-31 13F/A-1 COSTAR GROUP COMMON 22160N109 1,960,841 1,320,895 206.41 189,417 238.70 0.0160
2024-05-10 2024-03-31 13F COSTAR GROUP COMMON 22160N109 1,960,841 1,320,895 189,417 0.0160
2024-12-26 2023-12-31 13F/A-1 COSTAR GROUP COMMON 22160N109 639,946 -292,607 -31.38 55,925 -22.01 0.0054
2024-02-12 2023-12-31 13F COSTAR GROUP COMMON 22160N109 639,946 -292,607 55,925 0.0054
2023-11-14 2023-09-30 13F COSTAR GROUP COMMON 22160N109 932,553 243,694 35.38 71,704 16.96 0.0079
2023-08-11 2023-06-30 13F COSTAR GROUP COMMON 22160N109 688,859 -191,680 -21.77 61,308 1.12 0.0067
2023-05-18 2023-03-31 13F/A-1 COSTAR GROUP COMMON 22160N109 880,539 380,273 76.01 60,627 159,444.74 0.0074
2023-05-11 2023-03-31 13F COSTAR GROUP COMMON 22160N109 689,150 188,884 60,626 0.0009
2023-02-13 2022-12-31 13F COSTAR GROUP COMMON 22160N109 500,266 -6,952 -1.37 39 -99.89 0.0051
2022-11-14 2022-09-30 13F COSTAR GROUP COMMON 22160N109 507,218 197,928 63.99 35,326 89.07 0.0051
2022-08-11 2022-06-30 13F COSTAR GROUP COMMON 22160N109 309,290 207,305 203.27 18,684 175.05 0.0026
2022-05-11 2022-03-31 13F COSTAR GROUP COMMON 22160N109 101,985 -14,212 -12.23 6,793 -26.03 0.0008
2022-02-11 2021-12-31 13F/A-1 COSTAR GROUP COMMON 22160N109 116,197 -26,885 -18.79 9,183 -25.43 0.0011
2022-02-10 2021-12-31 13F COSTAR GROUP COMMON 22160N109 116,197 -26,885 9,183 0.0011
2021-11-12 2021-09-30 13F COSTAR GROUP COMMON 22160N109 143,082 -1,166,118 -89.07 12,314 -88.64 0.0015
2021-08-12 2021-06-30 13F COSTAR GROUP COMMON 22160N109 1,309,200 1,181,166 922.54 108,427 3.04 0.0129
2021-05-12 2021-03-31 13F COSTAR GROUP COMMON 22160N109 128,034 -252,347 -66.34 105,229 -70.07 0.0140
2021-02-19 2020-12-31 13F/A-1 COSTAR GROUP COMMON 22160N109 380,381 -106,421 -21.86 351,580 -15.71 0.0517
2021-02-11 2020-12-31 13F COSTAR GROUP COMMON 22160N109 380,381 -106,421 351,580 8,694.8239
2020-11-12 2020-09-30 13F/A-1 COSTAR GROUP COMMON 22160N109 486,802 -13,275 -2.65 417,115 17.37 0.0701
2020-11-12 2020-09-30 13F COSTAR GROUP COMMON 22160N109 486,802 417,115
2020-08-11 2020-06-30 13F COSTAR GROUP COMMON 22160N109 500,077 -29,547 -5.58 355,391 14.27 0.0686
2020-05-12 2020-03-31 13F COSTAR GROUP COMMON 22160N109 529,624 -104,616 -16.49 311,000 -18.04 0.0730
2020-02-11 2019-12-31 13F COSTAR GROUP COMMON 22160N109 634,240 -280,995 -30.70 379,468 -30.11 0.0708
2019-11-12 2019-09-30 13F COSTAR GROUP COMMON 22160N109 915,235 86,788 10.48 542,919 20.71 0.1081
2019-08-07 2019-06-30 13F COSTAR GROUP COMMON 22160N109 828,447 246,705 42.41 449,788 65.77 0.0879
2019-05-07 2019-03-31 13F COSTAR GROUP COMMON 22160N109 581,742 22,555 4.03 271,335 43.84 0.0554
2019-02-11 2018-12-31 13F COSTAR GROUP COMMON 22160N109 559,187 80,890 16.91 188,636 -6.29 0.0436
2018-11-13 2018-09-30 13F/A-1 COSTAR GROUP COMMON 22160N109 478,297 202,743 73.58 201,288 77.03 0.0385
2018-11-07 2018-09-30 13F COSTAR GROUP COMMON 22160N109 478,297 202,743 201,288
2018-08-14 2018-06-30 13F COSTAR GROUP COMMON 22160N109 275,554 264,484 2,389.20 113,702 2,731.93 0.0234
2018-05-10 2018-03-31 13F COSTAR GROUP COMMON 22160N109 11,070 23 0.21 4,015 22.33 0.0009
2018-02-13 2017-12-31 13F COSTAR GROUP COMMON 22160N109 11,047 -688,726 -98.42 3,282 -98.24 0.0007
2017-11-09 2017-09-30 13F COSTAR GROUP COMMON 22160N109 699,773 637,278 1,019.73 186,210 1,030.33 0.0411
2017-08-09 2017-06-30 13F COSTAR GROUP COMMON 22160N109 62,495 -209,952 -77.06 16,474 -70.82 0.0038
2017-05-10 2017-03-31 13F COSTAR GROUP COMMON 22160N109 272,447 -396,596 -59.28 56,456 -55.23 0.0129
2017-02-06 2016-12-31 13F COSTAR GROUP COMMON 22160N109 669,043 -150,228 -18.34 126,107 -28.91 0.0303
2016-11-04 2016-09-30 13F COSTAR GROUP COMMON 22160N109 819,271 -5,496 -0.67 177,397 -1.63 0.0437
2016-08-08 2016-06-30 13F COSTAR GROUP COMMON 22160N109 824,767 -80,572 -8.90 180,344 5.86 0.0450
2016-05-10 2016-03-31 13F COSTAR GROUP COMMON 22160N109 905,339 -101,200 -10.05 170,357 -18.11 0.0436
2016-02-12 2015-12-31 13F COSTAR GROUP COMMON 22160N109 1,006,539 -119,230 -10.59 208,042 6.78 0.0522
2015-11-13 2015-09-30 13F COSTAR GROUP COMMON 22160N109 1,125,769 -55,777 -4.72 194,825 -18.07 0.0521
2015-08-14 2015-06-30 13F COSTAR GROUP COMMON 22160N109 1,181,546 72,974 6.58 237,798 8.43 0.0561
2015-05-15 2015-03-31 13F COSTAR GROUP COMMON 22160N109 1,108,572 25,840 2.39 219,309 10.30 0.0499
2015-02-13 2014-12-31 13F COSTAR GROUP COMMON 22160N109 1,082,732 -1,319 -0.12 198,822 17.92 0.0455
2014-12-08 2014-09-30 13F/A-1 COSTAR GROUP COMMON 22160N109 1,084,051 431,818 66.21 168,614 63.44 0.0400
2014-11-14 2014-09-30 13F COSTAR GROUP COMMON 22160N109 1,084,051 168,614
2014-09-03 2014-06-30 13F/A-1 COSTAR GROUP COMMON 22160N109 652,233 395,184 153.74 103,164 114.92 0.0262
2014-08-14 2014-06-30 13F COSTAR GROUP COMMON 22160N109 652,233 103,164
2014-05-15 2014-03-31 13F COSTAR GROUP COMMON 22160N109 257,049 59,729 30.27 48,001 31.79 0.0132
2014-02-26 2013-12-31 13F/A-1 COSTAR GROUP COMMON 22160N109 197,320 28,742 17.05 36,422 28.67 0.0103
2014-02-13 2013-12-31 13F COSTAR GROUP COMMON 22160N109 197,320 36,422
2013-10-31 2013-09-30 13F COSTAR GROUP COMMON 22160N109 168,578 20,422 13.78 28,306 48.03 0.0084
2013-08-13 2013-06-30 13F COSTAR GROUP COMMON 22160N109 148,156 148,156 19,122 0.0061
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-13 2026-03-31 13F/A COSTAR GROUP OPTION Call 8,300 339 n/a n/a n/a
2025-08-12 2025-06-30 13F COSTAR GROUP OPTION Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-05-12 2025-03-31 13F COSTAR GROUP OPTION Call 50,100 51.36 3,969 67.54 n/a n/a n/a
2025-02-12 2024-12-31 13F COSTAR GROUP OPTION Call 33,100 2,370 n/a n/a n/a
2024-08-12 2024-06-30 13F COSTAR GROUP OPTION Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-12-26 2024-03-31 13F/A COSTAR GROUP OPTION Call 11,200 -69.81 1,082 -66.66 n/a n/a n/a
2024-05-10 2024-03-31 13F COSTAR GROUP OPTION Call 11,200 1,082 n/a n/a n/a
2024-12-26 2023-12-31 13F/A COSTAR GROUP OPTION Call 37,100 3,242 n/a n/a n/a
2024-02-12 2023-12-31 13F COSTAR GROUP OPTION Call 37,100 3,242 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-08-12 2025-06-30 13F COSTAR GROUP OPTION Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-05-12 2025-03-31 13F COSTAR GROUP OPTION Put 9,500 53.23 753 69.75 n/a n/a n/a
2025-02-12 2024-12-31 13F COSTAR GROUP OPTION Put 6,200 444 n/a n/a n/a
2022-08-11 2022-06-30 13F COSTAR GROUP OPTION Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-05-11 2022-03-31 13F COSTAR GROUP OPTION Put 16,400 1,092 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.