MGM Resorts International
US ˙ NYSE ˙ US5529531015

SecurityMGM / MGM Resorts International
InstitutionSei Investments Co
Latest Disclosed Ownership27,309 shares
Latest Disclosed Value $ 996,508
Sei Investments Co reports 11.09% decrease in ownership of MGM / MGM Resorts International

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 27,309 shares of MGM Resorts International (US:MGM) valued at $996,505 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 30,714 shares of MGM Resorts International. This represents a change in shares of -11.09% during the quarter. The current value of the position is $1,319,025 USD.

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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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)
2026-02-13 2025-12-31 13F MGM RESORTS INTERNATIONAL COM 552953101 27,309 -3,405 -11.09 997 -6.39 0.0010
2025-11-13 2025-09-30 13F MGM RESORTS INTERNATIONAL COM 552953101 30,714 3,912 14.60 1,065 15.53 0.0011
2025-08-14 2025-06-30 13F MGM RESORTS INTERNATIONAL COM 552953101 26,802 4,526 20.32 922 39.55 0.0011
2025-05-14 2025-03-31 13F/A-1 MGM RESORTS INTERNATIONAL COM 552953101 22,276 4,356 24.31 660 6.45 0.0008
2025-05-13 2025-03-31 13F MGM RESORTS INTERNATIONAL COM 552953101 17,950 30 595 0.0006
2025-02-11 2024-12-31 13F MGM RESORTS INTERNATIONAL COM 552953101 17,920 -879 -4.68 621 -15.53 0.0008
2024-11-12 2024-09-30 13F MGM RESORTS INTERNATIONAL COM 552953101 18,799 -55 -0.29 735 -12.31 0.0010
2024-08-13 2024-06-30 13F MGM RESORTS INTERNATIONAL COM 552953101 18,854 1,564 9.05 838 2.57 0.0012
2024-05-07 2024-03-31 13F MGM RESORTS INTERNATIONAL COM 552953101 17,290 -168,822 -90.71 816 -90.19 0.0012
2024-02-14 2023-12-31 13F MGM RESORTS INTERNATIONAL COM 552953101 186,112 -36,224 -16.29 8,315 1.76 0.0133
2023-11-14 2023-09-30 13F MGM RESORTS INTERNATIONAL COM 552953101 222,336 -8,741 -3.78 8,172 -19.48 0.0147
2023-08-11 2023-06-30 13F MGM RESORTS INTERNATIONAL COM 552953101 231,077 -23,782 -9.33 10,149 -10.35 0.0177
2023-05-12 2023-03-31 13F MGM RESORTS INTERNATIONAL COM 552953101 254,859 207,544 438.64 11,321 613.75 0.0210
2023-02-10 2022-12-31 13F MGM RESORTS INTERNATIONAL COM 552953101 47,315 -226,292 -82.71 1,587 -80.50 0.0035
2022-11-14 2022-09-30 13F MGM RESORTS INTERNATIONAL COM 552953101 273,607 44,365 19.35 8,132 23.01 0.0181
2022-08-15 2022-06-30 13F MGM RESORTS INTERNATIONAL COM 552953101 229,242 50,505 28.26 6,611 -11.69 0.0143
2022-05-13 2022-03-31 13F MGM RESORTS INTERNATIONAL COM 552953101 178,737 -80,914 -31.16 7,486 -35.72 0.0150
2022-02-14 2021-12-31 13F MGM RESORTS INTERNATIONAL COM 552953101 259,651 48,339 22.88 11,646 27.42 0.0218
2021-11-12 2021-09-30 13F MGM RESORTS INTERNATIONAL COM 552953101 211,312 -621 -0.29 9,140 1.30 0.0192
2021-08-06 2021-06-30 13F MGM RESORTS INTERNATIONAL COM 552953101 211,933 47,586 28.95 9,023 44.51 0.0200
2021-05-12 2021-03-31 13F MGM RESORTS INTERNATIONAL COM 552953101 164,347 130,982 392.57 6,244 494.10 0.0157
2021-02-08 2020-12-31 13F MGM RESORTS INTERNATIONAL COM 552953101 33,365 2,600 8.45 1,051 57.10 0.0027
2020-12-04 2020-09-30 13F/A-1 MGM RESORTS INTERNATIONAL COM 552953101 30,765 -3,215 -9.46 669 17.16 0.0019
2020-11-06 2020-09-30 13F MGM RESORTS INTERNATIONAL COM 552953101 35,656 1,676 775 1,866.0277
2020-08-17 2020-06-30 13F/A-1 MGM RESORTS INTERNATIONAL COM 552953101 33,980 1,091 3.32 571 47.16 0.0018
2020-08-11 2020-06-30 13F MGM RESORTS INTERNATIONAL COM 552953101 70,143 37,254 2,254 6,114.0950
2020-05-14 2020-03-31 13F MGM RESORTS INTERNATIONAL COM 552953101 32,889 -44,422 -57.46 388 -84.90 0.0014
2020-02-06 2019-12-31 13F MGM RESORTS INTERNATIONAL COM 552953101 77,311 -8,158 -9.54 2,569 8.35 0.0077
2019-11-12 2019-09-30 13F MGM RESORTS INTERNATIONAL COM 552953101 85,469 -8,384 -8.93 2,371 -11.53 0.0061
2019-08-14 2019-06-30 13F MGM RESORTS INTERNATIONAL COM 552953101 93,853 -3,686 -3.78 2,680 6.86 0.0088
2019-05-15 2019-03-31 13F MGM RESORTS INTERNATIONAL COM 552953101 97,539 -2,203 -2.21 2,508 -9.56 0.0084
2019-02-13 2018-12-31 13F MGM RESORTS INTERNATIONAL COM 552953101 99,742 1,924 1.97 2,773 1.32 0.0099
2018-11-08 2018-09-30 13F MGM RESORTS INTERNATIONAL COM 552953101 97,818 -277,582 -73.94 2,737 -74.89 0.0099
2018-08-03 2018-06-30 13F MGM RESORTS INTERNATIONAL COM 552953101 375,400 153,825 69.42 10,898 40.44 0.0370
2018-05-11 2018-03-31 13F MGM RESORTS INTERNATIONAL COM 552953101 221,575 -19,067 -7.92 7,760 -3.43 0.0297
2018-02-08 2017-12-31 13F MGM RESORTS INTERNATIONAL COM 552953101 240,642 -69,063 -22.30 8,036 -20.38 0.0279
2017-11-06 2017-09-30 13F MGM RESORTS INTERNATIONAL COM 552953101 309,705 61,167 24.61 10,093 29.78 0.0359
2017-07-31 2017-06-30 13F MGM RESORTS INTERNATIONAL COM 552953101 248,538 192,496 343.49 7,777 406.64 0.0310
2017-05-05 2017-03-31 13F MGM RESORTS INTERNATIONAL COM 552953101 56,042 -54,077 -49.11 1,535 -51.65 0.0067
2017-02-02 2016-12-31 13F MGM RESORTS INTERNATIONAL COM 552953101 110,119 101,174 1,131.07 3,175 1,262.66 0.0154
2016-11-04 2016-09-30 13F MGM RESORTS INTERNATIONAL COM 552953101 8,945 8,635 2,785.48 233 3,228.57 0.0012
2016-08-11 2016-06-30 13F MGM RESORTS INTERNATIONAL COM 552953101 310 72 30.25 7 40.00 0.0000
2016-05-10 2016-03-31 13F/A-1 MGM RESORTS INTERNATIONAL COM 552953101 238 -224 -48.48 5 -50.00 0.0000
2016-02-03 2015-12-31 13F MGM RESORTS INTERNATIONAL COM 552953101 462 37 8.71 10 25.00 0.0001
2015-11-02 2015-09-30 13F/A-1 MGM RESORTS INTERNATIONAL COM 552953101 425 -6 -1.39 8 0.00 0.0001
2015-10-30 2015-09-30 13F MGM RESORTS INTERNATIONAL COM 552953101 425 9
2015-08-07 2015-06-30 13F/A-1 MGM RESORTS INTERNATIONAL COM 552953101 431 -41,407 -98.97 8 -99.09 0.0001
2015-08-04 2015-06-30 13F MGM RESORTS INTERNATIONAL COM 552953101 431 -41,407 8 0.0001
2015-05-14 2015-03-31 13F/A-1 MGM RESORTS INTERNATIONAL COM 552953101 41,838 -177,959 -80.97 879 -81.29 0.0076
2015-05-01 2015-03-31 13F M NOTE 3.000% 3/0 552953101 41,838 879
2015-02-10 2014-12-31 13F MGM RESORTS INTERNATIONAL COM 552953101 219,797 219,797 4,699 0.0415
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.