MGM Resorts International
US ˙ NYSE ˙ US5529531015

SecurityMGM / MGM Resorts International
InstitutionParallel Advisors, LLC
Latest Disclosed Ownership8,867 shares
Latest Disclosed Value $ 323,590
Parallel Advisors, LLC ownership in MGM / MGM Resorts International

On February 11, 2026 - Parallel Advisors, LLC filed a 13F-HR form disclosing ownership of 8,867 shares of MGM Resorts International (US:MGM) valued at $323,557 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 6,681 shares of MGM Resorts International. This represents a change in shares of 32.72% during the quarter. The current value of the position is $428,276 USD.

Parallel Advisors, LLC has a history of taking positions in derivatives of the underlying security (MGM) in the form of stock options. The firm currently holds call 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.

MGM / MGM Resorts International 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)
2026-02-11 2025-12-31 13F MGM RESORTS INTERNATIONAL Stock 552953101 8,867 2,186 32.72 324 39.83 0.0059
2025-11-13 2025-09-30 13F MGM RESORTS INTERNATIONAL Stock 552953101 6,681 -67 -0.99 232 -0.43 0.0042
2025-07-08 2025-06-30 13F MGM RESORTS INTERNATIONAL Stock 552953101 6,748 482 7.69 232 25.41 0.0046
2025-04-08 2025-03-31 13F MGM RESORTS INTERNATIONAL Stock 552953101 6,266 128 2.09 186 -12.74 0.0042
2025-02-10 2024-12-31 13F MGM RESORTS INTERNATIONAL Stock 552953101 6,138 -1,127 -15.51 213 -25.35 0.0048
2024-11-13 2024-09-30 13F MGM RESORTS INTERNATIONAL Stock 552953101 7,265 -125 -1.69 284 -13.41 0.0067
2024-08-08 2024-06-30 13F MGM RESORTS INTERNATIONAL Stock 552953101 7,390 -460 -5.86 328 -11.35 0.0084
2024-05-06 2024-03-31 13F MGM RESORTS INTERNATIONAL Stock 552953101 7,850 1,075 15.87 371 22.52 0.0100
2024-02-12 2023-12-31 13F MGM RESORTS INTERNATIONAL Stock 552953101 6,775 -1,947 -22.32 303 -5.62 0.0090
2024-05-20 2023-09-30 13F/A-1 MGM RESORTS INTERNATIONAL Stock 552953101 8,722 -75 -0.85 321 -17.10 0.0107
2023-11-14 2023-09-30 13F MGM RESORTS INTERNATIONAL Stock 552953101 8,722 -75 321 0.0107
2024-05-20 2023-06-30 13F/A-1 MGM RESORTS INTERNATIONAL Stock 552953101 8,797 89 1.02 386 0.00 0.0124
2023-08-04 2023-06-30 13F MGM RESORTS INTERNATIONAL Stock 552953101 8,797 89 386 0.0124
2024-05-20 2023-03-31 13F/A-1 MGM RESORTS INTERNATIONAL Stock 552953101 8,708 -760 -8.03 387 21.77 0.0130
2023-04-25 2023-03-31 13F MGM RESORTS INTERNATIONAL Stock 552953101 8,708 -760 387 0.0130
2023-02-06 2022-12-31 13F MGM RESORTS INTERNATIONAL Stock 552953101 9,468 -99 -1.03 317 11.62 0.0138
2022-11-10 2022-09-30 13F MGM RESORTS INTERNATIONAL Stock 552953101 9,567 1,009 11.79 284 14.52 0.0131
2022-08-01 2022-06-30 13F MGM RESORTS INTERNATIONAL Stock 552953101 8,558 3,502 69.26 248 13.76 0.0114
2022-04-28 2022-03-31 13F MGM RESORTS INTERNATIONAL Stock 552953101 5,056 -552 -9.84 218 -13.49 0.0087
2022-01-20 2021-12-31 13F MGM RESORTS INTERNATIONAL Stock 552953101 5,608 16 0.29 252 4.56 0.0094
2021-11-02 2021-09-30 13F/A-1 MGM RESORTS INTERNATIONAL Stock 552953101 5,592 419 8.10 241 9.05 0.0097
2021-08-06 2021-06-30 13F MGM RESORTS INTERNATIONAL Stock 552953101 5,173 540 11.66 221 25.57 0.0094
2021-04-23 2021-03-31 13F MGM RESORTS INTERNATIONAL Stock 552953101 4,633 267 6.12 176 27.54 0.0083
2021-02-02 2020-12-31 13F MGM RESORTS INTERNATIONAL Stock 552953101 4,366 -959 -18.01 138 18.97 0.0075
2020-10-27 2020-09-30 13F MGM RESORTS INTERNATIONAL Stock 552953101 5,325 48 0.91 116 31.82 0.0072
2020-07-16 2020-06-30 13F MGM RESORTS INTERNATIONAL Stock 552953101 5,277 1,701 47.57 88 109.52 0.0057
2020-04-27 2020-03-31 13F MGM RESORTS INTERNATIONAL Stock 552953101 3,576 2,923 447.63 42 90.91 0.0034
2020-01-30 2019-12-31 13F MGM RESORTS INTERNATIONAL Stock 552953101 653 140 27.29 22 57.14 0.0017
2019-11-01 2019-09-30 13F MGM RESORTS INTERNATIONAL Stock 552953101 513 67 15.02 14 7.69 0.0012
2019-08-05 2019-06-30 13F MGM RESORTS INTERNATIONAL Stock 552953101 446 0 0.00 13 18.18 0.0013
2019-05-01 2019-03-31 13F MGM RESORTS INTERNATIONAL Stock 552953101 446 0 0.00 11 10.00 0.0012
2019-02-05 2018-12-31 13F MGM RESORTS INTERNATIONAL Stock 552953101 446 28 6.70 10 -16.67 0.0014
2018-11-01 2018-09-30 13F MGM RESORTS INTERNATIONAL Stock 552953101 418 69 19.77 12 20.00 0.0015
2018-07-30 2018-06-30 13F MGM RESORTS INTERNATIONAL Stock 552953101 349 -149 -29.92 10 -41.18 0.0014
2018-05-08 2018-03-31 13F MGM RESORTS INTERNATIONAL Stock 552953101 498 61 13.96 17 13.33 0.0027
2018-02-13 2017-12-31 13F MGM RESORTS INTERNATIONAL COM Stock 552953101 437 22 5.30 15 7.14 0.0025
2017-11-15 2017-09-30 13F/A-1 MGM RESORTS INTERNATIONAL COM Stock 552953101 415 177 74.37 14 75.00 0.0024
2017-08-07 2017-06-30 13F MGM RESORTS INTERNATIONAL COM Stock 552953101 238 154 183.33 8 166.67 0.0015
2017-05-12 2017-03-31 13F/A-1 MGM RESORTS INTERNATIONAL COM Stock 552953101 84 -154 -64.71 3 -57.14 0.0006
2017-05-12 2017-03-31 13F MGM RESORTS INTERNATIONAL COM Stock 552953101 84 3
2017-02-14 2016-12-31 13F MGM RESORTS INTERNATIONAL COM Stock 552953101 238 238 7 0.0016
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
(%)
2022-01-19 2021-12-31 13F MGM RESORTS INTERNATIONAL Stock Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-10-22 2021-09-30 13F MGM RESORTS INTERNATIONAL Stock Call 5,173 221 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.