SK Telecom Co., Ltd. - 存託憑證(普通股)
US ˙ NYSE ˙ US78440P3064

SecuritySKM / SK Telecom Co., Ltd. - Depositary Receipt (Common Stock)
InstitutionUBS Group AG
Latest Disclosed Ownership158,549 shares
Latest Disclosed Value $ 4,643,900
UBS Group AG ownership in SKM / SK Telecom Co., Ltd. - Depositary Receipt (Common Stock)

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 158,549 shares of SK Telecom Co., Ltd. - Depositary Receipt (Common Stock) (US:SKM) valued at $4,643,900 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 426,729 shares of SK Telecom Co., Ltd. - Depositary Receipt (Common Stock). This represents a change in shares of -62.85% during the quarter. The current value of the position is $5,936,075 USD.

UBS Group AG has a history of taking positions in derivatives of the underlying security (SKM) 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.

SKM / SK Telecom Co., Ltd. - Depositary Receipt (Common Stock) 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)
2026-05-05 2026-03-31 13F SK TELECOM SPONSORED ADR 78440P306 158,549 -268,180 -62.85 4,644 -47.00 0.0001
2026-01-29 2025-12-31 13F SK TELECOM SPONSORED ADR 78440P306 426,729 291,418 215.37 8,761 199.79 0.0014
2025-11-13 2025-09-30 13F SK TELECOM SPONSORED ADR 78440P306 135,311 46,129 51.72 2,923 40.35 0.0005
2025-08-14 2025-06-30 13F SK TELECOM SPONSORED ADR 78440P306 89,182 -69,420 -43.77 2,082 -38.24 0.0004
2025-05-13 2025-03-31 13F SK TELECOM SPONSORED ADR 78440P306 158,602 121,564 328.21 3,372 332.73 0.0006
2025-02-14 2024-12-31 13F SK TELECOM SPONSORED ADR 78440P306 37,038 34,502 1,360.49 779 1,198.33 0.0001
2024-11-14 2024-09-30 13F SK TELECOM SPONSORED ADR 78440P306 2,536 -187 -6.87 60 7.14 0.0000
2024-08-14 2024-06-30 13F SK TELECOM SPONSORED ADR 78440P306 2,723 149 5.79 57 1.82 0.0000
2024-05-13 2024-03-31 13F SK TELECOM SPONSORED ADR 78440P306 2,574 1,958 317.86 55 323.08 0.0000
2024-02-09 2023-12-31 13F SK TELECOM SPONSORED ADR 78440P306 616 -590 -48.92 13 -48.00 0.0000
2023-11-09 2023-09-30 13F SK TELECOM SPONSORED ADR 78440P306 1,206 224 22.81 26 31.58 0.0000
2023-08-11 2023-06-30 13F SK TELECOM SPONSORED ADR 78440P306 982 -1,123 -53.35 19 -55.81 0.0000
2023-05-12 2023-03-31 13F SK TELECOM SPONSORED ADR 78440P306 2,105 -3,029 -59.00 43 -59.05 0.0000
2023-02-08 2022-12-31 13F SK TELECOM SPONSORED ADR 78440P306 5,134 -1,316 -20.40 106 -16.00 0.0000
2022-11-10 2022-09-30 13F SK TELECOM SPONSORED ADR 78440P306 6,450 2,683 71.22 125 48.81 0.0001
2022-08-10 2022-06-30 13F SK TELECOM SPONSORED ADR 78440P306 3,767 -4,219 -52.83 84 -59.02 0.0000
2022-05-16 2022-03-31 13F SK TELECOM SPONSORED ADR 78440P306 7,986 -2,960 -27.04 205 -29.55 0.0001
2022-02-14 2021-12-31 13F SK TELECOM SPONSORED ADR 78440P306 10,946 -4,273 -28.08 291 -36.46 0.0001
2021-11-15 2021-09-30 13F SK TELECOM SPONSORED ADR 78440P108 15,219 -4,778 -23.89 458 -27.07 0.0001
2021-08-13 2021-06-30 13F SK TELECOM SPONSORED ADR 78440P108 19,997 307 1.56 628 17.16 0.0002
2021-05-12 2021-03-31 13F SK TELECOM SPONSORED ADR 78440P108 19,690 -6,857 -25.83 536 -17.54 0.0002
2021-02-11 2020-12-31 13F SK TELECOM SPONSORED ADR 78440P108 26,547 -45,086 -62.94 650 -59.53 0.0002
2020-11-12 2020-09-30 13F SK TELECOM SPONSORED ADR 78440P108 71,633 21,519 42.94 1,606 65.74 0.0006
2020-07-31 2020-06-30 13F SK TELECOM SPONSORED ADR 78440P108 50,114 -109,971 -68.70 969 -62.80 0.0004
2020-05-01 2020-03-31 13F SK TELECOM SPONSORED ADR 78440P108 160,085 139,974 696.01 2,605 460.22 0.0012
2020-02-14 2019-12-31 13F SK TELECOM SPONSORED ADR 78440P108 20,111 -501,899 -96.15 465 -95.99 0.0002
2019-11-14 2019-09-30 13F SK TELECOM SPONSORED ADR 78440P108 522,010 205,150 64.74 11,589 47.78 0.0045
2019-08-14 2019-06-30 13F SK TELECOM SPONSORED ADR 78440P108 316,860 -48,482 -13.27 7,842 -12.35 0.0030
2019-05-14 2019-03-31 13F SK TELECOM SPONSORED ADR 78440P108 365,342 69,394 23.45 8,947 12.80 0.0037
2019-02-14 2018-12-31 13F SK TELECOM SPONSORED ADR 78440P108 295,948 -11,750 -3.82 7,932 -7.54 0.0036
2018-11-14 2018-09-30 13F SK TELECOM SPONSORED ADR 78440P108 307,698 -77 -0.03 8,579 19.53 0.0034
2018-08-14 2018-06-30 13F SK TELECOM SPONSORED ADR 78440P108 307,775 -17,749 -5.45 7,177 -8.78 0.0031
2018-05-15 2018-03-31 13F SK TELECOM SPONSORED ADR 78440P108 325,524 16,556 5.36 7,868 -8.77 0.0034
2018-02-14 2017-12-31 13F SK TELECOM SPONSORED ADR 78440P108 308,968 -4,216 -1.35 8,624 11.99 0.0035
2017-11-14 2017-09-30 13F SK TELECOM SPONSORED ADR 78440P108 313,184 -36,699 -10.49 7,701 -14.26 0.0036
2017-11-14 2017-06-30 13F/A-1 SK TELECOM SPONSORED ADR 78440P108 349,883 22,068 6.73 8,982 8.81 0.0046
2017-08-14 2017-06-30 13F SK TELECOM SPONSORED ADR 78440P108 349,883 22,068 8,982
2017-11-14 2017-03-31 13F/A-1 SK TELECOM SPONSORED ADR 78440P108 327,815 -90,001 -21.54 8,255 -5.46 0.0045
2017-05-12 2017-03-31 13F SK TELECOM SPONSORED ADR 78440P108 327,815 -90,001 8,255
2017-02-14 2016-12-31 13F SK TELECOM SPONSORED ADR 78440P108 417,816 -4,996 -1.18 8,732 -8.61 0.0048
2016-11-14 2016-09-30 13F SK TELECOM SPONSORED ADR 78440P108 422,812 28,287 7.17 9,555 15.78 0.0057
2016-08-12 2016-06-30 13F SK TELECOM SPONSORED ADR 78440P108 394,525 -226,184 -36.44 8,253 -34.08 0.0052
2016-05-12 2016-03-31 13F SK TELECOM SPONSORED ADR 78440P108 620,709 -12,056 -1.91 12,520 -1.80 0.0084
2016-02-16 2015-12-31 13F SK TELECOM SPONSORED ADR 78440P108 632,765 -5,940 -0.93 12,750 -18.19 0.0083
2015-11-13 2015-09-30 13F SK TELECOM SPONSORED ADR 78440P108 638,705 -23,219 -3.51 15,584 -5.03 0.0110
2015-08-14 2015-06-30 13F SK TELECOM SPONSORED ADR 78440P108 661,924 -25,769 -3.75 16,409 -12.31 0.0109
2015-05-14 2015-03-31 13F SK TELECOM SPONSORED ADR 78440P108 687,693 -473,229 -40.76 18,713 -40.32 0.0129
2015-02-17 2014-12-31 13F SK TELECOM SPONSORED ADR 78440P108 1,160,922 1,160,922 31,357 0.0219
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
(%)
2018-05-15 2018-03-31 13F SK TELECOM SPONSORED ADR Call 0 -100.00 0 -100.00 n/a n/a n/a
2018-02-14 2017-12-31 13F SK TELECOM SPONSORED ADR Call 73,100 2,040 n/a n/a n/a
2017-11-14 2017-06-30 13F/A SK TELECOM SPONSORED ADR Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-11-14 2017-03-31 13F/A SK TELECOM SPONSORED ADR Call 74,500 1,876 n/a n/a n/a
2017-05-12 2017-03-31 13F SK TELECOM SPONSORED ADR Call 74,500 1,876 n/a n/a n/a
2017-02-14 2016-12-31 13F SK TELECOM SPONSORED ADR Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-11-14 2016-09-30 13F SK TELECOM SPONSORED ADR Call 35,000 791 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.