Under Armour, Inc.
US ˙ NYSE ˙ US9043112062

SecurityUA / Under Armour, Inc.
InstitutionCitadel Advisors Llc
ManagerKen Griffin
Latest Disclosed Ownership422,909 shares
Latest Disclosed Value $ 2,448,643
Citadel Advisors Llc ownership in UA / Under Armour, Inc.

On May 15, 2026 - Citadel Advisors Llc filed a 13F-HR form disclosing ownership of 422,909 shares of Under Armour, Inc. (US:UA) valued at $2,448,643 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 260,014 shares of Under Armour, Inc.. This represents a change in shares of 62.65% during the quarter. The current value of the position is $2,279,480 USD.

Citadel Advisors Llc has a history of taking positions in derivatives of the underlying security (UA) in the form of stock options. The firm currently holds call options representing 56,500 of underlying shares valued at $327,135 USD and put options representing 83,700 of underlying shares valued at $484,623 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.

UA / Under Armour, 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)
2026-05-15 2026-03-31 13F UNDER ARMOUR CL C 904311206 422,909 162,895 62.65 2,449 96.15 0.0003
2026-02-17 2025-12-31 13F UNDER ARMOUR CL C 904311206 260,014 -690,723 -72.65 1,248 -72.82 0.0002
2025-11-14 2025-09-30 13F UNDER ARMOUR CL C 904311206 950,737 -623,763 -39.62 4,592 -55.06 0.0007
2025-08-14 2025-06-30 13F UNDER ARMOUR CL C 904311206 1,574,500 900,417 133.58 10,219 154.81 0.0018
2025-05-15 2025-03-31 13F UNDER ARMOUR CL C 904311206 674,083 674,083 4,011 0.0008
2025-02-14 2024-12-31 13F UNDER ARMOUR CL C 904311206 0 -698,044 -100.00 0 -100.00
2024-11-14 2024-09-30 13F UNDER ARMOUR CL C 904311206 698,044 694,044 17,351.10 5,836 22,342.31 0.0011
2024-08-14 2024-06-30 13F UNDER ARMOUR CL C 904311206 4,000 -537,106 -99.26 26 -99.33 0.0000
2024-05-15 2024-03-31 13F UNDER ARMOUR CL C 904311206 541,106 115,561 27.16 3,863 8.73 0.0007
2024-02-14 2023-12-31 13F UNDER ARMOUR CL C 904311206 425,545 19,076 4.69 3,553 37.02 0.0007
2023-11-14 2023-09-30 13F UNDER ARMOUR CL C 904311206 406,469 -498,901 -55.10 2,593 -57.32 0.0006
2023-08-14 2023-06-30 13F UNDER ARMOUR CL C 904311206 905,370 -1,836,622 -66.98 6,075 -74.03 0.0013
2023-05-15 2023-03-31 13F UNDER ARMOUR CL C 904311206 2,741,992 2,271,897 483.28 23,389 457.81 0.0051
2023-02-14 2022-12-31 13F UNDER ARMOUR CL C 904311206 470,095 -781,777 -62.45 4,193 -43.80 0.0010
2022-11-14 2022-09-30 13F UNDER ARMOUR CL C 904311206 1,251,872 966,629 338.88 7,461 245.10 0.0017
2022-08-15 2022-06-30 13F UNDER ARMOUR CL C 904311206 285,243 -2,858,098 -90.93 2,162 -95.58 0.0006
2022-05-16 2022-03-31 13F UNDER ARMOUR CL C 904311206 3,143,341 3,143,341 4,526.85 48,911 4,006.72 0.0101
2022-02-14 2021-12-31 13F UNDER ARMOUR Cmn 904311206 0 -67,937 -100.00 0 -100.00
2021-11-15 2021-09-30 13F UNDER ARMOUR Cmn 904311206 67,937 -1,917,698 -96.58 1,191 -96.77 0.0002
2021-08-16 2021-06-30 13F UNDER ARMOUR CL C 904311206 1,985,635 1,781,430 872.37 36,874 878.09 0.0083
2021-05-21 2021-03-31 13F/A-1 UNDER ARMOUR CL C 904311206 204,205 39,511 23.99 3,770 53.81 0.0009
2021-05-17 2021-03-31 13F UNDER ARMOUR CL C 904311206 204,205 -3,540,355 3,770 0.0009
2021-02-16 2020-12-31 13F UNDER ARMOUR CL C 904311206 164,694 -411,532 -71.42 2,451 -56.77 0.0006
2020-11-16 2020-09-30 13F UNDER ARMOUR CL C 904311206 576,226 515,535 849.44 5,670 1,059.51 0.0016
2020-05-15 2020-03-31 13F UNDER ARMOUR Cmn 904311206 60,691 -19,166 -24.00 489 -66.23 0.0002
2019-11-14 2019-09-30 13F UNDER ARMOUR Cmn 904311206 79,857 8,304 11.61 1,448 -8.82 0.0007
2019-08-14 2019-06-30 13F UNDER ARMOUR Cmn 904311206 71,553 -268,744 -78.97 1,588 -75.27 0.0007
2019-05-15 2019-03-31 13F UNDER ARMOUR Cmn 904311206 340,297 -201,626 -37.21 6,422 -26.71 0.0032
2019-02-14 2018-12-31 13F UNDER ARMOUR Cmn 904311206 541,923 529,342 4,207.47 8,763 5,116.07 0.0048
2018-02-09 2017-12-31 13F UNDER ARMOUR Cmn 904311206 12,581 -342,182 -96.45 168 -96.85 0.0001
2017-11-09 2017-09-30 13F UNDER ARMOUR Cmn 904311206 354,763 222,685 168.60 5,328 100.08 0.0041
2017-08-11 2017-06-30 13F UNDER ARMOUR Cmn 904311206 132,078 -54,527 -29.22 2,663 -22.02 0.0023
2017-05-12 2017-03-31 13F UNDER ARMOUR Cmn 904311206 186,605 -64,475 -25.68 3,415 -45.97 0.0031
2017-02-10 2016-12-31 13F UNDER ARMOUR Cmn 904311206 251,080 241,362 2,483.66 6,320 1,820.97 0.0064
2017-01-31 2016-09-30 13F/A-1 UNDER ARMOUR Cmn 904311206 9,718 -69,176 -87.68 329 -88.54 0.0003
2016-11-10 2016-09-30 13F UNDER ARMOUR INC-CLASS C Cmn 904311206 9,718 329
2017-01-31 2016-06-30 13F/A-1 UNDER ARMOUR Cmn 904311206 78,894 78,894 2,872 0.0032
2016-08-12 2016-06-30 13F UNDER ARMOUR INC-CLASS C Cmn 904311206 78,894 2,872 0.0032
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
(%)
2026-05-15 2026-03-31 13F UNDER ARMOUR CL C Call 56,500 327 n/a n/a n/a
2026-02-17 2025-12-31 13F UNDER ARMOUR CL C Call 0 -100.00 0 n/a n/a n/a
2025-11-14 2025-09-30 13F UNDER ARMOUR CL C Call 14,800 -67.54 71 -75.93 n/a n/a n/a
2025-08-14 2025-06-30 13F UNDER ARMOUR CL C Call 45,600 41.61 296 54.45 n/a n/a n/a
2025-05-15 2025-03-31 13F UNDER ARMOUR CL C Call 32,200 -88.01 192 -90.46 n/a n/a n/a
2025-02-14 2024-12-31 13F UNDER ARMOUR CL C Call 268,600 8.09 2,004 -3.56 n/a n/a n/a
2024-11-14 2024-09-30 13F UNDER ARMOUR CL C Call 248,500 -1.55 2,077 26.03 n/a n/a n/a
2024-08-14 2024-06-30 13F UNDER ARMOUR CL C Call 252,400 4.51 1,648 -4.41 n/a n/a n/a
2024-05-15 2024-03-31 13F UNDER ARMOUR CL C Call 241,500 87.79 1,724 60.67 n/a n/a n/a
2024-02-14 2023-12-31 13F UNDER ARMOUR CL C Call 128,600 19.52 1,074 56.41 n/a n/a n/a
2023-11-14 2023-09-30 13F UNDER ARMOUR CL C Call 107,600 36.72 686 29.92 n/a n/a n/a
2023-08-14 2023-06-30 13F UNDER ARMOUR CL C Call 78,700 -25.26 528 -41.20 n/a n/a n/a
2023-05-15 2023-03-31 13F UNDER ARMOUR CL C Call 105,300 2.23 898 -2.18 n/a n/a n/a
2023-02-14 2022-12-31 13F UNDER ARMOUR CL C Call 103,000 -2.09 919 46.41 n/a n/a n/a
2022-11-14 2022-09-30 13F UNDER ARMOUR CL C Call 105,200 14.72 627 -9.78 n/a n/a n/a
2022-08-15 2022-06-30 13F UNDER ARMOUR CL C Call 91,700 -0.65 695 -51.60 n/a n/a n/a
2022-05-16 2022-03-31 13F UNDER ARMOUR CL C Call 92,300 -65.50 1,436 -70.24 n/a n/a n/a
2022-02-14 2021-12-31 13F UNDER ARMOUR CL C Call 267,500 -27.43 4,826 -25.27 n/a n/a n/a
2021-11-15 2021-09-30 13F UNDER ARMOUR Cmn Call 368,600 -6.42 6,458 -11.72 n/a n/a n/a
2021-08-16 2021-06-30 13F UNDER ARMOUR CL C Call 393,900 -6.15 7,315 -5.59 n/a n/a n/a
2021-05-21 2021-03-31 13F/A UNDER ARMOUR CL C Call 419,700 -1.92 7,748 21.69 n/a n/a n/a
2021-05-17 2021-03-31 13F UNDER ARMOUR CL C Call 419,700 7,748 n/a n/a n/a
2021-02-16 2020-12-31 13F UNDER ARMOUR CL C Call 427,900 2.27 6,367 54.65 n/a n/a n/a
2020-11-16 2020-09-30 13F UNDER ARMOUR CL C Call 418,400 36.73 4,117 52.20 n/a n/a n/a
2020-08-14 2020-06-30 13F UNDER ARMOUR Cmn Call 306,000 141.90 2,705 165.20 n/a n/a n/a
2020-05-15 2020-03-31 13F UNDER ARMOUR Cmn Call 126,500 -23.38 1,020 -67.79 n/a n/a n/a
2020-02-14 2019-12-31 13F UNDER ARMOUR Cmn Call 165,100 77.72 3,167 88.06 n/a n/a n/a
2019-11-14 2019-09-30 13F UNDER ARMOUR Cmn Call 92,900 -11.35 1,684 -27.63 n/a n/a n/a
2019-08-14 2019-06-30 13F UNDER ARMOUR Cmn Call 104,800 -32.17 2,327 -20.17 n/a n/a n/a
2019-05-15 2019-03-31 13F UNDER ARMOUR Cmn Call 154,500 -43.11 2,915 -33.63 n/a n/a n/a
2019-02-14 2018-12-31 13F UNDER ARMOUR Cmn Call 271,600 -18.88 4,392 -32.59 n/a n/a n/a
2018-11-13 2018-09-30 13F UNDER ARMOUR Cmn Call 334,800 -23.02 6,515 -28.94 n/a n/a n/a
2018-08-14 2018-06-30 13F/A UNDER ARMOUR Cmn Call 434,900 15.05 9,168 69.03 n/a n/a n/a
2018-08-10 2018-06-30 13F UNDER ARMOUR Cmn Call 434,900 9,168 n/a n/a n/a
2018-05-14 2018-03-31 13F/A UNDER ARMOUR Cmn Call 378,000 39.33 5,424 50.08 n/a n/a n/a
2018-05-11 2018-03-31 13F UNDER ARMOUR Cmn Call 378,000 5,424 n/a n/a n/a
2018-02-09 2017-12-31 13F UNDER ARMOUR Cmn Call 271,300 113.79 3,614 89.61 n/a n/a n/a
2017-11-09 2017-09-30 13F UNDER ARMOUR Cmn Call 126,900 -53.65 1,906 -65.47 n/a n/a n/a
2017-08-11 2017-06-30 13F UNDER ARMOUR Cmn Call 273,800 162.51 5,520 189.16 n/a n/a n/a
2017-05-12 2017-03-31 13F UNDER ARMOUR Cmn Call 104,300 178.88 1,909 102.87 n/a n/a n/a
2017-02-10 2016-12-31 13F UNDER ARMOUR Cmn Call 37,400 941 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
(%)
2026-05-15 2026-03-31 13F UNDER ARMOUR CL C Put 83,700 -39.91 485 -27.54 n/a n/a n/a
2026-02-17 2025-12-31 13F UNDER ARMOUR CL C Put 139,300 25.72 669 24.86 n/a n/a n/a
2025-11-14 2025-09-30 13F UNDER ARMOUR CL C Put 110,800 601.27 535 424.51 n/a n/a n/a
2025-08-14 2025-06-30 13F UNDER ARMOUR CL C Put 15,800 -69.08 103 -66.45 n/a n/a n/a
2025-05-15 2025-03-31 13F UNDER ARMOUR CL C Put 51,100 377.57 304 284.81 n/a n/a n/a
2025-02-14 2024-12-31 13F UNDER ARMOUR CL C Put 10,700 -62.72 80 -66.95 n/a n/a n/a
2024-11-14 2024-09-30 13F UNDER ARMOUR CL C Put 28,700 -42.71 240 -26.91 n/a n/a n/a
2024-08-14 2024-06-30 13F UNDER ARMOUR CL C Put 50,100 -30.71 327 -36.63 n/a n/a n/a
2024-05-15 2024-03-31 13F UNDER ARMOUR CL C Put 72,300 22.75 516 5.09 n/a n/a n/a
2024-02-14 2023-12-31 13F UNDER ARMOUR CL C Put 58,900 0.51 492 31.64 n/a n/a n/a
2023-11-14 2023-09-30 13F UNDER ARMOUR CL C Put 58,600 -46.97 374 -49.66 n/a n/a n/a
2023-08-14 2023-06-30 13F UNDER ARMOUR CL C Put 110,500 27.30 741 0.14 n/a n/a n/a
2023-05-15 2023-03-31 13F UNDER ARMOUR CL C Put 86,800 -15.40 740 -19.13 n/a n/a n/a
2023-02-14 2022-12-31 13F UNDER ARMOUR CL C Put 102,600 0.20 915 50.00 n/a n/a n/a
2022-11-14 2022-09-30 13F UNDER ARMOUR CL C Put 102,400 -23.92 610 -40.20 n/a n/a n/a
2022-08-15 2022-06-30 13F UNDER ARMOUR CL C Put 134,600 -5.08 1,020 -53.76 n/a n/a n/a
2022-05-16 2022-03-31 13F UNDER ARMOUR CL C Put 141,800 -49.34 2,206 -56.31 n/a n/a n/a
2022-02-14 2021-12-31 13F UNDER ARMOUR CL C Put 279,900 -41.38 5,049 -39.65 n/a n/a n/a
2021-11-15 2021-09-30 13F UNDER ARMOUR Cmn Put 477,500 18.02 8,366 11.35 n/a n/a n/a
2021-08-16 2021-06-30 13F UNDER ARMOUR CL C Put 404,600 -17.46 7,513 -16.97 n/a n/a n/a
2021-05-21 2021-03-31 13F/A UNDER ARMOUR CL C Put 490,200 83.87 9,049 128.11 n/a n/a n/a
2021-05-17 2021-03-31 13F UNDER ARMOUR CL C Put 490,200 9,049 n/a n/a n/a
2021-02-16 2020-12-31 13F UNDER ARMOUR CL C Put 266,600 34.24 3,967 103.02 n/a n/a n/a
2020-11-16 2020-09-30 13F UNDER ARMOUR CL C Put 198,600 127.49 1,954 153.11 n/a n/a n/a
2020-08-14 2020-06-30 13F UNDER ARMOUR Cmn Put 87,300 -26.82 772 -19.75 n/a n/a n/a
2020-05-15 2020-03-31 13F UNDER ARMOUR Cmn Put 119,300 -14.23 962 -63.94 n/a n/a n/a
2020-02-14 2019-12-31 13F UNDER ARMOUR Cmn Put 139,100 32.10 2,668 39.76 n/a n/a n/a
2019-11-14 2019-09-30 13F UNDER ARMOUR Cmn Put 105,300 16.87 1,909 -4.55 n/a n/a n/a
2019-08-14 2019-06-30 13F UNDER ARMOUR Cmn Put 90,100 -21.10 2,000 -7.19 n/a n/a n/a
2019-05-15 2019-03-31 13F UNDER ARMOUR Cmn Put 114,200 -17.96 2,155 -4.26 n/a n/a n/a
2019-02-14 2018-12-31 13F UNDER ARMOUR Cmn Put 139,200 4.35 2,251 -13.29 n/a n/a n/a
2018-11-13 2018-09-30 13F UNDER ARMOUR Cmn Put 133,400 8.19 2,596 -0.12 n/a n/a n/a
2018-08-14 2018-06-30 13F/A UNDER ARMOUR Cmn Put 123,300 -12.86 2,599 27.97 n/a n/a n/a
2018-08-10 2018-06-30 13F UNDER ARMOUR Cmn Put 123,300 2,599 n/a n/a n/a
2018-05-14 2018-03-31 13F/A UNDER ARMOUR Cmn Put 141,500 -37.80 2,031 -32.97 n/a n/a n/a
2018-05-11 2018-03-31 13F UNDER ARMOUR Cmn Put 141,500 2,031 n/a n/a n/a
2018-02-09 2017-12-31 13F UNDER ARMOUR Cmn Put 227,500 -45.38 3,030 -51.57 n/a n/a n/a
2017-11-09 2017-09-30 13F UNDER ARMOUR Cmn Put 416,500 17.59 6,256 -12.39 n/a n/a n/a
2017-08-11 2017-06-30 13F UNDER ARMOUR Cmn Put 354,200 74.05 7,141 91.76 n/a n/a n/a
2017-05-12 2017-03-31 13F UNDER ARMOUR Cmn Put 203,500 93.99 3,724 41.06 n/a n/a n/a
2017-02-10 2016-12-31 13F UNDER ARMOUR Cmn Put 104,900 594.70 2,640 416.63 n/a n/a n/a
2017-01-31 2016-09-30 13F/A UNDER ARMOUR Cmn Put 15,100 511 n/a n/a n/a
2016-11-10 2016-09-30 13F UNDER ARMOUR INC-CLASS C Cmn Put 15,100 511 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.