Under Armour, Inc.
US ˙ NYSE ˙ US9043111072

SecurityUAA / Under Armour, Inc.
InstitutionSimplex Trading, Llc
Latest Disclosed Ownership897,041 shares
Latest Disclosed Value $ 5,301,512
Simplex Trading, Llc ownership in UAA / Under Armour, Inc.

On May 14, 2026 - Simplex Trading, Llc filed a 13F-HR form disclosing ownership of 897,041 shares of Under Armour, Inc. (US:UAA) valued at $5,301,512 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 1,140,496 shares of Under Armour, Inc.. This represents a change in shares of -21.35% during the quarter. The current value of the position is $4,888,873 USD.

Simplex Trading, Llc has a history of taking positions in derivatives of the underlying security (UAA) in the form of stock options. The firm currently holds call options representing 208,100 of underlying shares valued at $1,224,435 USD and put options representing 1,583,000 of underlying shares valued at $9,346,986 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.

UAA / 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)
2026-05-14 2026-03-31 13F UNDER ARMOUR COM 904311107 897,041 -243,455 -21.35 5,302 -6.47 0.0017
2026-02-11 2025-12-31 13F UNDER ARMOUR COM 904311107 1,140,496 410,009 56.13 5,668 188,833.33 0.0032
2025-11-12 2025-09-30 13F UNDER ARMOUR COM 904311107 730,487 283,413 63.39 4 0.00 0.0019
2025-08-05 2025-06-30 13F UNDER ARMOUR COM 904311107 447,074 3,427 0.77 3 50.00 0.0017
2025-05-12 2025-03-31 13F UNDER ARMOUR COM 904311107 443,647 262,106 144.38 3 100.00 0.0018
2025-02-11 2024-12-31 13F UNDER ARMOUR COM 904311107 181,541 6,059 3.45 2 0.00 0.0008
2024-11-08 2024-09-30 13F UNDER ARMOUR COM 904311107 175,482 -260,307 -59.73 2 -50.00 0.0009
2024-07-25 2024-06-30 13F UNDER ARMOUR COM 904311107 435,789 27,135 6.64 3 -33.33 0.0018
2024-04-25 2024-03-31 13F UNDER ARMOUR COM 904311107 408,654 243,659 147.68 3 200.00 0.0017
2024-02-02 2023-12-31 13F UNDER ARMOUR COM 904311107 164,995 -18,182 -9.93 1 0.00 0.0009
2023-11-01 2023-09-30 13F UNDER ARMOUR COM 904311107 183,177 183,177 25.75 1 0.00 0.0010
2023-08-04 2023-06-30 13F UNDER ARMOUR COM 904311107 0 -145,670 -100.00 0 -100.00
2023-04-27 2023-03-31 13F UNDER ARMOUR COM 904311107 145,670 145,670 47.72 1 -99.95 0.0012
2022-05-02 2022-03-31 13F UNDER ARMOUR COM 904311107 0 -98,611 -100.00 0 -100.00
2022-02-04 2021-12-31 13F UNDER ARMOUR COM 904311107 98,611 0 0.00 2,100 0.00 0.0020
2021-10-28 2021-09-30 13F UNDER ARMOUR COM 904311107 98,611 1,100 1.13 2,100 1.84 0.0020
2021-08-12 2021-06-30 13F UNDER ARMOUR COM 904311107 97,511 91,943 1,651.28 2,062 2,070.53 0.0020
2021-02-02 2020-12-31 13F UNDER ARMOUR COM 904311107 5,568 -13,763 -71.20 95 -56.22 0.0001
2020-10-14 2020-09-30 13F UNDER ARMOUR COM 904311107 19,331 -27,740 -58.93 217 -72.00 0.0003
2017-10-25 2017-09-30 13F UNDER ARMOUR COM 904311107 47,071 17,019 56.63 775 18.68 0.0316
2017-07-12 2017-06-30 13F UNDER ARMOUR COM 904311107 30,052 -95,948 -76.15 653 -73.80 0.0284
2017-04-21 2017-03-31 13F UNDER ARMOUR COM 904311107 126,000 124,211 6,943.04 2,492 3,511.59 0.1078
2016-10-07 2016-09-30 13F UNDER ARMOUR COM 904311107 1,789 -7,211 -80.12 69 -80.89 0.0047
2016-07-18 2016-06-30 13F UNDER ARMOUR COM 904311107 9,000 -5,001 -35.72 361 -69.59 0.0241
2016-04-14 2016-03-31 13F UNDER ARMOUR COM 904311107 14,001 -11,541 -45.18 1,187 -42.32 0.0946
2016-01-20 2015-12-31 13F UNDER ARMOUR COM 904311107 25,542 14,732 136.28 2,058 96.75 0.1612
2015-10-08 2015-09-30 13F UNDER ARMOUR COM 904311107 10,810 10,810 1,046 0.0767
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
(%)
2026-05-14 2026-03-31 13F UNDER ARMOUR CALL Call 208,100 183.90 1,224 240.95 n/a n/a n/a
2026-02-11 2025-12-31 13F UNDER ARMOUR CALL Call 73,300 32.55 360 n/a n/a n/a
2025-11-12 2025-09-30 13F UNDER ARMOUR CALL Call 55,300 -33.37 0 n/a n/a n/a
2025-08-05 2025-06-30 13F UNDER ARMOUR CALL Call 83,000 -24.13 1 n/a n/a n/a
2025-05-12 2025-03-31 13F UNDER ARMOUR CALL Call 109,400 -56.31 1 -100.00 n/a n/a n/a
2025-02-11 2024-12-31 13F UNDER ARMOUR CALL Call 250,400 -27.31 2 -50.00 n/a n/a n/a
2024-11-08 2024-09-30 13F UNDER ARMOUR CALL Call 344,500 -4.36 3 0.00 n/a n/a n/a
2024-07-25 2024-06-30 13F UNDER ARMOUR CALL Call 360,200 2.74 2 0.00 n/a n/a n/a
2024-04-25 2024-03-31 13F UNDER ARMOUR CALL Call 350,600 -21.74 3 -33.33 n/a n/a n/a
2024-02-02 2023-12-31 13F UNDER ARMOUR CALL Call 448,000 -4.07 4 0.00 n/a n/a n/a
2023-11-01 2023-09-30 13F UNDER ARMOUR CALL Call 467,000 68.23 3 200.00 n/a n/a n/a
2023-08-04 2023-06-30 13F UNDER ARMOUR CALL Call 277,600 -22.82 2 -66.67 n/a n/a n/a
2023-04-27 2023-03-31 13F UNDER ARMOUR CALL Call 359,700 -31.98 3 -40.00 n/a n/a n/a
2023-02-02 2022-12-31 13F UNDER ARMOUR CALL Call 528,800 36.68 5 -99.80 n/a n/a n/a
2022-11-04 2022-09-30 13F UNDER ARMOUR CALL Call 386,900 -57.27 2,475 -66.71 n/a n/a n/a
2022-08-03 2022-06-30 13F UNDER ARMOUR CALL Call 905,400 6.95 7,435 -47.32 n/a n/a n/a
2022-05-02 2022-03-31 13F UNDER ARMOUR CALL Call 846,600 107.60 14,113 79.71 n/a n/a n/a
2022-02-23 2021-12-31 13F/A UNDER ARMOUR CALL Call 407,800 -15.48 7,853 -20.86 n/a n/a n/a
2022-02-04 2021-12-31 13F UNDER ARMOUR CALL Call 482,500 9,923 n/a n/a n/a
2021-10-28 2021-09-30 13F UNDER ARMOUR CALL Call 482,500 -0.04 9,923 0.87 n/a n/a n/a
2021-08-12 2021-06-30 13F UNDER ARMOUR CALL Call 482,700 13,084.92 9,837 236.08 n/a n/a n/a
2021-04-26 2021-03-31 13F UNDER ARMOUR CALL Call 3,661 -23.01 2,927 -60.52 n/a n/a n/a
2021-02-02 2020-12-31 13F UNDER ARMOUR CALL Call 4,755 9.13 7,414 61.42 n/a n/a n/a
2020-10-14 2020-09-30 13F UNDER ARMOUR CALL Call 4,357 26.00 4,593 41.98 n/a n/a n/a
2020-07-13 2020-06-30 13F UNDER ARMOUR CALL Call 3,458 174.66 3,235 196.79 n/a n/a n/a
2020-04-29 2020-03-31 13F UNDER ARMOUR CALL Call 1,259 -40.36 1,090 -75.21 n/a n/a n/a
2020-02-05 2019-12-31 13F UNDER ARMOUR CALL Call 2,111 16.69 4,397 24.91 n/a n/a n/a
2019-10-15 2019-09-30 13F UNDER ARMOUR CALL Call 1,809 17.85 3,520 -5.45 n/a n/a n/a
2019-07-26 2019-06-30 13F UNDER ARMOUR CALL Call 1,535 -10.65 3,723 3.82 n/a n/a n/a
2019-04-18 2019-03-31 13F UNDER ARMOUR CALL Call 1,718 -45.08 3,586 -33.78 n/a n/a n/a
2019-01-16 2018-12-31 13F UNDER ARMOUR CALL Call 3,128 184.62 5,415 140.56 n/a n/a n/a
2018-10-23 2018-09-30 13F UNDER ARMOUR CALL Call 1,099 -55.01 2,251 -58.18 n/a n/a n/a
2018-07-30 2018-06-30 13F UNDER ARMOUR CALL Call 2,443 71.80 5,383 2,674.74 n/a n/a n/a
2018-04-26 2018-03-31 13F UNDER ARMOUR CALL Call 1,422 -15.56 194 162.16 n/a n/a n/a
2018-01-10 2017-12-31 13F UNDER ARMOUR CALL Call 1,684 19.86 74 270.00 n/a n/a n/a
2017-10-25 2017-09-30 13F UNDER ARMOUR CALL Call 1,405 -49.44 20 -94.05 n/a n/a n/a
2017-07-12 2017-06-30 13F UNDER ARMOUR CALL Call 2,779 7.55 336 134.97 n/a n/a n/a
2017-04-21 2017-03-31 13F UNDER ARMOUR CALL Call 2,584 -19.20 143 -46.24 n/a n/a n/a
2017-01-11 2016-12-31 13F UNDER ARMOUR CALL Call 3,198 114.49 266 -12.21 n/a n/a n/a
2016-10-07 2016-09-30 13F UNDER ARMOUR CALL Call 1,491 1.08 303 -43.05 n/a n/a n/a
2016-07-18 2016-06-30 13F UNDER ARMOUR CALL Call 1,475 153.44 532 54.20 n/a n/a n/a
2016-04-14 2016-03-31 13F UNDER ARMOUR CALL Call 582 -37.95 345 -4.96 n/a n/a n/a
2016-01-20 2015-12-31 13F UNDER ARMOUR CALL Call 938 1.19 363 -54.11 n/a n/a n/a
2015-10-08 2015-09-30 13F UNDER ARMOUR CALL Call 927 8.93 791 83.53 n/a n/a n/a
2015-07-08 2015-06-30 13F UNDER ARMOUR CALL Call 851 91.67 431 -26.70 n/a n/a n/a
2015-04-21 2015-03-31 13F UNDER ARMOUR CALL Call 444 -58.39 588 54.33 n/a n/a n/a
2015-03-04 2014-12-31 13F UNDER ARMOUR CALL Call 1,067 381 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
(%)
2026-05-14 2026-03-31 13F UNDER ARMOUR PUT Put 1,583,000 -4.44 9,347 13.75 n/a n/a n/a
2026-02-11 2025-12-31 13F UNDER ARMOUR PUT Put 1,656,600 53.20 8,217 164,220.00 n/a n/a n/a
2025-11-12 2025-09-30 13F UNDER ARMOUR PUT Put 1,081,300 92.81 5 66.67 n/a n/a n/a
2025-08-05 2025-06-30 13F UNDER ARMOUR PUT Put 560,800 10.07 4 0.00 n/a n/a n/a
2025-05-12 2025-03-31 13F UNDER ARMOUR PUT Put 509,500 125.14 3 200.00 n/a n/a n/a
2025-02-11 2024-12-31 13F UNDER ARMOUR PUT Put 226,300 63.63 2 0.00 n/a n/a n/a
2024-11-08 2024-09-30 13F UNDER ARMOUR PUT Put 138,300 -77.30 1 -75.00 n/a n/a n/a
2024-07-25 2024-06-30 13F UNDER ARMOUR PUT Put 609,300 6.35 4 0.00 n/a n/a n/a
2024-04-25 2024-03-31 13F UNDER ARMOUR PUT Put 572,900 140.41 4 100.00 n/a n/a n/a
2024-02-02 2023-12-31 13F UNDER ARMOUR PUT Put 238,300 -14.92 2 100.00 n/a n/a n/a
2023-11-01 2023-09-30 13F UNDER ARMOUR PUT Put 280,100 -9.47 2 -50.00 n/a n/a n/a
2023-08-04 2023-06-30 13F UNDER ARMOUR PUT Put 309,400 -54.29 2 -66.67 n/a n/a n/a
2023-04-27 2023-03-31 13F UNDER ARMOUR PUT Put 676,900 202.05 6 200.00 n/a n/a n/a
2023-02-02 2022-12-31 13F UNDER ARMOUR PUT Put 224,100 56.93 2 -99.78 n/a n/a n/a
2022-11-04 2022-09-30 13F UNDER ARMOUR PUT Put 142,800 -26.99 906 -43.05 n/a n/a n/a
2022-08-03 2022-06-30 13F UNDER ARMOUR PUT Put 195,600 23.56 1,591 -39.37 n/a n/a n/a
2022-05-02 2022-03-31 13F UNDER ARMOUR PUT Put 158,300 -56.96 2,624 -63.37 n/a n/a n/a
2022-02-23 2021-12-31 13F/A UNDER ARMOUR PUT Put 367,800 -44.21 7,164 -46.60 n/a n/a n/a
2022-02-04 2021-12-31 13F UNDER ARMOUR PUT Put 659,300 13,416 n/a n/a n/a
2021-10-28 2021-09-30 13F UNDER ARMOUR PUT Put 659,300 0.55 13,416 1.40 n/a n/a n/a
2021-08-12 2021-06-30 13F UNDER ARMOUR PUT Put 655,700 12,891.88 13,231 219.44 n/a n/a n/a
2021-04-26 2021-03-31 13F UNDER ARMOUR PUT Put 5,047 13.80 4,142 -42.76 n/a n/a n/a
2021-02-02 2020-12-31 13F UNDER ARMOUR PUT Put 4,435 59.99 7,236 142.49 n/a n/a n/a
2020-10-14 2020-09-30 13F UNDER ARMOUR PUT Put 2,772 27.10 2,984 45.00 n/a n/a n/a
2020-07-13 2020-06-30 13F UNDER ARMOUR PUT Put 2,181 76.89 2,058 94.15 n/a n/a n/a
2020-04-29 2020-03-31 13F UNDER ARMOUR PUT Put 1,233 35.94 1,060 -41.98 n/a n/a n/a
2020-02-05 2019-12-31 13F UNDER ARMOUR PUT Put 907 -21.88 1,827 -18.18 n/a n/a n/a
2019-10-15 2019-09-30 13F UNDER ARMOUR PUT Put 1,161 -3.65 2,233 -21.59 n/a n/a n/a
2019-07-26 2019-06-30 13F UNDER ARMOUR PUT Put 1,205 -40.64 2,848 -29.50 n/a n/a n/a
2019-04-18 2019-03-31 13F UNDER ARMOUR PUT Put 2,030 22.44 4,040 43.87 n/a n/a n/a
2019-01-16 2018-12-31 13F UNDER ARMOUR PUT Put 1,658 15.70 2,808 -4.91 n/a n/a n/a
2018-10-23 2018-09-30 13F UNDER ARMOUR PUT Put 1,433 91.58 2,953 82.28 n/a n/a n/a
2018-07-30 2018-06-30 13F UNDER ARMOUR PUT Put 748 -54.17 1,620 58.36 n/a n/a n/a
2018-04-26 2018-03-31 13F UNDER ARMOUR PUT Put 1,632 -40.46 1,023 -57.94 n/a n/a n/a
2018-01-10 2017-12-31 13F UNDER ARMOUR PUT Put 2,741 -20.80 2,432 22.21 n/a n/a n/a
2017-10-25 2017-09-30 13F UNDER ARMOUR PUT Put 3,461 -29.81 1,990 24.92 n/a n/a n/a
2017-07-12 2017-06-30 13F UNDER ARMOUR PUT Put 4,931 10.66 1,593 -33.90 n/a n/a n/a
2017-04-21 2017-03-31 13F UNDER ARMOUR PUT Put 4,456 65.71 2,410 66.21 n/a n/a n/a
2017-01-11 2016-12-31 13F UNDER ARMOUR PUT Put 2,689 20.85 1,450 220.80 n/a n/a n/a
2016-10-07 2016-09-30 13F UNDER ARMOUR PUT Put 2,225 1.14 452 5.85 n/a n/a n/a
2016-07-18 2016-06-30 13F UNDER ARMOUR PUT Put 2,200 16.59 427 49.30 n/a n/a n/a
2016-04-14 2016-03-31 13F UNDER ARMOUR PUT Put 1,887 38.34 286 -64.29 n/a n/a n/a
2016-01-20 2015-12-31 13F UNDER ARMOUR PUT Put 1,364 7.40 801 121.88 n/a n/a n/a
2015-10-08 2015-09-30 13F UNDER ARMOUR PUT Put 1,270 400.00 361 594.23 n/a n/a n/a
2015-07-08 2015-06-30 13F UNDER ARMOUR PUT Put 254 63.87 52 225.00 n/a n/a n/a
2015-04-21 2015-03-31 13F UNDER ARMOUR PUT Put 155 -49.84 16 -57.89 n/a n/a n/a
2015-03-04 2014-12-31 13F UNDER ARMOUR PUT Put 309 38 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.