Under Armour, Inc.
US ˙ NYSE ˙ US9043112062

SecurityUA / Under Armour, Inc.
InstitutionSimplex Trading, Llc
Latest Disclosed Ownership66,547 shares
Latest Disclosed Value $ 385,307
Simplex Trading, Llc reports 30.97% decrease in ownership of UA / Under Armour, Inc.

On May 14, 2026 - Simplex Trading, Llc filed a 13F-HR form disclosing ownership of 66,547 shares of Under Armour, Inc. (US:UA) valued at $385,307 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 96,399 shares of Under Armour, Inc.. This represents a change in shares of -30.97% during the quarter. The current value of the position is $352,699 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)
2026-05-14 2026-03-31 13F UNDER ARMOUR COM 904311206 66,547 -29,852 -30.97 385 -16.67 0.0001
2026-02-11 2025-12-31 13F UNDER ARMOUR COM 904311206 96,399 -5,473 -5.37 463 0.0003
2025-11-12 2025-09-30 13F UNDER ARMOUR COM 904311206 101,872 86,684 570.74 0 0.0003
2025-08-05 2025-06-30 13F UNDER ARMOUR COM 904311206 15,188 1,123 7.98 0 0.0001
2025-05-12 2025-03-31 13F UNDER ARMOUR COM 904311206 14,065 1,637 13.17 0 0.0001
2025-02-11 2024-12-31 13F UNDER ARMOUR COM 904311206 12,428 -27,325 -68.74 0 0.0001
2024-11-08 2024-09-30 13F UNDER ARMOUR COM 904311206 39,753 38,133 2,353.89 0 0.0002
2024-07-25 2024-06-30 13F UNDER ARMOUR COM 904311206 1,620 -5,906 -78.47 0 0.0000
2024-04-25 2024-03-31 13F UNDER ARMOUR COM 904311206 7,526 -172,123 -95.81 0 -100.00 0.0000
2024-02-02 2023-12-31 13F UNDER ARMOUR COM 904311206 179,649 59,772 49.86 2 0.0010
2023-11-01 2023-09-30 13F UNDER ARMOUR COM 904311206 119,877 42,727 55.38 1 0.0006
2023-08-04 2023-06-30 13F UNDER ARMOUR COM 904311206 77,150 28,218 57.67 1 -100.00 0.0004
2023-04-27 2023-03-31 13F UNDER ARMOUR COM 904311206 48,932 -30,595 -38.47 0 0.0004
2023-02-02 2022-12-31 13F UNDER ARMOUR COM 904311206 79,527 28,117 54.69 1 -100.00 0.0008
2022-11-04 2022-09-30 13F UNDER ARMOUR COM 904311206 51,410 23,054 81.30 306 42.99 0.0003
2022-08-03 2022-06-30 13F UNDER ARMOUR COM 904311206 28,356 -13,332 -31.98 214 -66.98 0.0002
2022-05-02 2022-03-31 13F UNDER ARMOUR COM 904311206 41,688 -28,235 -40.38 648 -48.61 0.0006
2022-02-23 2021-12-31 13F/A-1 UNDER ARMOUR COM 904311206 69,923 -12,333 -14.99 1,261 -18.43 0.0013
2022-02-04 2021-12-31 13F UNDER ARMOUR COM 904311206 82,256 0 1,546 0.0014
2021-10-28 2021-09-30 13F UNDER ARMOUR COM 904311206 82,256 1,776 2.21 1,546 3.48 0.0014
2021-08-12 2021-06-30 13F UNDER ARMOUR COM 904311206 80,480 -119,801 -59.82 1,494 -59.59 0.0014
2021-04-26 2021-03-31 13F UNDER ARMOUR COM 904311206 200,281 199,012 15,682.58 3,697 20,438.89 0.0066
2021-02-02 2020-12-31 13F UNDER ARMOUR COM 904311206 1,269 -1,073 -45.82 18 -10.00 0.0000
2020-07-13 2020-06-30 13F UNDER ARMOUR COM 904311206 2,342 -3,313 -58.59 20 -55.56 0.0000
2020-04-29 2020-03-31 13F UNDER ARMOUR COM 904311206 5,655 -54,716 -90.63 45 -96.11 0.0001
2020-02-05 2019-12-31 13F UNDER ARMOUR COM 904311206 60,371 48,883 425.51 1,157 456.25 0.0025
2019-10-15 2019-09-30 13F UNDER ARMOUR COM 904311206 11,488 6,861 148.28 208 103.92 0.0006
2019-07-26 2019-06-30 13F UNDER ARMOUR COM 904311206 4,627 -38,779 -89.34 102 -87.55 0.0003
2019-04-18 2019-03-31 13F UNDER ARMOUR COM 904311206 43,406 -10,961 -20.16 819 -6.83 0.0023
2019-01-16 2018-12-31 13F UNDER ARMOUR COM 904311206 54,367 30,531 128.09 879 89.85 0.0026
2018-10-23 2018-09-30 13F UNDER ARMOUR COM 904311206 23,836 23,836 463 0.0015
2018-07-30 2018-06-30 13F UNDER ARMOUR COM 904311206 0 -54,331 -100.00 0 -100.00
2018-04-26 2018-03-31 13F UNDER ARMOUR COM 904311206 54,331 -7,574 -12.23 779 -5.46 0.0343
2018-01-10 2017-12-31 13F UNDER ARMOUR COM 904311206 61,905 22,710 57.94 824 40.14 0.0355
2017-10-25 2017-09-30 13F UNDER ARMOUR COM 904311206 39,195 43 0.11 588 -25.48 0.0240
2017-07-12 2017-06-30 13F UNDER ARMOUR COM 904311206 39,152 -18,219 -31.76 789 -24.79 0.0343
2017-04-21 2017-03-31 13F UNDER ARMOUR COM 904311206 57,371 55,480 2,933.90 1,049 2,131.91 0.0454
2017-01-11 2016-12-31 13F UNDER ARMOUR COM 904311206 1,891 -7,334 -79.50 47 -85.97 0.0028
2016-07-18 2016-06-30 13F UNDER ARMOUR COM 904311206 9,225 9,225 335 0.0224
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.