Under Armour, Inc.
MX ˙ BMV ˙ US9043111072
SecurityMX:UAA / Under Armour, Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership466,898 shares
Latest Disclosed Value $ 2,759,336
Rhumbline Advisers reports 3.62% increase in ownership of UAA / Under Armour, Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 466,898 shares of Under Armour, Inc. (MX:UAA) valued at $2,759,336 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 450,570 shares of Under Armour, Inc.. This represents a change in shares of 3.62% during the quarter.

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)
2026-05-12 2026-03-31 13F UNDER ARMOUR INC CL A COM 904311107 466,898 16,328 3.62 2,759 23.22 0.0024
2026-02-13 2025-12-31 13F UNDER ARMOUR INC CL A COM 904311107 450,570 -50,457 -10.07 2,239 -10.44 0.0018
2025-11-06 2025-09-30 13F UNDER ARMOUR INC CL A COM 904311107 501,027 -20,566 -3.94 2,500 -29.81 0.0020
2025-08-12 2025-06-30 13F UNDER ARMOUR INC CL A COM 904311107 521,593 20,446 4.08 3,562 13.73 0.0031
2025-05-29 2025-03-31 13F/A-1 UNDER ARMOUR INC CL A COM 904311107 501,147 6,607 1.34 3,132 -23.50 0.0029
2025-04-08 2025-03-31 13F UNDER ARMOUR INC CL A COM 904311107 501,147 6,607 3,132 0.0029
2025-05-29 2024-12-31 13F/A-1 UNDER ARMOUR INC CL A COM 904311107 494,540 -4,031 -0.81 4,095 -7.83 0.0037
2025-01-30 2024-12-31 13F UNDER ARMOUR INC CL A COM 904311107 494,540 -4,031 4,095 0.0037
2024-11-12 2024-09-30 13F UNDER ARMOUR INC CL A COM 904311107 498,571 1,830 0.37 4,442 34.08 0.0040
2024-08-01 2024-06-30 13F UNDER ARMOUR INC CL A COM 904311107 496,741 -15,577 -3.04 3,313 -12.35 0.0031
2024-05-09 2024-03-31 13F UNDER ARMOUR INC CL A COM 904311107 512,318 -25,986 -4.83 3,781 -20.10 0.0036
2024-02-08 2023-12-31 13F UNDER ARMOUR INC CL A COM 904311107 538,304 -17,672 -3.18 4,732 24.24 0.0050
2023-11-09 2023-09-30 13F UNDER ARMOUR INC CL A COM 904311107 555,976 4,591 0.83 3,808 -4.32 0.0044
2023-08-08 2023-06-30 13F UNDER ARMOUR INC CL A COM 904311107 551,385 -15,906 -2.80 3,981 79,500.00 0.0045
2023-05-11 2023-03-31 13F UNDER ARMOUR INC CL A COM 904311107 567,291 -4,614 -0.81 5 -99.91 0.0066
2023-02-14 2022-12-31 13F UNDER ARMOUR INC CL A COM 904311107 571,905 36,600 6.84 5,811 63.23 0.0078
2022-11-10 2022-09-30 13F UNDER ARMOUR INC CL A COM 904311107 535,305 4,931 0.93 3,560 -19.42 0.0053
2022-08-11 2022-06-30 13F UNDER ARMOUR INC CL A COM 904311107 530,374 227,052 74.86 4,418 -14.43 0.0064
2022-05-12 2022-03-31 13F UNDER ARMOUR INC CL A COM 904311107 303,322 -15,444 -4.84 5,163 -23.57 0.0066
2022-02-10 2021-12-31 13F UNDER ARMOUR INC CL A COM 904311107 318,766 -1,557 -0.49 6,755 4.50 0.0083
2021-11-12 2021-09-30 13F UNDER ARMOUR INC CL A COM 904311107 320,323 1,991 0.63 6,464 -4.00 0.0087
2021-08-05 2021-06-30 13F UNDER ARMOUR INC CL A COM 904311107 318,332 -13,884 -4.18 6,733 -8.54 0.0088
2021-05-06 2021-03-31 13F UNDER ARMOUR INC CL A COM 904311107 332,216 -17,769 -5.08 7,362 22.52 0.0100
2021-02-10 2020-12-31 13F UNDER ARMOUR INC CL A COM 904311107 349,985 8,382 2.45 6,009 56.65 0.0083
2020-11-12 2020-09-30 13F UNDER ARMOUR INC CL A COM 904311107 341,603 558 0.16 3,836 15.47 0.0060
2020-08-13 2020-06-30 13F UNDER ARMOUR INC CL A COM 904311107 341,045 -4,011 -1.16 3,322 4.53 0.0055
2020-05-06 2020-03-31 13F UNDER ARMOUR INC CL A COM 904311107 345,056 26,844 8.44 3,178 -53.76 0.0067
2020-02-05 2019-12-31 13F UNDER ARMOUR INC CL A COM 904311107 318,212 13,481 4.42 6,873 13.12 0.0115
2019-10-23 2019-09-30 13F UNDER ARMOUR INC CL A COM 904311107 304,731 -977 -0.32 6,076 -21.60 0.0111
2019-08-14 2019-06-30 13F UNDER ARMOUR INC CL A COM 904311107 305,708 -6,933 -2.22 7,750 17.26 0.0145
2019-05-01 2019-03-31 13F UNDER ARMOUR INC CL A COM 904311107 312,641 -15,678 -4.78 6,609 13.93 0.0128
2019-01-31 2018-12-31 13F UNDER ARMOUR INC CL A COM 904311107 328,319 -7,909 -2.35 5,801 -18.70 0.0126
2018-11-07 2018-09-30 13F UNDER ARMOUR INC CL A COM 904311107 336,228 -3,158 -0.93 7,135 -6.48 0.0138
2018-08-06 2018-06-30 13F UNDER ARMOUR INC CL A COM 904311107 339,386 4,656 1.39 7,629 39.39 0.0154
2018-05-02 2018-03-31 13F UNDER ARMOUR INC CL A COM 904311107 334,730 113 0.03 5,473 13.34 0.0114
2018-02-09 2017-12-31 13F UNDER ARMOUR INC CL A COM 904311107 334,617 2,474 0.74 4,829 -11.78 0.0098
2017-11-06 2017-09-30 13F UNDER ARMOUR INC CL A COM 904311107 332,143 -3,092 -0.92 5,474 -24.96 0.0119
2017-08-02 2017-06-30 13F UNDER ARMOUR INC CL A COM 904311107 335,235 -654 -0.19 7,295 9.80 0.0167
2017-05-02 2017-03-31 13F UNDER ARMOUR INC CL A COM 904311107 335,889 5,443 1.65 6,644 -30.78 0.0155
2017-01-27 2016-12-31 13F UNDER ARMOUR INC CL A COM 904311107 330,446 25,527 8.37 9,599 -18.61 0.0243
2016-11-08 2016-09-30 13F UNDER ARMOUR INC CL A COM 904311107 304,919 17,419 6.06 11,794 2.23 0.0325
2016-08-11 2016-06-30 13F UNDER ARMOUR INC CL A COM 904311107 287,500 17,904 6.64 11,537 -49.55 0.0342
2016-05-02 2016-03-31 13F UNDER ARMOUR INC COMMO COM 904311107 269,596 3,845 1.45 22,870 6.76 0.0710
2016-02-03 2015-12-31 13F UNDER ARMOUR INC COMMO COM 904311107 265,751 3,240 1.23 21,422 -15.68 0.0689
2015-11-04 2015-09-30 13F UNDER ARMOUR INC COMMO COM 904311107 262,511 8,631 3.40 25,406 19.93 0.0864
2015-08-04 2015-06-30 13F UNDER ARMOUR INC COMMO COM 904311107 253,880 13,459 5.60 21,184 9.12 0.0675
2015-05-12 2015-03-31 13F UNDER ARMOUR INC COMMO COM 904311107 240,421 2,800 1.18 19,414 20.33 0.0560
2015-02-06 2014-12-31 13F UNDER ARMOUR INC COMMO COM 904311107 237,621 -1,420 -0.59 16,134 -2.32 0.0469
2014-11-12 2014-09-30 13F UNDER ARMOUR INC COMMO COM 904311107 239,041 20,777 9.52 16,518 27.21 0.0496
2014-08-06 2014-06-30 13F UNDER ARMOUR INC COMMO COM 904311107 218,264 90,811 71.25 12,985 -11.13 0.0381
2014-05-06 2014-03-31 13F UNDER ARMOUR INC COMMO COM 904311107 127,453 -2,687 -2.06 14,611 28.61 0.0433
2014-02-03 2013-12-31 13F UNDER ARMOUR INC COMMO COM 904311107 130,140 -13,066 -9.12 11,361 -0.15 0.0335
2013-11-05 2013-09-30 13F UNDER ARMOUR INC COMMO COM 904311107 143,206 1,465 1.03 11,378 34.44 0.0353
2013-08-07 2013-06-30 13F UNDER ARMOUR INC COMMO COM 904311107 141,741 141,741 8,463 0.0272
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.