Under Armour, Inc.
MX ˙ BMV ˙ US9043111072
SecurityMX:UAA / Under Armour, Inc.
InstitutionMarshall Wace, Llp
Latest Disclosed Ownership1,274,711 shares
Latest Disclosed Value $ 7,533,542
Marshall Wace, Llp ownership in UAA / Under Armour, Inc.

On May 14, 2026 - Marshall Wace, Llp filed a 13F-HR form disclosing ownership of 1,274,711 shares of Under Armour, Inc. (MX:UAA) valued at $7,533,542 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,608,419 shares of Under Armour, Inc.. This represents a change in shares of -51.13% during the quarter.

Marshall Wace, Llp 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 200 of underlying shares valued at $1,182 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.

MX: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-A COMMON STOCK 904311107 1,274,711 -1,333,708 -51.13 7,534 -41.89 0.0075
2026-02-13 2025-12-31 13F UNDER ARMOUR-A COMMON STOCK 904311107 2,608,419 -3,688,124 -58.57 12,964 -58.74 0.0118
2025-11-13 2025-09-30 13F UNDER ARMOUR-A COMMON STOCK 904311107 6,296,543 3,351,976 113.84 31,420 56.23 0.0319
2025-08-13 2025-06-30 13F UNDER ARMOUR-A COMMON STOCK 904311107 2,944,567 1,537,713 109.30 20,111 128.74 0.0227
2025-05-15 2025-03-31 13F UNDER ARMOUR-A COMMON STOCK 904311107 1,406,854 1,406,854 8,793 0.0112
2025-02-13 2024-12-31 13F UNDER ARMOUR-A COMMON STOCK 904311107 0 -567,249 -100.00 0 -100.00
2024-11-14 2024-09-30 13F UNDER ARMOUR-A COMMON STOCK 904311107 567,249 -100,912 -15.10 5,054 13.42 0.0062
2024-08-14 2024-06-30 13F UNDER ARMOUR-A COMMON STOCK 904311107 668,161 -1,251,972 -65.20 4,457 -68.55 0.0060
2024-05-15 2024-03-31 13F UNDER ARMOUR-A COMMON STOCK 904311107 1,920,133 -934,716 -32.74 14,171 -43.53 0.0216
2024-02-14 2023-12-31 13F UNDER ARMOUR-A COMMON STOCK 904311107 2,854,849 1,346,095 89.22 25,094 142.83 0.0425
2023-11-14 2023-09-30 13F UNDER ARMOUR-A COMMON STOCK 904311107 1,508,754 1,330,475 746.29 10,335 702.95 0.0209
2023-08-14 2023-06-30 13F UNDER ARMOUR-A COMMON STOCK 904311107 178,279 -230,993 -56.44 1,287 -66.86 0.0025
2023-05-15 2023-03-31 13F UNDER ARMOUR-A COMMON STOCK 904311107 409,272 -93,767 -18.64 3,884 -24.01 0.0083
2023-02-14 2022-12-31 13F UNDER ARMOUR-A COMMON STOCK 904311107 503,039 503,039 5,111 0.0115
2022-08-15 2022-06-30 13F UNDER ARMOUR-A COMMON STOCK 904311107 0 -426,729 -100.00 0 -100.00
2022-05-16 2022-03-31 13F UNDER ARMOUR-A COMMON STOCK 904311107 426,729 426,729 7,264 0.0138
2022-02-14 2021-12-31 13F UNDER ARMOUR-A COMMON STOCK 904311107 0 -757,297 -100.00 0 -100.00
2021-11-15 2021-09-30 13F UNDER ARMOUR-A COMMON STOCK 904311107 757,297 -29,368 -3.73 15,283 -8.14 0.0635
2021-08-13 2021-06-30 13F UNDER ARMOUR-A COMMON STOCK 904311107 786,665 135,384 20.79 16,637 15.27 0.0811
2021-05-17 2021-03-31 13F UNDER ARMOUR-A COMMON STOCK 904311107 651,281 453,715 229.65 14,433 325.50 0.0662
2021-02-16 2020-12-31 13F UNDER ARMOUR-A COMMON STOCK 904311107 197,566 -911,192 -82.18 3,392 -72.76 0.0184
2020-11-16 2020-09-30 13F UNDER ARMOUR-A COMMON STOCK 904311107 1,108,758 706,471 175.61 12,452 217.82 0.0797
2020-08-13 2020-06-30 13F UNDER ARMOUR-A COMMON STOCK 904311107 402,287 401,789 80,680.52 3,918 78,260.00 0.0274
2020-05-15 2020-03-31 13F UNDER ARMOUR-A COMMON STOCK 904311107 498 498 -99.88 5 -99.87 0.0000
2018-11-14 2018-09-30 13F UNDER ARMOUR-A COMMON STOCK 904311107 0 -107,053 -100.00 0 -100.00
2018-08-14 2018-06-30 13F UNDER ARMOUR-A COMMON STOCK 904311107 107,053 107,053 2,407 0.0360
2016-05-13 2016-03-31 13F UNDER ARMOUR-A COMMON STOCK 904311107 0 -10,886 -100.00 0 -100.00
2016-02-10 2015-12-31 13F UNDER ARMOUR-A COMMON STOCK 904311107 10,886 10,886 0.00 878 0.0082
2015-11-12 2015-09-30 13F UNDER ARMOUR-A COMMON STOCK 904311107 0 -8,553 -100.00 0 -100.00
2015-08-14 2015-06-30 13F UNDER ARMOUR-A COMMON STOCK 904311107 8,553 -21,120 -71.18 714 -70.20 0.0093
2015-05-11 2015-03-31 13F UNDER ARMOUR-A COMMON STOCK 904311107 29,673 22,717 326.58 2,396 407.63 0.0312
2015-02-17 2014-12-31 13F UNDER ARMOUR-A COMMON STOCK 904311107 6,956 6,956 472 0.0062
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-A EQUITY OPTION Call 200 1 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.