Under Armour
352 hedge funds and large institutions have $977M invested in Under Armour in 2025 Q4 according to their latest regulatory filings, with 65 funds opening new positions, 109 increasing their positions, 103 reducing their positions, and 70 closing their positions.
18% more capital invested
Capital invested by funds: $830M → $977M (+$147M)
16.01% more ownership
Funds ownership: 88.11% → 104.12% (+16%)
6% more repeat investments, than reductions
Existing positions increased: 109 | Existing positions reduced: 103
7% less first-time investments, than exits
New positions opened: 65 | Existing positions closed: 70
4% less funds holding
Funds holding: 366 → 352 (-14)
73% less call options, than puts
Call options by funds: $42M | Put options by funds: $156M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
FFH
Fairfax Financial Holdings
Toronto,
Ontario, Canada
|
+$165M |
| 2 |
BlackRock
New York
|
+$22.4M |
| 3 |
UBS Group
Zurich,
Switzerland
|
+$11.5M |
| 4 |
Jane Street
New York
|
+$11.2M |
| 5 |
Vanguard Group
Malvern,
Pennsylvania
|
+$8.09M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity International
Hamilton,
Bermuda
|
-$37.7M |
| 2 |
Loomis, Sayles & Company
Boston,
Massachusetts
|
-$21.2M |
| 3 |
Marshall Wace
London,
United Kingdom
|
-$17.1M |
| 4 |
American Century Companies
Kansas City,
Missouri
|
-$16.4M |
| 5 |
Dimensional Fund Advisors
Austin,
Texas
|
-$11M |
UAA Hedge Fund Activity: Q4 2025 in Review
352 of the 8,267 institutional investors tracked by Wall St. Rank reported a position in Under Armour (UAA) for Q4 2025, worth a combined $977M — up 18% from $830M a quarter earlier.
Sellers outnumbered buyers: 70 funds closed out of UAA and 65 opened new positions — a net loss of 5 holders — while 103 trimmed existing stakes and 109 added.
The largest buyer was Fairfax Financial Holdings, adding an estimated $165M. The largest seller was Fidelity International, exiting entirely with an estimated $37.7M sold.
- 352 institutional investors held Under Armour (UAA) as of Q4 2025, down from 366 in Q3 2025.
- Funds reported $977M of Under Armour stock for Q4 2025, up 18% quarter-over-quarter.
- 65 funds opened new Under Armour positions in Q4 2025 and 70 closed out, a net change of -5 holders.
- The largest Under Armour buyer in Q4 2025 was Fairfax Financial Holdings, an estimated $165M added.
- The largest Under Armour seller in Q4 2025 was Fidelity International, an estimated $37.7M sold.
Based on aggregated 13F filings for Q4 2025.