Boston Partners
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Boston Partners’s Under Armour UAA Stock Holding History

Boston Partners’s Portfolio UAA Stock Details UAA Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-323,264
Closed -$1.61M – 809
2025
Q3 		$1.61M Sell
323,264
-2,526,313
-89% -$14.7M ﹤0.01% 585
2025
Q2 		$19.4M Sell
2,849,577
-14,852
-0.5% -$92.5K 0.02% 359
2025
Q1 		$17.7M Buy
+2,864,429
New +$21.3M 0.02% 332

Other funds holding UAA

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BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return
Jane Street
Jane Street New York $777B AUM 61.18% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Boston Partners's UAA Position: Q4 2025 in Review

Boston Partners sold out of Under Armour (UAA) in Q4 2025, closing a stake of 323,264 shares — an estimated $1.61M sold.

Boston Partners first reported a position in UAA in Q1 2025 and held it in 3 quarters. The position peaked at $19.4M in Q2 2025. 352 funds tracked by Wall St. Rank hold UAA as of Q4 2025.

  • Boston Partners reported no remaining Under Armour position as of Q4 2025 after selling out during the quarter.
  • Boston Partners sold 323,264 Under Armour shares in Q4 2025, an estimated $1.61M.
  • Boston Partners first reported a position in Under Armour in Q1 2025 and held it in 3 quarters.
  • Boston Partners's Under Armour position peaked at $19.4M in Q2 2025.
  • 352 funds tracked by Wall St. Rank held Under Armour as of Q4 2025.

Based on Boston Partners's 13F filing for Q4 2025, filed 13 Feb 2026.