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Thompson Siegel & Walmsley’s Atkore ATKR Stock Holding History

Thompson Siegel & Walmsley’s Portfolio ATKR Stock Details ATKR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-65,458
Closed -$4.14M – 424
2025
Q4 		$4.14M Sell
65,458
-78,894
-55% -$5.15M 0.07% 238
2025
Q3 		$9.06M Buy
144,352
+8,423
+6% +$549K 0.15% 142
2025
Q2 		$9.59M Sell
135,929
-16,546
-11% -$1.07M 0.16% 136
2025
Q1 		$9.15M Buy
152,475
+89,191
+141% +$6.37M 0.15% 133
2024
Q4 		$5.28M Buy
+63,284
New +$5.58M 0.08% 197

Other funds holding ATKR

GCM
Gates Capital Management New York $4.16B AUM 21% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
First Trust Advisors
First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return
LSV Asset Management
LSV Asset Management Chicago, Illinois $55.1B AUM 45.38% 1-Year Est. Return
CCM
Coliseum Capital Management Rowayton, Connecticut $1.16B AUM 23.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Thompson Siegel & Walmsley's ATKR Position: Q1 2026 in Review

Thompson Siegel & Walmsley sold out of Atkore (ATKR) in Q1 2026, closing a stake of 65,458 shares — an estimated $4.14M sold.

Thompson Siegel & Walmsley first reported a position in ATKR in Q4 2024 and held it in 5 quarters. The position peaked at $9.59M in Q2 2025. 303 funds tracked by Wall St. Rank hold ATKR as of Q1 2026.

  • Thompson Siegel & Walmsley reported no remaining Atkore position as of Q1 2026 after selling out during the quarter.
  • Thompson Siegel & Walmsley sold 65,458 Atkore shares in Q1 2026, an estimated $4.14M.
  • Thompson Siegel & Walmsley first reported a position in Atkore in Q4 2024 and held it in 5 quarters.
  • Thompson Siegel & Walmsley's Atkore position peaked at $9.59M in Q2 2025.
  • 303 funds tracked by Wall St. Rank held Atkore as of Q1 2026.

Based on Thompson Siegel & Walmsley's 13F filing for Q1 2026, filed 11 May 2026.