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Marathon Partners Equity Management’s ATI ATI Stock Holding History

Marathon Partners Equity Management’s Portfolio ATI Stock Details ATI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$2.55M Sell
17,500
-2,500
-13% -$348K 2.88% 9
2025
Q4 		$2.3M Sell
20,000
-7,500
-27% -$731K 2.28% 11
2025
Q3 		$2.24M Buy
+27,500
New +$2.23M 1.61% 13

Other funds holding ATI

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Capital International Investors
Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Viking Global Investors
Viking Global Investors Stamford, Connecticut $35.7B AUM 21.3% 1-Year Est. Return

Marathon Partners Equity Management's ATI Position: Q1 2026 in Review

Marathon Partners Equity Management reduced its ATI (ATI) stake by 13% in Q1 2026, selling an estimated $348K and leaving 17,500 shares worth $2.55M. The position accounts for 2.88% of the portfolio, ranked #9.

Marathon Partners Equity Management first reported a position in ATI in Q3 2025 and has held it in 3 quarters since. 673 funds tracked by Wall St. Rank hold ATI as of Q1 2026.

  • Marathon Partners Equity Management held 17,500 shares of ATI worth $2.55M as of Q1 2026.
  • Marathon Partners Equity Management sold 2,500 ATI shares in Q1 2026, an estimated $348K.
  • ATI made up 2.88% of Marathon Partners Equity Management's portfolio in Q1 2026, its #9 holding.
  • Marathon Partners Equity Management first reported a position in ATI in Q3 2025 and has held it in 3 quarters since.
  • 673 funds tracked by Wall St. Rank held ATI as of Q1 2026.

Based on Marathon Partners Equity Management's 13F filing for Q1 2026, filed 15 May 2026.