Cartenna Capital’s ATI ATI Stock Holding History

Cartenna Capital’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	–	Sell	-260,000	Closed	-$29.8M	–	48
2025 Q4	$29.8M	Buy	+260,000	New	+$25.3M	0.99%	38
2025 Q1	–	Sell	-442,746	Closed	-$24.4M	–	42
2024 Q4	$24.4M	Buy	+442,746	New	+$26.1M	1.18%	28
2024 Q2	–	Sell	-600,000	Closed	-$30.7M	–	47
2024 Q1	$30.7M	Buy	600,000 +165,000	+38%	+$7.46M	1.68%	18
2023 Q4	$19.8M	Buy	435,000 +170,000	+64%	+$7.06M	1.22%	27
2023 Q3	$10.9M	Buy	+265,000	New	+$11.8M	1.11%	26

Other funds holding ATI

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

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 Los Angeles, California $427B AUM 29.17% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Viking Global Investors Stamford, Connecticut $35.7B AUM 21.3% 1-Year Est. Return

Cartenna Capital's ATI Position: Q1 2026 in Review

Cartenna Capital sold out of ATI (ATI) in Q1 2026, closing a stake of 260,000 shares — an estimated $29.8M sold.

Cartenna Capital first reported a position in ATI in Q3 2023 and held it in 5 quarters. The position peaked at $30.7M in Q1 2024. 673 funds tracked by Wall St. Rank hold ATI as of Q1 2026.

Cartenna Capital reported no remaining ATI position as of Q1 2026 after selling out during the quarter.
Cartenna Capital sold 260,000 ATI shares in Q1 2026, an estimated $29.8M.
Cartenna Capital first reported a position in ATI in Q3 2023 and held it in 5 quarters.
Cartenna Capital's ATI position peaked at $30.7M in Q1 2024.
673 funds tracked by Wall St. Rank held ATI as of Q1 2026.

Based on Cartenna Capital's 13F filing for Q1 2026, filed 15 May 2026.