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Driehaus Capital Management’s ATI ATI Stock Holding History

Driehaus Capital 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 		$30.9M Sell
212,734
-377
-0.2% -$52.5K 0.23% 144
2025
Q4 		$24.5M Buy
+213,111
New +$20.8M 0.17% 176
2024
Q4 		– Sell
-816,690
Closed -$54.6M – 390
2024
Q3 		$54.6M Buy
816,690
+295,572
+57% +$18.4M 0.47% 67
2024
Q2 		$28.9M Buy
+521,118
New +$29.2M 0.28% 104
2024
Q1 		– Sell
-1,548,353
Closed -$70.4M – 392
2023
Q4 		$70.4M Sell
1,548,353
-618,451
-29% -$25.7M 0.85% 22
2023
Q3 		$89.2M Buy
2,166,804
+4,793
+0.2% +$213K 1.16% 10
2023
Q2 		$95.6M Sell
2,162,011
-3,204
-0.1% -$123K 1.21% 10
2023
Q1 		$85.4M Buy
2,165,215
+93,321
+5% +$3.52M 1.2% 5
2022
Q4 		$61.9M Sell
2,071,894
-194,595
-9% -$5.7M 0.92% 14
2022
Q3 		$60.3M Sell
2,266,489
-110,705
-5% -$3.08M 0.91% 19
2022
Q2 		$54M Buy
2,377,194
+469,487
+25% +$12.4M 0.87% 18
2022
Q1 		$51.2M Buy
+1,907,707
New +$44.2M 0.63% 33
2019
Q1 		– Sell
-73,547
Closed -$1.6M – 403
2018
Q4 		$1.6M Buy
73,547
+567
+0.8% +$14.7K 0.07% 243
2018
Q3 		$2.16M Buy
+72,980
New +$1.96M 0.07% 277
2014
Q1 		– Sell
-12,777
Closed -$455K – 510
2013
Q4 		$455K Buy
+12,777
New +$420K 0.02% 426

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

Driehaus Capital Management's ATI Position: Q1 2026 in Review

Driehaus Capital Management reduced its ATI (ATI) stake by 0.18% in Q1 2026, selling an estimated $52.5K and leaving 212,734 shares worth $30.9M. The position accounts for 0.23% of the portfolio, ranked #144.

Driehaus Capital Management first reported a position in ATI in Q4 2013 and has held it in 15 quarters since. The position peaked at $95.6M in Q2 2023. 673 funds tracked by Wall St. Rank hold ATI as of Q1 2026.

  • Driehaus Capital Management held 212,734 shares of ATI worth $30.9M as of Q1 2026.
  • Driehaus Capital Management sold 377 ATI shares in Q1 2026, an estimated $52.5K.
  • ATI made up 0.23% of Driehaus Capital Management's portfolio in Q1 2026, its #144 holding.
  • Driehaus Capital Management first reported a position in ATI in Q4 2013 and has held it in 15 quarters since.
  • Driehaus Capital Management's ATI position peaked at $95.6M in Q2 2023.
  • 673 funds tracked by Wall St. Rank held ATI as of Q1 2026.

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