Kayne Anderson Rudnick Investment Management
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Kayne Anderson Rudnick Investment Management’s Amphastar Pharmaceuticals AMPH Stock Holding History

Kayne Anderson Rudnick Investment Management’s Portfolio AMPH Stock Details AMPH Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-15
Closed -$402 – 958
2025
Q4 		$402 Hold
15
– – ﹤0.01% 950
2025
Q3 		$400 Hold
15
– – ﹤0.01% 965
2025
Q2 		$344 Hold
15
– – ﹤0.01% 1022
2025
Q1 		$435 Hold
15
– – ﹤0.01% 913
2024
Q4 		$557 Hold
15
– – ﹤0.01% 930
2024
Q3 		$728 Hold
15
– – ﹤0.01% 907
2024
Q2 		$600 Hold
15
– – ﹤0.01% 900
2024
Q1 		$659 Buy
+15
New +$775 ﹤0.01% 887

Other funds holding AMPH

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
TD Asset Management
TD Asset Management Toronto, Ontario, Canada $115B AUM 41.58% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
BTW
Boston Trust Walden Boston, Massachusetts $13.1B AUM 24.63% 1-Year Est. Return

Kayne Anderson Rudnick Investment Management's AMPH Position: Q1 2026 in Review

Kayne Anderson Rudnick Investment Management sold out of Amphastar Pharmaceuticals (AMPH) in Q1 2026, closing a stake of 15 shares — an estimated $402 sold.

Kayne Anderson Rudnick Investment Management first reported a position in AMPH in Q1 2024 and held it in 8 quarters. The position peaked at $728 in Q3 2024. 215 funds tracked by Wall St. Rank hold AMPH as of Q1 2026.

  • Kayne Anderson Rudnick Investment Management reported no remaining Amphastar Pharmaceuticals position as of Q1 2026 after selling out during the quarter.
  • Kayne Anderson Rudnick Investment Management sold 15 Amphastar Pharmaceuticals shares in Q1 2026, an estimated $402.
  • Kayne Anderson Rudnick Investment Management first reported a position in Amphastar Pharmaceuticals in Q1 2024 and held it in 8 quarters.
  • Kayne Anderson Rudnick Investment Management's Amphastar Pharmaceuticals position peaked at $728 in Q3 2024.
  • 215 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q1 2026.

Based on Kayne Anderson Rudnick Investment Management's 13F filing for Q1 2026, filed 14 May 2026.