Rockefeller Capital Management
AMPH icon

Rockefeller Capital Management’s Amphastar Pharmaceuticals AMPH Stock Holding History

Rockefeller Capital 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
Q2 		$141 Sell
7
-117
-94% -$2.36K ﹤0.01% 4676
2026
Q1 		$2.43K Buy
124
+24
+24% +$587 ﹤0.01% 4377
2025
Q4 		$2.68K Sell
100
-323
-76% -$8.32K ﹤0.01% 4245
2025
Q3 		$11.3K Buy
+423
New +$10.9K ﹤0.01% 3595
2023
Q1 		– Sell
-14
Closed – – 2048
2022
Q4 		$0 Hold
14
– – ﹤0.01% 3825
2022
Q3 		$0 Sell
14
-47
-77% -$1.53K ﹤0.01% 3854
2022
Q2 		$2K Buy
+61
New +$2.18K ﹤0.01% 3742
2022
Q1 		– Sell
-9
Closed – – 3849
2021
Q4 		$0 Buy
+9
New +$184 ﹤0.01% 3747

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
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Rockefeller Capital Management's AMPH Position: Q2 2026 in Review

Rockefeller Capital Management reduced its Amphastar Pharmaceuticals (AMPH) stake by 94% in Q2 2026, selling an estimated $2.36K and leaving 7 shares worth $141. The position accounts for ﹤0.01% of the portfolio, ranked #4676.

Rockefeller Capital Management first reported a position in AMPH in Q4 2021 and has held it in 8 quarters since. The position peaked at $11.3K in Q3 2025. 210 funds tracked by Wall St. Rank hold AMPH as of Q2 2026.

  • Rockefeller Capital Management held 7 shares of Amphastar Pharmaceuticals worth $141 as of Q2 2026.
  • Rockefeller Capital Management sold 117 Amphastar Pharmaceuticals shares in Q2 2026, an estimated $2.36K.
  • Amphastar Pharmaceuticals made up ﹤0.01% of Rockefeller Capital Management's portfolio in Q2 2026, its #4676 holding.
  • Rockefeller Capital Management first reported a position in Amphastar Pharmaceuticals in Q4 2021 and has held it in 8 quarters since.
  • Rockefeller Capital Management's Amphastar Pharmaceuticals position peaked at $11.3K in Q3 2025.
  • 210 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q2 2026.

Based on Rockefeller Capital Management's 13F filing for Q2 2026, filed 13 Aug 2026.