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Campbell & Co Investment Adviser’s Amphastar Pharmaceuticals AMPH Stock Holding History

Campbell & Co Investment Adviser’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 		$468K Buy
+23,211
New +$468K 0.02% 787
2026
Q1 		– Sell
-30,682
Closed -$822K – 1046
2025
Q4 		$822K Sell
30,682
-13,386
-30% -$345K 0.04% 638
2025
Q3 		$1.17M Buy
44,068
+21,635
+96% +$559K 0.09% 351
2025
Q2 		$515K Sell
22,433
-23,356
-51% -$580K 0.03% 772
2025
Q1 		$1.33M Sell
45,789
-1,777
-4% -$56.8K 0.1% 317
2024
Q4 		$1.77M Buy
+47,566
New +$2.18M 0.14% 214
2024
Q3 		– Sell
-8,668
Closed -$347K – 1074
2024
Q2 		$347K Sell
8,668
-5,124
-37% -$212K 0.03% 783
2024
Q1 		$606K Buy
+13,792
New +$712K 0.05% 617
2022
Q1 		– Sell
-14,800
Closed -$345K – 687
2021
Q4 		$345K Buy
14,800
+4,200
+40% +$85.9K 0.12% 307
2021
Q3 		$202K Buy
+10,600
New +$208K 0.07% 516
2021
Q2 		– Sell
-11,961
Closed -$219K – 512
2021
Q1 		$219K Sell
11,961
-3,666
-23% -$68.2K 0.13% 326
2020
Q4 		$314K Sell
15,627
-500
-3% -$9.73K 0.19% 215
2020
Q3 		$302K Sell
16,127
-3,000
-16% -$60.4K 0.22% 180
2020
Q2 		$430K Buy
+19,127
New +$350K 0.54% 37
2018
Q2 		– Sell
-23,341
Closed -$438K – 366
2018
Q1 		$438K Buy
+23,341
New +$439K 0.37% 77

Other funds holding AMPH

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
LSV Asset Management
LSV Asset Management Chicago, Illinois $55.1B AUM 45.38% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $204B AUM 27.99% 1-Year Est. Return
New York State Common Retirement Fund
New York State Common Retirement Fund Albany, New York $79.3B AUM 43.63% 1-Year Est. Return
Victory Capital Management
Victory Capital Management San Antonio, Texas $178B AUM 37.23% 1-Year Est. Return
Universal-Beteiligungs- und Servicegesellschaft
Universal-Beteiligungs- und Servicegesellschaft Frankfurt Am Main, Germany $65.4B AUM 39.83% 1-Year Est. Return
LG
LAM Group Lake Oswego, Oregon $201M AUM 22.35% 1-Year Est. Return
Nordea Investment Management
Nordea Investment Management Stockholm, Sweden $123B AUM 38.85% 1-Year Est. Return

Campbell & Co Investment Adviser's AMPH Position: Q2 2026 in Review

Campbell & Co Investment Adviser opened a new position in Amphastar Pharmaceuticals (AMPH) in Q2 2026: 23,211 shares worth $468K. The stake represents 0.02% of the portfolio and ranks #787 among its holdings. This is a return to the name: Campbell & Co Investment Adviser previously reported a position in AMPH as recently as Q4 2025.

Campbell & Co Investment Adviser first reported a position in AMPH in Q1 2018 and has held it in 15 quarters since. The position peaked at $1.77M in Q4 2024. 82 funds tracked by Wall St. Rank hold AMPH as of Q2 2026.

  • Campbell & Co Investment Adviser held 23,211 shares of Amphastar Pharmaceuticals worth $468K as of Q2 2026.
  • Amphastar Pharmaceuticals was a new Campbell & Co Investment Adviser position in Q2 2026.
  • Amphastar Pharmaceuticals made up 0.02% of Campbell & Co Investment Adviser's portfolio in Q2 2026, its #787 holding.
  • Campbell & Co Investment Adviser first reported a position in Amphastar Pharmaceuticals in Q1 2018 and has held it in 15 quarters since.
  • Campbell & Co Investment Adviser's Amphastar Pharmaceuticals position peaked at $1.77M in Q4 2024.
  • 82 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q2 2026.

Based on Campbell & Co Investment Adviser's 13F filing for Q2 2026, filed 3 Aug 2026.