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Richardson Financial Services’s Amphastar Pharmaceuticals AMPH Stock Holding History

Richardson Financial Services’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
-819
Closed -$21.9K – 618
2025
Q4 		$21.9K Buy
819
+208
+34% +$5.36K 0.01% 395
2025
Q3 		$16.3K Buy
+611
New +$15.8K 0.01% 399
2025
Q1 		– Sell
-246
Closed -$9.06K – 604
2024
Q4 		$9.06K Buy
246
+3
+1% +$137 0.01% 408
2024
Q3 		$9.72K Hold
243
– – 0.01% 400
2024
Q2 		$9.72K Buy
243
+136
+127% +$5.64K 0.01% 384
2024
Q1 		$4.7K Sell
107
-64
-37% -$3.31K ﹤0.01% 470
2023
Q4 		$10.6K Buy
+171
New +$8.98K 0.01% 305

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
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T 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 $100B AUM 35.1% 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

Richardson Financial Services's AMPH Position: Q1 2026 in Review

Richardson Financial Services sold out of Amphastar Pharmaceuticals (AMPH) in Q1 2026, closing a stake of 819 shares — an estimated $21.9K sold.

Richardson Financial Services first reported a position in AMPH in Q4 2023 and held it in 7 quarters. The position peaked at $21.9K in Q4 2025. 215 funds tracked by Wall St. Rank hold AMPH as of Q1 2026.

  • Richardson Financial Services reported no remaining Amphastar Pharmaceuticals position as of Q1 2026 after selling out during the quarter.
  • Richardson Financial Services sold 819 Amphastar Pharmaceuticals shares in Q1 2026, an estimated $21.9K.
  • Richardson Financial Services first reported a position in Amphastar Pharmaceuticals in Q4 2023 and held it in 7 quarters.
  • Richardson Financial Services's Amphastar Pharmaceuticals position peaked at $21.9K in Q4 2025.
  • 215 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q1 2026.

Based on Richardson Financial Services's 13F filing for Q1 2026, filed 4 May 2026.