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Cynosure Group’s Amphastar Pharmaceuticals AMPH Stock Holding History

Cynosure Group’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
2025
Q4 		– Sell
-17,820
Closed -$475K – 405
2025
Q3 		$475K Hold
17,820
– – 0.05% 215
2025
Q2 		$409K Buy
17,820
+5,419
+44% +$134K 0.05% 267
2025
Q1 		$360K Buy
12,401
+4,783
+63% +$153K 0.05% 202
2024
Q4 		$283K Buy
7,618
+192
+3% +$8.78K 0.04% 320
2024
Q3 		$360K Sell
7,426
-1,850
-20% -$81.2K 0.05% 323
2024
Q2 		$371K Buy
9,276
+2,022
+28% +$83.8K 0.06% 284
2024
Q1 		$319K Buy
+7,254
New +$375K 0.06% 249

Other funds holding AMPH

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
TD Asset Management
TD Asset Management Toronto, Ontario, Canada $123B AUM 34.51% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $29.7B AUM 43.33% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return
EIP
Epoch Investment Partners New York $16.5B AUM 24.3% 1-Year Est. Return
BTW
Boston Trust Walden Boston, Massachusetts $13.1B AUM 24.63% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Cynosure Group's AMPH Position: Q4 2025 in Review

Cynosure Group sold out of Amphastar Pharmaceuticals (AMPH) in Q4 2025, closing a stake of 17,820 shares — an estimated $475K sold.

Cynosure Group first reported a position in AMPH in Q1 2024 and held it in 7 quarters. The position peaked at $475K in Q3 2025. 235 funds tracked by Wall St. Rank hold AMPH as of Q4 2025.

  • Cynosure Group reported no remaining Amphastar Pharmaceuticals position as of Q4 2025 after selling out during the quarter.
  • Cynosure Group sold 17,820 Amphastar Pharmaceuticals shares in Q4 2025, an estimated $475K.
  • Cynosure Group first reported a position in Amphastar Pharmaceuticals in Q1 2024 and held it in 7 quarters.
  • Cynosure Group's Amphastar Pharmaceuticals position peaked at $475K in Q3 2025.
  • 235 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q4 2025.

Based on Cynosure Group's 13F filing for Q4 2025, filed 17 Feb 2026.