Vanguard Personalized Indexing Management
AMPH icon

Vanguard Personalized Indexing Management’s Amphastar Pharmaceuticals AMPH Stock Holding History

Vanguard Personalized Indexing 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 		– Sell
-10,290
Closed -$202K – 2248
2026
Q1 		$202K Sell
10,290
-172
-2% -$4.21K ﹤0.01% 1828
2025
Q4 		$280K Sell
10,462
-542
-5% -$14K ﹤0.01% 1558
2025
Q3 		$293K Sell
11,004
-1,620
-13% -$41.8K ﹤0.01% 1515
2025
Q2 		$290K Buy
12,624
+4,855
+62% +$120K ﹤0.01% 1461
2025
Q1 		$225K Buy
+7,769
New +$248K ﹤0.01% 1466

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

Vanguard Personalized Indexing Management's AMPH Position: Q2 2026 in Review

Vanguard Personalized Indexing Management sold out of Amphastar Pharmaceuticals (AMPH) in Q2 2026, closing a stake of 10,290 shares — an estimated $202K sold.

Vanguard Personalized Indexing Management first reported a position in AMPH in Q1 2025 and held it in 5 quarters. The position peaked at $293K in Q3 2025. 212 funds tracked by Wall St. Rank hold AMPH as of Q2 2026.

  • Vanguard Personalized Indexing Management reported no remaining Amphastar Pharmaceuticals position as of Q2 2026 after selling out during the quarter.
  • Vanguard Personalized Indexing Management sold 10,290 Amphastar Pharmaceuticals shares in Q2 2026, an estimated $202K.
  • Vanguard Personalized Indexing Management first reported a position in Amphastar Pharmaceuticals in Q1 2025 and held it in 5 quarters.
  • Vanguard Personalized Indexing Management's Amphastar Pharmaceuticals position peaked at $293K in Q3 2025.
  • 212 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q2 2026.

Based on Vanguard Personalized Indexing Management's 13F filing for Q2 2026, filed 11 Aug 2026.