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Legato Capital Management’s Amphastar Pharmaceuticals AMPH Stock Holding History

Legato 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 		$689K Hold
34,135
– – 0.06% 457
2026
Q1 		$669K Buy
34,135
+7,545
+28% +$185K 0.06% 430
2025
Q4 		$712K Sell
26,590
-9,470
-26% -$244K 0.06% 448
2025
Q3 		$961K Hold
36,060
– – 0.1% 301
2025
Q2 		$828K Buy
36,060
+6,361
+21% +$158K 0.1% 321
2025
Q1 		$861K Buy
29,699
+11,238
+61% +$359K 0.12% 290
2024
Q4 		$685K Hold
18,461
– – 0.09% 388
2024
Q3 		$896K Buy
18,461
+3,651
+25% +$160K 0.11% 327
2024
Q2 		$592K Buy
14,810
+4,303
+41% +$178K 0.08% 394
2024
Q1 		$461K Sell
10,507
-4,710
-31% -$243K 0.06% 454
2023
Q4 		$941K Buy
15,217
+7,431
+95% +$390K 0.12% 283
2023
Q3 		$358K Sell
7,786
-305
-4% -$16.6K 0.05% 465
2023
Q2 		$465K Buy
+8,091
New +$359K 0.06% 437

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

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

Legato Capital Management held its Amphastar Pharmaceuticals (AMPH) position steady in Q2 2026 at 34,135 shares worth $689K. The position accounts for 0.06% of the portfolio, ranked #457.

Legato Capital Management first reported a position in AMPH in Q2 2023 and has held it in 13 quarters since. The position peaked at $961K in Q3 2025. 211 funds tracked by Wall St. Rank hold AMPH as of Q2 2026.

  • Legato Capital Management held 34,135 shares of Amphastar Pharmaceuticals worth $689K as of Q2 2026.
  • Legato Capital Management left its Amphastar Pharmaceuticals share count unchanged in Q2 2026.
  • Amphastar Pharmaceuticals made up 0.06% of Legato Capital Management's portfolio in Q2 2026, its #457 holding.
  • Legato Capital Management first reported a position in Amphastar Pharmaceuticals in Q2 2023 and has held it in 13 quarters since.
  • Legato Capital Management's Amphastar Pharmaceuticals position peaked at $961K in Q3 2025.
  • 211 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q2 2026.

Based on Legato Capital Management's 13F filing for Q2 2026, filed 6 Aug 2026.