Back to AMPH
Boston Trust Walden Corp → AMPH
Boston Trust Walden Corp AMPH Position History
Amphastar Pharmaceuticals, Inc. • Healthcare
Quarters held
4
Latest value
$7.5M
Q1 2026
Peak value
$17.9M
First seen
Q4 2025
Dollar value over time
Show data table
| Period | Position value |
|---|---|
| Q4 2025 | $17.9M |
| Q4 2025 | $11.2M |
| Q1 2026 | $11M |
| Q1 2026 | $7.5M |
Quarter-by-quarter history
Every disclosed snapshot of the position
| Quarter | Value | Shares | % Portfolio | Change |
|---|---|---|---|---|
| Q1 2026 | $7.5M | 383.5K | — | — |
| Q1 2026 | $11M | 561.3K | — | — |
| Q4 2025 | $11.2M | 418.9K | — | — |
| Q4 2025 | $17.9M | 668.4K | — | — |
Other funds holding AMPH
$173.2M
$46.1M
$33.1M
$33.1M
$31.5M
$27.2M