安法斯塔製藥公司
US ˙ NasdaqGS ˙ US03209R1032

SecurityAMPH / Amphastar Pharmaceuticals, Inc.
InstitutionRoyce Value Trust Inc
Latest Disclosed Ownership28,568 shares
Latest Disclosed Value $ 655,921
Royce Value Trust Inc reports 51.83% increase in ownership of AMPH / Amphastar Pharmaceuticals, Inc.

On August 15, 2025 - Royce Value Trust Inc filed a NPORT-P form disclosing ownership of 28,568 shares of Amphastar Pharmaceuticals, Inc. (US:AMPH) valued at $655,921 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 19, 2025 disclosing 18,816 shares of Amphastar Pharmaceuticals, Inc.. This represents a change in shares of 51.83% during the quarter. The current value of the position is $563,932 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2025-08-15 2025-06-30 NP Amphastar Pharmaceuticals EC US03209R1032 28,568 9,752 51.83 656 20.18 0.0327
2025-05-19 2025-03-31 NP Amphastar Pharmaceuticals EC US03209R1032 18,816 12,186 183.80 545 121.54 0.0296
2025-02-21 2024-12-31 NP Amphastar Pharmaceuticals EC US03209R1032 6,630 0 0.00 246 -23.36 0.0123
2024-11-19 2024-09-30 NP Amphastar Pharmaceuticals EC US03209R1032 6,630 0 0.00 322 21.13 0.0159
2024-08-12 2024-06-30 NP Amphastar Pharmaceuticals EC US03209R1032 6,630 -5,053 -43.25 265 -34.73 0.0139
2022-08-16 2022-06-30 NP Amphastar Pharmaceuticals EC US03209R1032 11,683 -7,373 -38.69 406 -40.64 0.0257
2022-05-16 2022-03-31 NP Amphastar Pharmaceuticals EC US03209R1032 19,056 1,750 10.11 684 69.73 0.0357
2022-02-24 2021-12-31 NP Amphastar Pharmaceuticals EC US03209R1032 17,306 17,306 403 0.0187
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.