Security key
03209R103
Amphastar Pharmaceuticals, Inc. - Common Stock (AMPH)
CUSIP: 03209R103
Q4 2018 13F Holders as of 31 Dec 2018
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 22,224,435
- Total 13F value
- $442,228,625
- Share change
- +1,576,663
- SEC-reported price per share
- $19.90
- Number of holders
- 129
- Value change
- +$31,389,222
- Number of buys
- 71
- Number of sells
- 39
- Shares outstanding
- 46,377,939
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2018
Institutions
129
Top holders
10
AMPH full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2019
Previous quarter: Q3 2018
Amphastar Pharmaceuticals, Inc. SEC filings
Amphastar Pharmaceuticals, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 03209R103
Recent filing periods:
Ownership snapshot
Top reported holders of AMPH - Amphastar Pharmaceuticals, Inc. - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock Finance, Inc.
Disclosed value leader
BlackRock Finance, Inc.
Comparable rows
15/15
Latest evidence
30 Sep 2018
13F
Lead comparable stake: 13%
Showing 1-6 of 15 holder rows.
Quick read
BlackRock Finance, Inc. leads the comparable SEC ownership view at 13%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock Finance, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock Finance, Inc.
13%
VANGUARD GROUP INC
4.8%
DIMENSIONAL FUND ADVISORS LP
4.1%
FEDERATED HERMES, INC.
2.8%
STATE STREET CORP
2.3%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock Finance, Inc. |
13F
Company
|
13%
|
$115,205,000
5,987,805 shares
|
— | 30 Sep 2018 |
| VANGUARD GROUP INC |
13F
Company
|
4.8%
|
$43,162,000
2,243,393 shares
|
— | 30 Sep 2018 |
| DIMENSIONAL FUND ADVISORS LP |
13F
Company
|
4.1%
|
$36,746,000
1,909,883 shares
|
— | 30 Sep 2018 |
| FEDERATED HERMES, INC. |
13F
Company
|
2.8%
|
$24,560,000
1,276,508 shares
|
— | 30 Sep 2018 |
| STATE STREET CORP |
13F
Company
|
2.3%
|
$20,189,000
1,049,056 shares
|
— | 30 Sep 2018 |
| TEACHERS ADVISORS, LLC |
13F
Company
|
1.2%
|
$10,909,000
566,984 shares
|
— | 30 Sep 2018 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2018
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
129
Shares
22,224,435
Rows available
129
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2018 vs Q3 2018 Across Filers
Q3 2018 holders
104
Q4 2018 holders
129
Holder diff
25
| Investor | Q3 2018 Shares | Q4 2018 Shares | Share Diff | Share Chg % | Q3 2018 value | Q4 2018 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend