AMPH

Amphastar Pharmaceuticals Inc · NASDAQ NMS - GLOBAL MARKET · Pharmaceuticals

$20.40$-0.18 (-0.87%)

Prices delayed up to 5 minutes

AC Intelligence

AC Intelligence for AMPH is being prepared.

Key Stats

Open

$20.68

Day High

$21.07

Day Low

$20.18

Prev Close

$20.58

Volume

Avg Volume

434.9K

Day Change

$-0.18

Change %

-0.87%

Fundamentals

P/E

9.7

P/B

1.56

EPS (TTM)

$2.03

Market Cap

$926M

52-Wk Range

$17.03 — $31.26

What is P/E? →Stock fundamentals explained →

Earnings History

Insider Activity

Who Owns This Stock

Who Owns AMPH

Other30.0%162 holders

Passive / Index22.7%11 holders

Quality / Compounder7.4%15 holders

Deep Value6.1%1 holder

Dealer / Bank5.8%19 holders

Systematic / Quant5.7%8 holders

Income / Defensive1.4%15 holders

Tactical / Macro1.3%3 holders

Activist1.2%1 holder

Based on Q4 2025 13F filings + AC behavioral model

236 institutional holders

Top Holders

1.▲BlackRock, Inc.passive_index

$103478.7B

2.▼Vanguard Grouppassive_index

-1.2%$61941.2B

3.▲TD Asset Management Incother_unclassified

+1.6%$52570.5B

4.▲Dimensional Fund Advisorsquality_compounder

$46291.6B

5.★State Streetdealer_bank

$41021.2B

6.▲FULLER & THALER ASSET MANAGEMENT, INC.deep_value

+3.0%$37343.7B

7.▲FULLER & THALER ASSET MANAGEMENT, INC.deep_value

+3.0%$37343.7B

8.▼Epoch Investment Partners, Inc.other_unclassified

-0.7%$30169.9B

9.▲BlackRock, Inc.passive_index

$28913.0B

10.▲Marshall Wace LLPsystematic_quant

+17.6%$27182.3B

11.▼Geode Capital Managementpassive_index

-5.2%$20625.5B

12.★Boston Trust Walden Corpother_unclassified

$17899.9B

13.▲AMERICAN CENTURY COMPANIES INCquality_compounder

+130.6%$17817.7B

14.▲ARROWSTREET CAPITAL, LIMITED PARTNERSHIPsystematic_quant

+42.6%$14981.4B

15.★Third Pointactivist

$14691.6B

16.▼Renaissance Technologiessystematic_quant

-7.2%$14587.1B

17.★Invesco Ltdpassive_index

$12503.4B

18.▲Goldman Sachs AMdealer_bank

+173.2%$12466.0B

19.▲SYSTEMATIC FINANCIAL MANAGEMENT LPsystematic_quant

$11235.3B

20.★Boston Trust Walden Corpother_unclassified

$11217.1B

Institutional Pressure

Market Regime:Strong Risk-Off (-0.62)

SELLINGBUYING

▲

Mild Selling Pressure

Other(30.0%)

●

—

Passive / Index(22.7%)

●

Holds

Quality / Compounder(7.4%)

●

Holds through

Deep Value(6.1%)

●

Possible buyer

Dealer / Bank(5.8%)

●

Facilitating

Systematic / Quant(5.7%)

●

De-risking (mechanical)

Income / Defensive(1.4%)

●

Inflows (flight to yield)

Tactical / Macro(1.3%)

●

Reducing rapidly

Activist(1.2%)

●

May accumulate

Growth / Momentum(0.0%)

●

Likely trimming

30% passive + quality floor won't sell.

Updated daily · Based on Q4 2025 filings + AC behavioral model

Sentiment Signals

→Insider ActivityNo insider transactions in last 90 daysSEC Form 4

↑Analyst Consensus8 buy, 5 hold, 0 sellFinnhub

↑Inst. Flows215 increased/new, 111 decreased/exited (13F)AC 13F Analysis

Sources: SEC Form 4, Finnhub, AC 13F Analysis

On AcidCapitalist

No recent mentions of AMPH on AcidCapitalist.

Data provided by Finnhub. Prices delayed up to 5 minutes.