AMPH

Amphastar Pharmaceuticals, Inc.
NasdaqGSUSDEQUITY Healthcare DELAYED
Last price
25.91
▲ 0.54 (2.13%)
MARKET · —

Price

1D — H — L — Range — Vol —
Drag pan · Pinch zoom · Hold crosshair · pick a tool then drag to draw
Open
25.55
Prev close
25.37
Day high
26.08
Day low
25.03
Volume
469.14K
Market cap
$1.10B
P/E (TTM)
15.33
52W range
16.65 – 29.52

Day trading desk

Current session · delayed
Gap from prior close
+0.71%
Prior close 25.37
VWAP
25.80
+0.43% from price
Relative volume
1.69×
Unusually busy
Session range
13.39%
23.00 – 26.08
Position in range
94%
Near session high
ATR (14D)
1.02
3.95% of price
Prior day high
25.70
PDH
Prior day low
25.17
PDL
Bid / ask spread
—
Quote not published
Session volume
789.08K
Avg 467.31K

VWAP and the session figures are computed from the delayed intraday series on this page, so they lag the live tape and will not match a broker's real-time VWAP exactly. Turn on Prior day H/L/C, Opening range and Volume profile in the chart's Studies menu to see these levels drawn on price.

Trailing performance

Price return · vs SPY
Returnvs SPY
1W
-2.89% -4.8%
1M
+11.78% +10.6%
3M
+37.24% +32.7%
6M
+25.90% +7.7%
YTD
-3.25% -17.5%
1Y
-3.14% -19.6%
3Y
-43.66% -125.9%
5Y
— —

Price return only. Dividends are not reinvested, so total return on a dividend payer will be higher than shown.

Unusual options activity

Account required
Nothing crossed the thresholds in the expiries we scanned.
That is the normal state — most contracts trade well inside their existing open interest.
Free account required

Contracts trading at or above their open interest, ranked by notional and where the print landed.

Free account

5 more panels on AMPH open with an account.

Options chains and analytics, valuation ratios, insider filings, analyst targets and ownership. No card, no trial, nothing to cancel.

Insider net activity

6m · Form 4 rollup
Net shares
+39.82K
Net buying
Buy transactions
10
73.30K shares
Sell transactions
5
33.48K shares
Net transactions
+15
Buys less sells
Sell : buy shares
0.5 : 1
Mixed
Insider-held shares
13.11M
Total on file
Bought 73.30KSold 33.48K

Insider transactions

Account required
DateInsiderAction SharesValueHeld
Sep 21, 26
PETERS WILLIAM J
Chief Financial Officer
SELL 4.14K $103.47K Direct
Sep 16, 26
ZHOU RONG
Officer
CONVERSION 10.00K $133.50K Direct
Sep 16, 26
ZHOU RONG
Officer
SELL 10.00K $239.40K Direct
Sep 2, 26
ZHOU RONG
Officer
SELL 3.19K $75.31K Direct
Aug 11, 26
PRINS RICHARD K
Director
SELL 7.97K $161.85K Direct
Aug 7, 26
PETERS WILLIAM J
Chief Financial Officer
CONVERSION 5.05K $100.00K Direct
Aug 7, 26
PETERS WILLIAM J
Chief Financial Officer
SELL 8.18K $183.89K Direct
Jul 9, 26
PIERCE ANTHONY T
Director
STOCK 7.89K $0 Direct
Jun 1, 26
ZASLOFF MICHAEL A
Director
STOCK 8.14K $0 Direct
Jun 1, 26
PRINS RICHARD K
Director
STOCK 8.14K $0 Direct
Jun 1, 26
LEE HOWARD S
Director
STOCK 8.14K $0 Direct
Jun 1, 26
GERST DIANE G.
Director
STOCK 8.14K $0 Direct
Jun 1, 26
DEFLIN GAYLE
Director
STOCK 8.14K $0 Direct
Jun 1, 26
GAUGH DAVID RUSSELL
Director
STOCK 8.14K $0 Direct
What this is, and what it is not

These are SEC Form 4 filings — officers, directors and 10% owners reporting their own trades in the company's stock. Filing is due within two business days of the transaction, so this lags reality by days, and the provider adds its own lag on top.

A sale is not automatically bearish. Executives sell on scheduled 10b5-1 plans, to cover tax on vesting equity, and to diversify. Purchases with cash are generally the more informative signal, and they are far rarer.

This does not include congressional or senate trading. That comes from STOCK Act disclosures filed with the Senate eFD system and the House Clerk, which this data source does not carry.

Free account required

Officer and director trades in their own stock, straight from Form 4 filings.

Insider holders

10 reporting
NameRelationShares heldLatest
DEFLIN GAYLE
Director 19.06K Stock Award(Grant)
GERST DIANE G.
Director 31.90K Stock Award(Grant)
LEE HOWARD S
Director 159.35K Stock Award(Grant)
LIAWATIDEWI YAKOB
Officer and Director 125.38K Stock Award(Grant)
PETERS WILLIAM J
Chief Financial Officer 168.71K Sale
PETERSEN FLOYD F
Director 71.37K Sale
PRINS RICHARD K
Director 29.63K Sale
ZASLOFF MICHAEL A
Director 37.67K Stock Award(Grant)
ZHANG JACK YONGFENG
Chief Executive Officer — Stock Award(Grant)
ZHOU RONG
Officer 273.87K Conversion of Exercise of derivative security

Fundamentals

TTM · reported
Market cap$1.10B
Enterprise value$1.50B
Revenue (TTM)$730.02M
Gross profit$348.11M
EBITDA$194.51M
Net income$78.55M
EPS (TTM)$1.69
Free cash flow$230.10M
Total cash$290.12M
Total debt$688.32M
Book value / share$18.06
Shares outstanding42.54M
Float31.29M
Short % of float25.59%
Dividend yield0.00%
Beta (5Y)0.90

Valuation & profitability ratios

Account required
Trailing P/E15.33
Forward P/E8.14
PEG ratio—
Price / sales—
Price / book1.43
EV / revenue2.06
EV / EBITDA7.71
Gross margin47.69%
Operating margin21.60%
Profit margin10.76%
Return on equity10.30%
Return on assets5.11%
Debt / equity89.61
Current ratio2.40
Free account required

Fourteen ratios including P/E, PEG, EV/EBITDA, margins and return on equity.

Financial statements

As reported · 4 years · 5 quarters
Blank means not reported, not zero
Line item2025202420232022YoY
Total revenue $719.89M$731.97M$644.39M$498.99M -1.7%
Operating revenue $719.89M$712.81M$593.24M$498.99M +1.0%
Cost of revenue $363.83M$358.11M$293.27M$250.13M +1.6%
Gross profit $356.06M$373.86M$351.12M$248.86M -4.8%
Research & development $85.84M$73.91M$73.74M$74.77M +16.1%
Selling, general & admin $129.81M$94.52M$80.39M$66.59M +37.3%
Total operating expense $215.65M$168.44M$154.13M$141.36M +28.0%
Operating income $140.40M$205.42M$196.99M$107.50M -31.7%
Net interest income -$16.80M-$19.73M-$21.70M-$525.00K +14.8%
Pre-tax income $123.62M$189.76M$171.36M$116.04M -34.9%
Tax provision $25.53M$29.67M$31.83M$23.48M -14.0%
Net income $98.09M$159.52M$137.54M$91.39M -38.5%
Net income to common $98.09M$159.52M$137.54M$91.39M -38.5%
Basic EPS 2.103.292.851.88 -36.2%
Diluted EPS 2.033.062.601.74 -33.7%
EBIT $149.10M$220.11M$198.52M$117.89M -32.3%
EBITDA $212.31M$277.31M$240.29M$146.16M -23.4%
Basic shares 46.74M48.43M48.27M48.55M -3.5%
Diluted shares 48.22M52.06M53.00M52.43M -7.4%

Options analytics

Account required
Put / call volume
0.02
Call-heavy session
Put / call open interest
—
Positioning, not flow
Max pain
17.50
-32.5% from spot
ATM implied vol
0.0%
Nearest strike to spot
Skew (10% OTM)
0.0%
Calls bid over puts
Call volume
49
Contracts, this expiry
Put volume
1
Contracts, this expiry
Heaviest call OI
20.00
0 contracts
Heaviest put OI
17.50
0 contracts

Max pain is the strike at which the largest dollar value of open contracts expires worthless. It describes current positioning; it is not a forecast and it moves as open interest changes.

Free account required

Put/call ratios, max pain, implied volatility skew and where open interest is concentrated.

Earnings

History & consensus estimates
Reported vs expected · EPS
QuarterEst.ActualSurprise
Jun 2026 0.610.91 +48.3%
Mar 2026 0.710.42 -40.5%
Dec 2025 0.920.73 -20.5%
Sep 2025 0.830.93 +12.7%
Forward consensus
PeriodEPSAnalystsRevenueGrowth
Current quarter 0.86 7 $197.84M +3.2%
Next quarter 0.69 1 $194.77M +6.4%
Current year 2.97 7 $747.75M +3.9%
Next year 2.64 1 $784.41M +4.9%

Analyst targets & ownership

Account required
Mean target$22.50
High target$30.00
Low target$20.00
Implied upside-13.16%
Analyst count6
ConsensusNONE
Strong buy / Buy0 / 0
Hold6
Sell / Strong sell0 / 1
Held by insiders30.81%
Held by institutions68.50%
Institutions holding303
Free account required

Price targets, consensus spread, insider and institutional ownership.

Moving averages & technicals

Computed from 2Y daily closes
SMA 10
25.93
-0.08% from price
SMA 20
24.87
+4.18% from price
SMA 50
22.74
+13.94% from price
SMA 100
21.00
+23.40% from price
SMA 200
22.35
+15.93% from price
EMA 12
25.44
+1.86% from price
EMA 26
24.51
+5.72% from price
EMA 50
23.29
+11.24% from price
RSI (14)
62.5
Neutral
MACD (12,26,9)
0.93
Hist -0.08
ATR (14)
1.02
3.95% of price
Realised vol 30D
32.7%
Annualised
Bollinger upper
27.26
20, 2σ
Bollinger lower
22.48
20, 2σ
50 / 200 cross
Golden
22.74 vs 22.35
Trend bias
Above 200
+15.93%

Options chain

Account required
Expiry
Spot 25.91
Calls
StrikeLastBidAskVolOIIV
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
Puts
StrikeLastBidAskVolOIIV
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
000.000.000.000.00000.0%
Free account required

Every listed expiry, both sides of the book, with volume, open interest and implied volatility.

Risk profile

Daily returns · 1Y window
Beta vs SPY
0.57
Less volatile than market
Correlation to SPY
0.14
Largely independent
Realised vol 30D
32.7%
Annualised
Market vol 1Y
13.0%
SPY, annualised
Max drawdown 1Y
-42.6%
Peak to trough
Max drawdown 5Y
-74.0%
Peak to trough
ATR 14
1.02
3.95% of price
Beta (reported)
0.90
5Y monthly, from filing

Short interest

Semi-monthly exchange report · lags by ~2 weeks
Shares short
4.99M
Prior 5.39M
Change vs prior
-7.3%
Shorts covering
% of float
25.59%
Heavily shorted
% of shares out
11.74%
Against total outstanding
Days to cover
12.5
Crowded exit
Float
31.29M
Freely tradeable shares

Exchanges publish short interest twice a month with a settlement lag, so this is roughly two weeks behind. Days to cover divides shares short by average daily volume — it estimates how long covering would take, not whether it will happen.

Rating changes

60 on file
DateFirm ActionFromTo
Aug 18, 26 Barclays MAINTAINED Equal-Weight Equal-Weight
Aug 7, 26 Piper Sandler MAINTAINED Neutral Neutral
Aug 7, 26 Wells Fargo MAINTAINED Equal-Weight Equal-Weight
Jun 29, 26 B of A Securities DOWNGRADE Neutral Underperform
Jun 3, 26 Barclays MAINTAINED Equal-Weight Equal-Weight
May 14, 26 Wells Fargo DOWNGRADE Overweight Equal-Weight
May 11, 26 Piper Sandler MAINTAINED Neutral Neutral
May 8, 26 Needham DOWNGRADE Buy Hold
Apr 21, 26 Jefferies DOWNGRADE Buy Hold
Apr 8, 26 Barclays MAINTAINED Equal-Weight Equal-Weight
Feb 27, 26 Wells Fargo MAINTAINED Overweight Overweight
Feb 27, 26 Needham MAINTAINED Buy Buy

Dividends & splits

Declared · from the issuer
Forward rate—
Forward yield0.00%
5-year avg yield—
Payout ratio0.00%
Ex-dividend date—
Next pay date—
Last split—
Split date—

PRIVATE STRATEGY · BY QUALIFICATION

The same data. A different seat.

The research you are reading is the input layer for a discretionary options program we run for a small number of qualified investors. Minimum $1,000,000.