Is AMPH or SNY the better stock?

"Better" depends on your goal, and these two are not alike. SNY is the larger company by market cap ($97.18B vs $1.10B). AMPH has been more active on our scanner (44 vs 42 alerts in 30 days). AMPH has the smaller float (42.2M vs 1.22B), which tends to mean sharper, more volatile moves. Those are the measured differences, not a recommendation, and nothing here is investment advice.

What is the difference between AMPH and SNY?

The differences that matter: SNY is roughly 89x the size of the other by market cap ($1.10B vs $97.18B); they trade at very different share prices ($25.81 vs $40.36); AMPH sits at 71% of its 52-week range against 9% for SNY; only SNY pays a dividend; our scanner flagged AMPH 44 times in the last 30 days against 42 for SNY. Everything above is measured from the latest completed session and SEC filings.

Which of AMPH and SNY is more active right now?

Right now AMPH is at about 0.9x its normal volume and SNY is at about 1.1x, so SNY is the one drawing unusual attention today. Relative volume (RVOL) compares a stock's volume to its own recent average, so it reads the same way for a megacap and a microcap and is the quickest way to tell which of two similar names is actually in play.

Is this comparison data live?

Prices and % changes are anchored to the latest completed session and split-adjusted, so a reverse split never shows as a fake move. Float is estimated from SEC filings and refreshed as new filings publish.

Compare

AMPH vs SNY

TheDesperateTrader.com· Side-by-side stock comparison

$AMPH vs $SNY head to head: price, market cap, valuation, dividend, free float, relative volume and how actively each trades. The bigger value in the size rows is bolded. Tap either ticker for its live chart, full ownership breakdown and real-time alerts.

$AMPHAmphastar Pharmaceuticals, Inc.

$SNYSanofi American Depositary Shares (Each representing one-half of one ordinary share)

$25.81

Price

$40.36

+0.0%

Day change

+0.3%

$1.10B

Market cap

$97.18B

—

P/E ratio

21.06

—

Dividend yield

5.99%

42.2M

Free float

1.22B

73.10%

Institutional

7.94%

493K

Avg volume

2.7M

0.9x

Rel. volume

1.1x

71% of 52w

52-week range

9% of 52w

Scanner alerts 30d

Pharmaceutical Preparations

Sector

Pharmaceutical Preparations

AMPH vs SNY: the quick read

·SNY is the larger company by market cap ($97.18B vs $1.10B).
·AMPH has been more active on our scanner (44 vs 42 alerts in 30 days).
·AMPH has the smaller float (42.2M vs 1.22B), which tends to mean sharper, more volatile moves.
·Both are pharmaceutical preparations names, so this is a like-for-like comparison and sector news tends to move them together.
·Both stay busy on our scanner, 44 and 42 unusual-volume alerts over 30 days, so neither is the quiet one here.
·They are not really peers by size: SNY is more than 89x the market cap of AMPH, so the same dollar of news moves AMPH far harder.
·SNY pays a dividend and AMPH does not, which usually means one is being held for income and the other for the move.

Objective differences only. Not investment advice.

$AMPH full page →$SNY full page →Add more tickers

Get the best catches in your inbox

Free daily email of the top plays and unusual-volume alerts our scanner flags. No account needed.

No spam. Unsubscribe anytime. Not investment advice.

Frequently asked questions

Everything you need to know comparing AMPH and SNY on TheDesperateTrader.

Is AMPH or SNY the better stock?: "Better" depends on your goal, and these two are not alike. SNY is the larger company by market cap ($97.18B vs $1.10B). AMPH has been more active on our scanner (44 vs 42 alerts in 30 days). AMPH has the smaller float (42.2M vs 1.22B), which tends to mean sharper, more volatile moves. Those are the measured differences, not a recommendation, and nothing here is investment advice.
What is the difference between AMPH and SNY?: The differences that matter: SNY is roughly 89x the size of the other by market cap ($1.10B vs $97.18B); they trade at very different share prices ($25.81 vs $40.36); AMPH sits at 71% of its 52-week range against 9% for SNY; only SNY pays a dividend; our scanner flagged AMPH 44 times in the last 30 days against 42 for SNY. Everything above is measured from the latest completed session and SEC filings.
Which of AMPH and SNY is more active right now?: Right now AMPH is at about 0.9x its normal volume and SNY is at about 1.1x, so SNY is the one drawing unusual attention today. Relative volume (RVOL) compares a stock's volume to its own recent average, so it reads the same way for a megacap and a microcap and is the quickest way to tell which of two similar names is actually in play.
Is this comparison data live?: Prices and % changes are anchored to the latest completed session and split-adjusted, so a reverse split never shows as a fake move. Float is estimated from SEC filings and refreshed as new filings publish.

Trading AMPH or SNY? Get real-time unusual-volume alerts the moment either one moves, free.

No card · 5 premium days

Explore the market

Free, live market tools. No account required to look.

Site GuideEvery page explained, and how to trade with it Top Stocks TodaySix ranked stocks, live charts, why each one RegularsThe names that keep coming back to the top of the scanner Due DiligenceDeep dives on one ticker, traced to SEC filings and the tape Super PortfolioEvery big holding from 13F filings and corporate stakes Free Stock ScannersEvery scanner in one place Caught EarlyWhat our scanner flagged before it ran How It WorksOur data, methodology & accuracy Trading CalculatorsPosition size, profit & average down Trading Taxes ExplainedWash sales, trader status and what you owe Stock Market TodayWhat’s actually moving right now Low Float MoversWho traded their whole float today Betting AgainstWho the market is short, and which funds hold puts Our Call RecordEvery name we posted and what it did next, losers included Stocks to WatchTop 10 to watch next session, with reasons Trending StocksWhat’s moving & being searched now Stock Sectors & ThemesAI, crypto, energy, banks & 40 more Biggest Gainers TodayTop gainers & most active Why Stocks Are MovingToday’s movers + the catalyst behind each Insider BuyingStocks insiders are buying (Form 4)Biggest Losers TodayTop decliners & worst performers Premarket MoversTop gainers & losers before the bell Gap ScannerBiggest gap ups & downs. Did it fill?After Hours MoversTop gainers & losers after the close Most Active StocksHighest dollar-volume names 52-Week Highs & LowsStocks making new highs & lows Stock SplitsUpcoming & recent, and what happened after Oversold StocksLowest RSI, mean-reversion watch Low Float StocksSmallest floats, squeeze watch Most Volatile StocksBiggest daily range by ATR%Most Shorted StocksHighest short % of float Short Squeeze StocksTop squeeze candidates by score Penny StocksMost active under $5 Stocks Under $1Most active sub-$1 names Stocks Under $10Most active under $10 Overbought StocksHighest RSI, extended / pullback watch Weekly MoversBiggest gainers & losers this week Stock ScreenerScan by price, volume & RVOL The Money MapMarket cap added or wiped, by sector Sector PerformanceBest & worst sectors today Store ClosuresRetail & restaurant stocks under pressure Earnings CalendarWho reports before open & after close Earnings Next WeekThe week ahead, biggest names by day Moving After EarningsBiggest post-earnings gainers & losers Economic CalendarFOMC, CPI, jobs & market-moving data Dividend CalendarEx-dates, yields & buy-by dates IPO CalendarRecent & upcoming stock listings Daily RecapHow each session played out RVOL ScannerLive unusual-volume alerts Halt ScannerLive trading halts & resumes Stock Halts TodayHalted stocks + reasons & resumes Most-Halted StocksRanked: which stocks halt most, 30d Live AlertsThe real-time scanner feed Smart MoneyInsider buys, 5% stakes & 13F Reddit RadarTrending tickers & top posts Google Search RadarStocks America is Googling now Market CalendarEconomic, earnings & dividends in one Crypto PricesLive Bitcoin, Ethereum & top coins Currency ConverterExchange rates: EUR, GBP, JPY & more Mortgage RatesCurrent 30-year & 15-year rates AI StocksThe AI buildout: chips, cloud & software Semiconductor StocksChipmakers & equipment, and why they move