Is MGNX or ACIU the better stock?

"Better" depends on your goal, and these two are not alike. ACIU is the larger company by market cap ($263M vs $260M). MGNX has been more active on our scanner (15 vs 2 alerts in 30 days). MGNX has the smaller float (61.8M vs 93.0M), 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 MGNX and ACIU?

The differences that matter: they are similar in size ($260M vs $263M); they trade at very different share prices ($4.13 vs $2.69); MGNX sits at 75% of its 52-week range against 31% for ACIU; our scanner flagged MGNX 15 times in the last 30 days against 2 for ACIU. Everything above is measured from the latest completed session and SEC filings.

Which of MGNX and ACIU is more active right now?

Right now MGNX is at about 0.9x its normal volume and ACIU is at about 0.5x, so MGNX 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

MGNX vs ACIU

TheDesperateTrader.com· Side-by-side stock comparison

$MGNX vs $ACIU 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.

$MGNXMacroGenics, Inc.

$ACIUAC Immune SA

$4.13

Price

$2.69

+0.0%

Day change

+0.2%

$260M

Market cap

$263M

—

P/E ratio

—

Dividend yield

—

61.8M

Free float

93.0M

85.17%

Institutional

24.14%

486K

Avg volume

204K

0.9x

Rel. volume

0.5x

75% of 52w

52-week range

31% of 52w

Scanner alerts 30d

Pharmaceutical Preparations

Sector

Pharmaceutical Preparations

MGNX vs ACIU: the quick read

·ACIU is the larger company by market cap ($263M vs $260M).
·MGNX has been more active on our scanner (15 vs 2 alerts in 30 days).
·MGNX has the smaller float (61.8M vs 93.0M), 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.
·MGNX draws far more of our scanner's attention, 15 unusual-volume alerts in 30 days against 2, so it is the more actively traded of the two by some distance.
·They are closely matched in size, within 1% of each other on market cap, which makes the rest of this table the interesting part.

Objective differences only. Not investment advice.

$MGNX full page →$ACIU 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 MGNX and ACIU on TheDesperateTrader.

Is MGNX or ACIU the better stock?: "Better" depends on your goal, and these two are not alike. ACIU is the larger company by market cap ($263M vs $260M). MGNX has been more active on our scanner (15 vs 2 alerts in 30 days). MGNX has the smaller float (61.8M vs 93.0M), 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 MGNX and ACIU?: The differences that matter: they are similar in size ($260M vs $263M); they trade at very different share prices ($4.13 vs $2.69); MGNX sits at 75% of its 52-week range against 31% for ACIU; our scanner flagged MGNX 15 times in the last 30 days against 2 for ACIU. Everything above is measured from the latest completed session and SEC filings.
Which of MGNX and ACIU is more active right now?: Right now MGNX is at about 0.9x its normal volume and ACIU is at about 0.5x, so MGNX 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 MGNX or ACIU? 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