Today's pre-market stock movers: ARRY, RIOT, MRNA, NVAX and more

• $Array Technologies(ARRY.US)$ +12.87% (also names new CEO)

• $Tufin Software Technologies(TUFN.US)$ +43.41% (enters into definitive agreement to be acquired by Turn/River Capital in a $570 million transaction; TUFN shareholders will receive $13.00/share in cash)

• $Citius Pharmaceuticals(CTXR.US)$ +10.87% (reported topline results from the pivotal Phase 3 trial of I/ONTAK)

• $BioXcel Therapeutics(BTAI.US)$ +19.22% (FDA has approved IGALMI sublingual film for the acute treatment of agitation associated with schizophrenia or bipolar I or II disorder in adults )

• $Gogo Inc(GOGO.US)$ +10.6% (to join S&P SmallCap 600)

• $Zymeworks(ZYME.US)$ +5% (BCEL announces licensing agreement with ZYME)

• $AFC Gamma(AFCG.US)$ +3.9% (files for $1 bln mixed securities shelf offering)

• $Rexford Industrial Realty Inc(REXR.US)$ +3.6% (acquires four properties for $83 mln)

• $Iovance Biotherapeutics(IOVA.US)$ +2.1% (provides regulatory and clinical updates for lifileucel in metastatic melanoma; plans to complete BLA submission by August)

• $Nordic American Tankers(NAT.US)$ +2.1% (provides update on Suezmax vessels pricing)

• $Nine Energy Service(NINE.US)$ +1.9% (files for $250 mln mixed shelf offering; also files offering by selling shareholders)

• $Rivian Automotive(RIVN.US)$ +1.8% (provides QI production data says well-positioned to meet 25000 annual production guidance)

• $AstraZeneca(AZN.US)$ +1.7% (reports Ultomiris demonstrated sustained improvements in functional activities and quality of life in adults with generalised myasthenia gravis through 60 weeks)

• $Afya Ltd(AFYA.US)$ +1.4% (acquires CardioPapers for R$35.0 mln in cash)

• $LGI Homes(LGIH.US)$ +1.3% (reports it closed 658 homes in March)

• $Aptiv PLC(APTV.US)$ +0.4% (upgraded to Buy from Underperform at BofA Securities)

• $SMART Global(SGH.US)$ -2.46% (also authorizes $75 mln for share repurchases)

• $Spirit Airlines(SAVE.US)$ -3.862% (JBLU makes bid to acquire SAVE for $33/sh in cash; ULCC already has merger deal with SAVE sets up possible bidding war)

• $JetBlue Airways(JBLU.US)$ -3.96% (JBLU makes bid to acquire SAVE for $33/sh in cash; ULCC already has merger deal with SAVE sets up possible bidding war)

• $BioNTech(BNTX.US)$ -3.2% (Senate fails to pass procedural vote for $10 bln in COVID-19 funding for vaccines treatments and testing by a vote of 47-52)

• $Riot Platforms(RIOT.US)$ -2.9% (provides production and operations update for March)

• $Atreca(BCEL.US)$ -2.9% (BCEL announces licensing agreement with ZYME)

• $Moderna(MRNA.US)$ -2.2% (Senate fails to pass procedural vote for $10 bln in COVID-19 funding for vaccines treatments and testing by a vote of 47-52)

• $Novavax(NVAX.US)$ -2.1% (Senate fails to pass procedural vote for $10 bln in COVID-19 funding for vaccines treatments and testing by a vote of 47-52)

• $Dave & Buster's Entertainment(PLAY.US)$ -1.9% (acquires Main Event for $835 mln) • ADI -1.3% (announces new long-term financial modeling at Investor Day)

• $Frontier Group(ULCC.US)$ -1.1% (JBLU makes bid to acquire SAVE for $33/sh in cash; ULCC already has merger deal with SAVE sets up possible bidding war)

• $Cano Health(CANO.US)$ -7.2% (downgraded to Underweight from Neutral at Piper Sandler)

• $Avis Budget(CAR.US)$ -4.3% (downgraded to Underperform from Neutral at BofA Securities)

• $bluebird bio(BLUE.US)$ -3% (downgraded to Market Perform from Outperform at Cowen)

• $America's Car-Mart(CRMT.US)$ -2.8% (downgraded to Underperform from Buy at BofA Securities)

• $Builders FirstSource(BLDR.US)$ -2.7% (downgraded to Neutral from Buy at Bryan Garnier)

• $Ingersoll Rand(IR.US)$ -1.9% (downgraded to Peer Perform from Outperform at Wolfe Research)

• $Gates Industrial(GTES.US)$ -1.7% (downgraded to Peer Perform from Outperform at Wolfe Research)

• $Ameriprise Financial(AMP.US)$ -1.2% (downgraded to Underweight from Neutral at Piper Sandler)