Caesars Entertainment Corp. (Nasdaq: CZR) said that it plans to raise up to $5 billion in new debt to refinance $4.4 billion in commercial mortgage-backed securities and a $450 million commercial mortgage-backed securities. Caesars is controlled by Apollo Global Management and TPG Capital.www.caesars.com

Gentiva Health Services (Nasdaq: GTIV) has agreed to acquire Harden Healthcare Services, an Austin, Texas-based owner and operator of senior care facilities, for approximately $409 million in cash ($355m) and stock. Sellers include Capstar Partners. www.hardenhealth.com

Groupon (Nasdaq: GRPN) has acquired SideTour, a New York-based marketplace for people to offer and share unusual experience opportunities. No financial terms were disclosed. SideTour had raised $1.5 million in seed funding co-led by Foundry Group and RRE Ventures. www.sidetour.com

Acceleron Pharma Inc., a Cambridge, Mass.-based developer of protein therapeutics for cancer and rare diseases, raised around $84 million in its IPO. The company priced 5.6 million shares at $15 per share, compared to original plans to offer 4.65 million shares at between $13 and $15 each. It has an initial market cap of approximately $410 million, and will trade on the Nasdaq under ticker symbol XLRN. Citigroup and Leerink Swann served as co-lead underwriters. Shareholders include Polaris Venture Partners (15.6% pre-IPO stake), Venrock Partners (12.4%), Advanced Technology Ventures (12.5%), Celgene Corp. (12.3%), Flagship Ventures (11.1%), OrbiMed Advisors (10.6%), Bessemer Venture Partners, Alkermes, Avalon Ventures and Sutter Hill Ventures. www.acceleronpharma.com

Rocket Fuel Inc., a Redwood Shores, Calif.-based provider of artificial intelligence advertising solutions for digital marketer, has raised its IPO price range from $24-$27 per share to $27-$29 per share. It still plans to offer 4 million shares, and trade on the Nasdaq under ticker symbol FUEL. Credit Suisse and Citigroup are serving as lead underwriters. RocketFuel has raised more than $75 million in VC funding from Mohr Davidow Ventures (40.1% pre-IPO stake), Nokia Growth Partners (9.5%), Northgate Capital (7.2%) and Labrador Ventures (5.3%). www.rocketfuel.com

J.P. Morgan is expected to be lead underwriter for the upcoming Chrysler IPO, according to CNBC.www.chrysler.com

RE/MAX Holdings Inc., a Denver-based  real estate brokerage, set its IPO terms to 10 million shares being offered at between $19 and $21 per share. It plans to trade on the NYSE under ticker symbol RMAX, with Morgan Stanley, BoA Merrill Lynch and J.P. Morgan serving as lead underwriters. The company reports around $15 million in net income on $78 million in revenue for the first six months of 2013, compared to $14 million on $70 million in revenue for the year-earlier period. The company is controlled by private equity firm Weston Presidio. www.remax.com

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