Assuming the business survives to break-even, various early-stage and later-stage financing rounds may then be negotiated, allowing first- and subsequent-generation products to mature and hopefully penetrate their markets. Many promising companies are acquired during this period; if they're not, the next major milestone is often the IPO (Initial Public Offering), following which, all being well, a healthy share price provides existing private investors with a tangible return. Not all IPOs go as planned, however, and many startups choose to remain in private hands if they have the means to finance their growth plans. Occasionally, public companies return to private ownership -- the most notable enterprise-tech example being Dell, which implemented a $24.4 billion leveraged buyout in February 2013.