Fannie Mae is one of the United States' largest mortgage financing institutions, operating as a government-sponsored enterprise for over five decades. The company plays a critical role in the secondary mortgage market, purchasing and securitizing mortgages from lenders nationwide. A public offering would represent a historic transition from government sponsorship to public equity ownership. Market capitalization—share price multiplied by outstanding shares—is a directly measurable metric at the close of any trading day. The $200 billion to $250 billion range represents a specific valuation corridor that could reflect various investor sentiment scenarios. At current 0% odds, the market reflects strong consensus that this particular cap range is unlikely on IPO day, though broader valuations are certainly possible. Fannie Mae's actual IPO valuation will depend on pricing strategy, investor demand, mortgage market conditions, and broader macroeconomic factors. This market allows traders to position on a precise valuation outcome during a transformative corporate event for the housing finance sector.