Federal Reserve Policy: Interest rate changes and quantitative easing influence borrowing costs and investor sentiment, impacting mortgage rates and subsequently FNMAK's value.

Mortgage Rates: As mortgage rates fluctuate, demand for mortgages and thus mortgage-backed securities like those FNMAK creates also changes, affecting its profitability.

Housing Market Conditions: The strength of the housing market, including home sales, prices, and construction activity, directly influences the volume of mortgages originated and securitized by FNMAK.

Economic Growth: Overall economic health, measured by GDP growth, employment rates, and inflation, impacts consumer confidence and the ability to repay mortgages, affecting the creditworthiness of FNMAK's securities.

Credit Spreads: The difference between the yield on FNMAK's securities and comparable Treasury bonds reflects market perception of risk, influencing investor demand and pricing.

Government Regulations: Changes in regulations affecting the housing finance market, such as capital requirements or guarantee fees, can significantly impact FNMAK's business model and profitability.

Investor Sentiment: General market optimism or pessimism can affect demand for riskier assets like mortgage-backed securities, leading to price fluctuations in FNMAK's stock.

Global Economic Events: International economic events, such as financial crises or changes in global interest rates, can indirectly affect the US housing market and investor sentiment towards FNMAK.

Company-Specific News: News about FNMAK's financial performance, management changes, or strategic initiatives can influence investor confidence and the stock price.