The Housing Wire reports that the Standard & Poor’s Ratings Services lowered Fannie and Freddie’s preferred stock rating to ‘BBB-’ from ‘A-,’ while cutting a host of other ratings as well, and warning that further cuts may be coming in the future. The ratings agency said it cut the ratings over “increasing uncertainty about whether government support will extend to these securities in the context of further deterioration” in each GSE’s assets. It further reports that it’s becoming clear that holding preferred interests in either GSE is going to be hazardous to Q3 earnings.

Shares of the two mortgage financing giants each hit a new 52-week-low. They’ve lost more than a fifth of their value on Wednesday as fears mounted that the companies will soon need government support. Regional banks and insurers hold the majority of Fannie and Freddie’s $36 billion in preferred stock, and any bailout would hang these stockholders out to dry.  Many financing experts wonder why Fannie and Freddie have not moved to a insured home loan platform like FHA.  The government has backed FHA home loans and FHASecure for fixed rate refinancing and foreclosure prevention

Dow components Bank of America (BAC, Fortune 500) fell nearly 4% while Citigroup (C, Fortune 500) was down 2.5%. Wachovia’s (WB, Fortune 500) stock fell 7%. And shares of the investment bank Lehman Brothers (LEH, Fortune 500), which is facing its own concerns about the need for more capital, plunged 9%.  “There’s a big negative feedback loop and there’s no way out of it,” Friedman, Billings, Ramsey & Co. analyst Paul Miller said in an interview. “As the stock falls more and more, it’s more likely the government steps in and more likely equity holders get wiped out.”

It’s looking more and more like the government bailout of Fannie Mae and Freddie Mac will become the taxpayers’ burden. JP Morgan Chase & Co.’s CEO, Jamie Dimon said in a Q2 earnings call that prime mortgages looked “terrible.” This is an indicator that it’s not just sub-prime mortgages with bad credit that are going sour. Even with all of the loan modifications, the home foreclosures are not stopping.

Fannie Mae has reported a loss for the past two quarters while Freddie Mac has posted three consecutive quarterly losses. Both companies are expected to report a loss in the second quarter as well.  Fannie Mae’s chief executive sought to reassure investors that no bailout is imminent. They haven’t offered anything and we haven’t asked for anything,” Fannie Mae CEO Daniel Mudd said in a public radio interview Wednesday morning. “I don’t anticipate that they will do that.”

Armando Falcon, who served for six years as Fannie and Freddie’s chief government regulator, expects a full-fledged government takeover before year-end. The companies’ financial picture is far worse than they have acknowledged, he said, particularly for riskier mortgage loans they purchased as investments.