Market Place: A Company’s Stock Suffers, But Mostly In Silence

By its own measures, everything looks good at ACA Capital Holdings, a financial management and insurance company. But other numbers do not look so good, and the stock price is falling rapidly. The company will not comment on what is going on.

In New York Stock Exchange trading yesterday, ACA shares fell 22 percent, dropping $1.87, to $6.59, on the heaviest volume in the company’s brief history. The shares have lost a third of their value since Thursday, and are trading at less than half of their value a month ago.

ACA has written billions of dollars worth of insurance on the value of financial assets, and it manages collateralized debt obligations, or C.D.O.’s — investment vehicles that invest in bonds backed by risky mortgages and other debt — on billions more. Some of the C.D.O.’s it manages for others were mentioned by bond rating agencies last week as candidates for downgrading.

But it is not clear how much pain ACA could suffer from the subprime market. In detailing its exposure to subprime mortgage loans on its Web site last week, the company said that nearly all of its direct exposure to subprime mortgage debt came through securities rated AAA by at least one bond rating agency. Such securities have generally held their value even as others have plunged in market value amid turmoil in the subprime market.

Late yesterday, Standard & Poor’s, the rating agency, said it was considering lowering ratings on various securities issued by 19 C.D.O.’s, including 4 managed, though not owned, by ACA. The agency said the moves “reflect the increased probability of default” of underlying mortgages.

Until last month, ACA’s assurances had satisfied investors, although the stock suffered briefly on May 10, when it reported first-quarter earnings. Under normal accounting rules, those results showed that profits were down sharply, and that book value had plunged because of declines in market value of some assets.

But the stock quickly recovered to above $14 a share after the company pointed to its own adjusted measures of earnings, which showed rapid increases in both profits and book value.

In June, the shares began to slide again after the company said that insiders, primarily private equity firms that owned the company before it went public last November, wanted to sell 3.9 million shares, more than a tenth of the shares outstanding.

The proposed offering by insiders was quickly withdrawn after the stock came under pressure, but the selling intensified last week.

Yesterday, the company refused to answer any questions and told the stock exchange that it would not comment on its plunging price. That served to intensify the selling pressure. Including the 3.1 million shares that traded yesterday, 4.7 million shares — about two-thirds of the 6.9 million shares in public hands — have traded in the last two sessions.

The company’s largest shareholder, with a 27.6 percent stake, is a fund managed by Bear Stearns Merchant Banking, an affiliate of the Bear Stearns Companies, whose own shares fell $2.58 yesterday, to $140.31. Last month, Bear Stearns was forced to bail out a hedge fund it managed that had suffered losses in subprime mortgage securities.

In a statement, John D. Howard, the chief executive of Bear Stearns Merchant Banking, said, “We have great confidence in ACA’s management team.”

After ACA disclosed the extent of its subprime exposure last week, Craig Siegenthaler, an analyst at Credit Suisse, said the disclosure increased the risk profile for ACA, and reduced his price target on the stock to $12, from $17.

ACA was forced to reduce both the price and the size of its offering before it went public last year at $13 a share. The share price fell below $13 for a couple of days after the offering, but stabilized and rose above $16 by February, before the subprime problems surfaced.

ACA is exposed to the mortgage market in two ways. The company manages and partly owns C.D.O.’s. and also insures investors in other C.D.O.’s.

In a report yesterday morning, Geoffrey Dunn, an analyst at Keefe, Bruyette & Woods, reduced his earnings forecast, saying that ACA’s price had fallen because it “has no real comparable peers in the publicly traded markets, is very complex and seems to operate in areas that are at the heart of the market’s current concerns.”

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