Financial stocks took another downturn Friday to cap off a mostly bearish week for the sector, which saw a harrowing influx of poor financials.

Among the culprits today was

Wachovia

(WB) - Get Report

, which fell 2% after joining the parade of financial services firms whose earnings were rotted out by credit market disruptions. Its third-quarter profit slid 24.4% year over year to 90 cents a share, or $1.71 billion (excluding one-time items) amid a credit-loss provision of $408 million that more than doubled from last quarter.

Revenue rose 4.3% from last year to $7.35 billion. Analysts polled by Thomson Financial were looking for income of $1.03 a share on revenue of $8.02 billion. Shares of the Charlotte, N.C., bank were recently down 98 cents to $47.16.

Citigroup

(C) - Get Report

, which reported an

even worse earnings tumble earlier this week, lately lost another 1.1% to $43.34. The

radiant pain was even

sharper for

Bank of America

(BAC) - Get Report

and

Washington Mutual

(WM) - Get Report

, each of which reported their own weak profits just yesterday. Shares were off 1.8% and 5.5%, respectively.

All of the above stocks helped to pressure both the

NYSE

Financial Sector Index, down 1.7%, and the KBW Bank Index, down 1.3%, along with a sinking

Capital One

(COF) - Get Report

.

The McLean, Va., credit card issuer, burdened by the high costs of shutting down its GreenPoint Mortgage business, swung to a third-quarter loss of $81.6 million, or 21 cents a share. The $883 million charges were slightly higher than expected due to the dwindling value of the business. On average, analysts were looking for a loss of 30 cents a share; last year, Capital One had a profit of $1.89 a share.

Freidman Billings lowered Capital One's rating to market perform from outperform on the heels of the report. The analyst pointed to its auto-finance segment, in particular, which incurred a $3.8 million loss after a 51.7% jump in the division's loan-loss provision more than wiped out a 5.8% revenue gain. Shares surrendered $2.28, or 3.5%, to $63.72.

Preferred Bank

(PFBC) - Get Report

plunged 9.7% to $33.22, also thanks in part to a Friedman downgrade on continuing broad-market concerns. The move came a day after Preferred reported income of 69 cents a share, excluding items, against Wall Street's 68-cent expectations.

Elsewhere, struggling brokerage

Bear Stearns

( BSC) dipped a day after Warren Buffet told

Fox Business News

that, contrary to rumors, he's not interested in buying a Bear stake through his firm

Berkshire Hathaway

(BRK.A) - Get Report

. Bear stock was recently down 44 cents to $118.90. Berkshire lost 1.5% to $127,100.

Janus Capital

TheStreet Recommends

(JNS)

lost ground on the resignation of David Corkins, portfolio manager for the Denver firm's flagship Janus Fund, among others. Janus Enterprise Fund manager Jonathan Coleman will replace him. In August, the company announced the year-end departure of Scott Schoelzel, another high-profile fund manager. Shares were down $1.44, or 4.4%, to $31.

Countrywide

( CFC) was still slumping 6.8% a day after

The Wall Street Journal

reported that the

Securities and Exchange Commission

has launched an informal probe on stock sales by CEO Angelo Mozilo, and fellow mortgage lenders

IndyMac Bancorp

( IMB),

Thornburg Mortgage

( TMA) and

Impac Mortgage

(IMH) - Get Report

were falling 5.7%, 2.9% and 13.7%, respectively.

Mortgage insurers also continued sliding in the wake of

MGIC's

(MTG) - Get Report

big third-quarter loss, which posted earlier this week. MGIC shares took another 8% fall today, and

Radian

(RDN) - Get Report

, whose proposed merger with MGIC was

canceled last month due to broad-market pressures, tumbled 11% to $14.38.

Triad Guaranty

(TGIC)

gave up 16.4% to $7.77, and

PMI

( PMI) lost another 14.5% following yesterday's share-pummeling warning of a third-quarter loss.

On the lonely upside, meanwhile, was

NYSE Euronext

(NYX)

, which rose 2.7% to $84.83 after getting added to the

S&P 500

and the S&P 100 as of market close next Wednesday.

Las Vegas-based

Western Alliance Bancorporation

(WAL) - Get Report

made 35 cents a share to miss third-quarter estimates by a penny, but its $52.7 million revenue came in a hair over the mean. Shares were climbing 2.7% to $21.99.