(

Updated with final stock price moves throughout

.)

NEW YORK (

TheStreet

) --

American International Group

(AIG) - Get Report

was among the decliners of the financial sector Tuesday after an analyst downgraded the stock and set a stock price target that would halve the current share price.

Credit Suisse analysts downgraded

AIG's stock

to underperform from neutral, offering a $15 stock price target. The firm said AIG's near-term monetization of its core businesses would leave "little to no value" for common equity holders.

Over the weekend, AIG said that it had sold one major asset-management unit for an estimated $500 million.

Reuters

reports that

Chinatrust Financial

has made a $2.4 billion bid for AIG's Taiwan

Nan Shan Life

unit, outbidding rivals including

Primus Financial

.

Separately,

The Wall Street Journal

on Tuesday reported that the insurer is prepping other life insurance units for initial public offerings next year. However, AIG shares were weighed by the Credit Suisse downgrade, falling 10.5% to close at $35.85.

Among other decliners,

Fannie Mae

(FNM)

and

Freddie Mac

(FRE)

fell 5.6% and 7.9%, respectively, after James Lockhart, the former director of the Federal Housing Finance Agency and currently a vice chairman at W.L. Ross, predicted

both would never fully repay their debts

to the U.S. government.

"I've said and I continue to say that unfortunately the U.S. will probably not be repaid for its full investment in Fannie and Freddie," Lockhart said Tuesday during an appearance on

CNBC's

"Squawk Box." He also predicted that the small profit Freddie reported in the last quarter will not continue.

Elsewhere, bank stocks were mixed Tuesday in an absence of any major headlines.

Citigroup

(C) - Get Report

shares lost 3.5% to close at $4.68 and

Bank of America

(BAC) - Get Report

dipped 0.4% to $17.02. On the upside,

JPMorgan Chase

(JPM) - Get Report

tacked on 0.5% to finish the day at $42.54 and

Goldman Sachs

(GS) - Get Report

rose 2.6% to $167.22.

Also on the winning side,

E*Trade Financial

(ETFC) - Get Report

rose 6.5% to close at $1.65. Last week, William O'Brien, CEO of electronic trading platform

Direct Edge

, told

The Wall Street Journal

that the recent surge in financial stocks has lifted revenues, given hope to investors that other trading platforms will also benefit.

Other online brokerages traded higher alongside E*Trade shares.

Charles Schwab

(SCHW) - Get Report

gained 2.1%,

Interactive Brokers

(IBKR) - Get Report

was up 0.9%, and

TD Ameritrade

(AMTD) - Get Report

finished higher by 0.8%.