NEW YORK — Shares of financial companies dragged the general market lower for the start of September, with shares of American International Group Inc. leading the drop-off.

AIG - which saw its shares more than triple in August on increased optimism - pared some of those gains Tuesday. Sanford Bernstein analyst Todd Bault cut his rating on AIG shares to underperform from market perform, citing risk that the government may reduce its support of the bailed-out insurer soon. Shares recently dropped 17% to $37.62.

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