THIS WEEK

WASHINGTON — Commerce Department reports on retail sales for March; Commerce Department reports on business inventories for February; Treasury bill auction.

NEW YORK — Citigroup releases first-quarter earnings.

TUESDAY

Income tax returns due.

SUNNYVALE, Calif. — Yahoo releases first-quarter earnings.

WEDNESDAY

HARTFORD, Conn. — United Technologies Corp. to issue first-quarter earnings.

THURSDAY

NEW YORK — Conference Board reports its monthly Leading Economic Indicators Index.

WASHINGTON — Labor Department reports on weekly jobless claims; Freddie Mac reports on mortgage rates.

NEW YORK — American Express Co. releases first-quarter earnings.

FRIDAY

PEORIA, Ill. — Caterpillar releases first-quarter earnings.

THE ASSOCIATED PRESS