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U.S. stocks rose on Monday, with Verizon boosting the telecoms sector after the stock got an upgrade, while a deal in semiconductors lifted high-performing tech shares.

U.S. stocks rose on Monday, with Verizon boosting the telecoms sector after the stock got an upgrade, while a deal in semiconductors lifted high-performing tech shares.

The latest on developments in financial markets (All times local): 9:35 a.m.

The latest on developments in financial markets (All times local): 9:35 a.m.

Wall Street ended the week on a sour note on Friday, with major indexes slipping modestly as investors weighed the fate of the Republicans’ tax overhaul plan.

Wall Street ended the week on a sour note on Friday, with major indexes slipping modestly as investors weighed the fate of the Republicans’ tax overhaul plan.

Stocks rocketed higher Thursday, powered by Walmart's earnings and the passage of the GOP's tax bill in the House.

Stocks rocketed higher Thursday, powered by Walmart's earnings and the passage of the GOP's tax bill in the House.

Auditors from the European Union's executive Commission say massive bailout programs for Greece were not properly planned and failed to anticipate the recessionary effect of austerity measures.

Auditors from the European Union's executive Commission say massive bailout programs for Greece were not properly planned and failed to anticipate the recessionary effect of austerity measures.

U.S. stocks fell on Wednesday as energy sector shares dropped for a fourth straight session, tracking crude prices, while tech, the best performing sector this year, weighed the most on the S&P 500.

U.S. stocks fell on Wednesday as energy sector shares dropped for a fourth straight session, tracking crude prices, while tech, the best performing sector this year, weighed the most on the S&P 500.

U.S. stocks fell Tuesday as General Electric continued its slide and weak oil prices hit energy names.

Interest rates on short-term Treasury bills rose in Monday's auction to their highest levels in nine years.

Interest rates on short-term Treasury bills rose in Monday's auction to their highest levels in nine years.

Wall Street retreated on Friday, putting stocks in negative territory for the week, as investors continued to worry over potential delays to tax cuts.

Wall Street retreated on Friday, putting stocks in negative territory for the week, as investors continued to worry over potential delays to tax cuts.

Senate Republicans have run into a problem with their proposed tax cuts: Under Senate rules, the cuts would expire after 10 years.

Senate Republicans have run into a problem with their proposed tax cuts: Under Senate rules, the cuts would expire after 10 years.

U.S. stocks are sinking Thursday morning as technology companies and most other parts of the market take sharp losses.