US STOCKS-Wall St edges up; S&P hits 2,100 on Greece hopes
* Investors watching situations in Greece, Ukraine
* S&P 500 hits intraday record high
* Celsus shares plummet after drug fails study
* Indexes: Dow up 0.1 pct; S&P 500 up 0.1 pct; Nasdaq up 0.02 pct (Updates to late trading)
By Caroline Valetkevitch
NEW YORK, Feb 17 (Reuters) - U.S. stocks inched higher on Tuesday, pushing the S&P 500 above 2,100 to another record intraday high as optimism grew that a debt deal would be reached with Greece.
A source told Reuters that Greece intends to ask for an extension of a loan agreement tomorrow. The report follows a collapse of deal negotiations on Monday, which led to European Union finance ministers pressuring the country to remain in an international financial rescue program.
U.S.-listed shares of the National Bank of Greece were up 1.6 percent after falling more than 13 percent earlier in the session.
The news was viewed as another sign of progress, building on the recent optimism that contributed to major indexes notching a second straight week of solid gains last week. Continuación...