Stocks opened slightly higher as Wall Street digests a slew of merger-and-acquisition news.

Looming ahead tomorrow,

Federal Reserve

Chairman

TST Recommends

Alan Greenspan

kicks off his semiannual

Humphrey-Hawkins

testimony on the state of the economy.

The

Dow Jones Industrial Average

was up 13 to 9353. The

S&P 500

was up 3 to 1242. The

Nasdaq Composite Index

was up 1 to 2284. The

Russell 2000

was up 2 to 394.

TheStreet.com Internet Sector

was down 2 to 470.

TheStreet.com E-Commerce Index

was up 1 to 96.

The benchmark 30-year Treasury bond was up 6/32 to 98 8/32, yielding 5.37%.

Meanwhile,

BancBoston Robertson Stephens'

16th annual

Technology Conference

kicks off today in San Francisco. TheStreet.com previewed the conference in a story

today.

Most Up at Open -- NYSE

America Online (AOL) , up 2 3/8 to 162 1/4

.

Most Up at Open -- Nasdaq

Rambus (RMBS) - Get Report, up 6 3/8 to 77 3/8

.

Most Down at Open -- NYSE

Eli Lilly (LLY) - Get Report, down 1 5/16 to 91 3/4

.

Most Down at Open -- Nasdaq

Vignette (VIGN) , down 4 5/16 to 38 3/8

.