NEW YORK » Wall Street has turned the clock back to 1997.

Investors unable to extinguish their worries about a recession that has no end in sight dumped stocks again yesterday. The Dow Jones industrial average tumbled 251 points to its lowest close since May 7, 1997, while the Standard & Poor's 500 index logged its lowest finish since April 11, 1997. It's as if the decade's dot-com surge, collapse and subsequent recovery never occurred.

The Dow is just over 100 points from 7,000. Both indexes have lost about half their value since hitting record highs in October 2007.

Investors pounded most financial stocks even as government agencies led by the U.S. Treasury Department said they would launch a revamped bank rescue program this week. The plan includes the option of increasing government ownership in financial institutions without having to pour more taxpayer money into them.

The Dow dropped 250.89, or 3.41 percent, to 7,114.78. It last closed this low on May 7, 1997 when it finished at 7,085.65. The Dow hasn't traded below the 7,000 mark since October 1997. The index is down 14 percent over the past 10 sessions.

The Standard & Poor's 500 index fell 26.72, or 3.47 percent, to 743.33. It was the lowest close since April 11, 1997, when it ended at 737.65.

Yesterday, the S&P 500 did close above its Nov. 21 trading low of 741.02. But the 14-month recession has decimated the major indexes: The Dow is down 49.8 percent from its record highs of October 2007, while the S&P 500 index is down 52.5 percent.

The technology-laden Nasdaq composite index dropped 53.51, or 3.71 percent, to 1,387.72.

Bond prices were mixed. The yield on the benchmark 10-year Treasury note, which moves opposite its price, fell to 2.76 percent from 2.79 percent late Friday. The yield on the three-month T-bill, considered one of the safest investments, rose to 0.29 percent from 0.26 percent Friday.

The dollar was mixed against other major currencies, while gold prices fell.

Light, sweet crude fell $1.59 to settle at $38.44 per barrel on the New York Mercantile Exchange.

Investors looking for a bottom also dumped smaller stocks. The Russell 2000 index of smaller companies fell 16.38 or 3.99 percent, to 394.58.

Declining issues outnumbered advancers by more than 6 to 1 on the New York Stock Exchange, where consolidated volume came to 6.35 billion shares compared with heavy volume of 8.12 billion shares on Friday.