The stock market plunged Monday after market analysts downgraded data networking stocks because it appears telephone companies will reduce their investments in equipment to carry data over their networks.

As a result, the Nasdaq fell 152 points, or 5%, to its near lowest point since October 1999.

The Dow Jones Industrial Average also dove 167 points, or 1.6%, on Monday.

Meanwhile, RV stocks closed mostly lower.

Here is a roundup of RV company stock activity Monday:

Fleetwood declined 1/8 at 13 1/16

Winnebago was unchanged at 11 1/4

Thor gained 3/8 to close at 20 13/16

Coachmen gained 1/4 to close at 8 1/4

Monaco declined 1/16 to close at 14 9/16

National RV declined 1/8 to close at 8 1/16

Skyline declined 1/4 to closeat 21 5/16

SMC declined 1/8 to close at 2 3/8

Holiday RV Superstores was unchanged at 4 3/8

Rexhall declined 5/16 to close at 4 15/16

Kit declined 1/8 to close at 4 3/4

Coast Distribution was unchanged at 1

Featherlite declined 1/4 to close at 2

Spartan Motors gained 1/16 to close at 2 3/8

Starcraft declined 1/2 to close at 3