Two major stock market indexes climbed above pre-Sept. 11 levels today (Oct. 11), and RV stocks, in most cases, also reported gains.

The NASDAQ Composite and the S&P 500 posted gains today because of upbeat news from “old economy” stalwart General Electric and “new economy” bellwethers Yahoo! and E*Trade.

Among RV firms, recent high fliers Monaco and Winnebago posted the biggest gains today. Monaco gained 85 cents, or 5%, to close $16.71, while Winnebago climbed $1.02, or 4%, to close at $26.51.

However, dealership chain Holiday RV Superstores, which has experienced extreme stock price volatility in recent days, declined 60 cents today, the equivalent of 23% of its value, to close at $2.05.

Holiday RV Superstores, which does businesses as Recreation USA, traded in the $3.25 to $3.50 range for most of the past year. But in recent days, it established new 52-week lows on a few occasions. Its 52-week low now is $1.95