NEW YORK (AP) â Wall Street's wild swings returned Friday, with the Dow Jones industrial average jumping more than 300 points by midday following strong corporate earnings reports from Morgan Stanley, General Electric and Textron. Homebuilder stocks rose following a report that U.S. home construction picked up last month, and energy stocks gained as the price of crude oil turned higher.

KEEPING SCORE: The Dow was up 302 points, or 1.9 percent, to 16,420 as of 12:05 p.m. Eastern. The Standard & Poor's 500 index added 35 points, or 1.8 percent, to 1,896 and the Nasdaq composite rose 75 points, or 1.8 percent, to 4,292.

VOLATILITY: Investors have been riding wild market swings for much of the week. The increased volatility reflects heightened concerns about weaker growth in Europe and its implications on corporate profits, as well as plunging oil prices and many geopolitical uncertainties, from conflicts in Syria and Iraq to the unknown impact of the Ebola virus outbreak.

Traders attributed the bounce on Friday to several factors. St. Louis Federal Reserve President James Bullard said in an interview Thursday that the central bank should delay cutting back its economic stimulus. Also, the S&P 500 and Nasdaq composite came close to entering into what's known as a "correction," or a decline of 10 percent or more from a recent peak. Technical traders will often step back into the market when indexes approach a correction. Also, strong corporate earnings are helping allay investors' concerns.

"There's got to be a little bit of a relief rally in this," said Drew Wilson, equity analyst with Fenimore Asset Management.

TRADING BOOST: Morgan Stanley reported that its net income nearly doubled in the third quarter, helped by strength in its institutional securities and wealth management divisions. The investment bank's results topped Wall Street expectations. Morgan Stanley rose 81 cents, or 2.5 percent, to $33.36.

BEATING THE STREET: General Electric's shares rose nearly 4 percent after the company reported better-than-anticipated third-quarter profit, citing improved performance in its aviation and oil and gas divisions. Since GE's large range of businesses cover so many parts of the economy, investors often see its results as a bellwether for how U.S. industry is doing. GE rose 91 cents to $25.16.

Textron, another industrial conglomerate, led the gainers in the S&P 500 index with a 14 percent jump after its own earnings came in far ahead of what analysts were expecting. Textron rose $4.69 to $38.35.

Overall, the S&P 500's industrial sector rose 2.5 percent in midday trading, making it the best performing part of the market.

HARD HAT AREA: Homebuilder stocks rose after the Commerce Department reported that construction firms broke ground on more apartment complexes in September, pushing up the pace of U.S. homebuilding up 6.3 percent to a seasonally adjusted annual rate of 1.017 million homes. Apartment construction has surged 30.3 percent over the past 12 months. Hovnanian Enterprises jumped 18 cents, or 5 percent, to $3.68 and Beazer Homes rose 52 cents, or 3 percent, to $17.51.

OVERSEAS MARKETS: After sharp falls earlier this week, European markets rose, continuing a pattern of highly volatile trading. France's CAC 40 rose 2.2 percent, while Germany's DAX jumped 2 percent. Britain's FTSE 100 rose 1.3 percent. In Asia, Hong Kong's Hang Seng rose 0.5 percent and Australia's S&P/ASX 200 added 0.3 percent. Japan's Nikkei 225 sank 1.4 percent.

BONDS AND OIL: U.S. Treasury yields rose as their prices fell. The yield on the 10-year Treasury note rose to 2.20 percent from 2.15 percent late Thursday. Benchmark U.S. crude rose 46 cents to $83.14 a barrel in New York.