By Joseph Woelfel, TheStreet.com

Apple (AAPL), the iPhone, iPad and iPod maker, delivers its much-anticipated fiscal third-quarter report after the closing bell Tuesday and analysts are calling for earnings of $10.36 a share on revenue of $37.23 billion. The stock is up more than 45% so far in 2011, but it's pulled back quite a bit since hitting an all-time high of $644 on April 10. TheStreet will be live-blogging Apple's earnings beginning at 3:45 p.m. EDT on Tuesday.

AT&T (T), the telecommunication giant, reported second-quarter profit rose to $3.9 billion, or 66 cents a share from $3.59 billion, or 60 cents a share a year ago. The company also added 320,000 contract customers in the quarter. Analysts expected earnings of 63 cents a share and new net subscribers on contract-based plans of about 200,000 ; that compares with Verizon's gain of 888,000 in the second quarter. Shares of AT&T were up 0.5% in pre-market trading.

United Parcel Service (UPS) reported net income increased by 2% to $1.12 billion, or $1.15 per share, from $1.09 billion, or $1.09 per share, a year earlier. Analysts expected second-quarter net income of $1.17 a share on revenue of $13.69 billion. The world's largest delivery company lowered its full-year forecast by 25 cents per share to $4.50 to $4.75. Shares of UPS dropped 4% in pre-market trading.

DuPont (DD) reported net income for the second-quarter fell 3% to $1.18 billion, or $1.25 per share, from $1.22 billion, or $1.29 per share, for the same period last year. Excluding one-time items, net income was $1.48 per share, up from $1.37 for the same quarter last year. Revenue rose some 7% to $11 billion from $10.26 billion for the second quarter of 2011. Analysts expected second-quarter profit of $1.46 a share on sales of $11.25 billion. DuPont shares fell 0.8% in pre-market trading.

Netflix (NFLX) is seen by analysts Tuesday posting a profit of 5 cents a share in the June-ended quarter on revenue of $888.9 million. Netflix previously forecast 23.6 million to 24.2 million total U.S. subscriptions in the quarter vs. the 23.2 million total with which it finished the first quarter.

Lockheed Martin (LMT) second-quarter operating profit rose to $781 million, or $2.38 a share, from $742 million, or $2.14 a share, in the year-ago period. Sales increased to $11.92 billion from $11.54 billion. Analysts expected earnings of $1.91 a share in the second quarter on sales of $11.31 billion. The defense contractor also raised outlook for 2012 operating profit. Lockheed shares were up about 0.15% in pre-market trading.