14 Technical Levels Discussed On Tuesday's PreMarket Prep

The following stocks and technicals were mentioned on Tuesday's edition of PreMarket Prep, a daily trading ideas show hosted by former floor trader Joel Elconin and prop trader Dennis Dick.

You can listen to the show live every day from 8-9 a.m. ET here, or catch the podcast on iTunes, Soundcloud, and Stitcher.

• McDonald’s Corporation MCD - $166 was Monday's high; watch $165.51.
• Caterpillar Inc. CAT - needs to back through $140.30 for a buying opportunity. It hit a pre-market high of $141.98.
• General Motors Company GE - only a short if it goes back through the open of $45.91; hit a pre-market high of $47.26.
• Tesla Motors Inc TSLA needs to hold Monday's low of $336.25.
• 3M Co MMM is good to go north as long as opening low of $228.99 holds.
• Eli Lilly and Co LLY needs to hold the opening low of $87.30.
• Biogen Inc BIIB has limited support until the low of $306.
• Lockheed Martin Corporation LMT has a current low of $313.37, which matches the Oct. 19 low of $13.02.
• United Technologies Corporation UTX - current low of $119.91 matches the Oct. 20 low of 119.76; there's also a double top at $123.50 and $123.75.
• Corning Incorporated GLW found support at the old double top; there's air up to the July 26 high of $31.74.
• General Electric Company GE needs to hold $22; Friday's pre-market low was $21.47.
• T-Mobile US Inc TMUS - trying to clear a triple top at $62, and it has another pair of highs at $62.60.
• TD Ameritrade Holding Corp. AMTD - the opening print has held so far at $49.71; it needs to hold that, which is the top of Monday's range.
• Twitter, Inc. TWTR has a lot of lows at the $17.40 area from Oct. 10-11, Monday, and today.

You can listen to the full show below.