NEW YORK ( TheStreet) --  Lockheed Martin (LMT) - Get Report closed out last week with a slight loss, its fourth straight, leaving it in a vulnerable position.

While the stock didn't give up much ground during this streak, it is beginning to fall below a very heavy moving-average cluster. Just above Friday's high, a great deal of downside pressure is beginning build. Lockheed's declining 50-day moving average will cross below the 200-day early next week. In all, there are four moving averages (13- and 30-day included) that are converging overhead near the $191 area.

The very narrow consolidation that Lockheed has been working through since the late April selloff  is now in danger of giving way to a deep break. The stock managed to stabilize and rebound somewhat in early May, but further upside has been difficult this month. The stock retested its May peak last week but was quickly turned back at the $194.50 area. The stock is still within the consolidation's eight-week range, which has straddled both sides of its 200-day moving average, but Friday's action indicates this pattern may end soon.

A close at fresh June lows early this week would be a clear warning sign. If selling pressure picks up during a break of $188, Lockheed Martin could be headed for fresh 2015 lows. The stock has a very solid support zone in place near the $186 area, but the overhead pressure now building above the late highs of last week could overpower the February/April lows.

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At the time of publication, Morrow had no positions in the stocks mentioned.