NEW YORK (TheStreet) -- The recent market volatility pushing stocks down has had a major impact on investment strategies for if you hold any or all of the five most popular momentum stocks.

Apple (AAPL) - Get Apple Inc. (AAPL) Report, Amazon.com (AMZN) - Get Amazon.com, Inc. Report, Google (GOOGL) - Get Alphabet Inc. Class A Report, Netflix (NFLX) - Get Netflix, Inc. (NFLX) Report and Tesla (TSLA) - Get Tesla Inc Report now have negative weekly chart profiles, which means investors trading these stocks should shift strategies to selling.

Amazon, Google and Netflix had huge price gaps higher following recent earnings reports but have fallen back to earth filling these gaps on their daily charts. All five are below their 50-day simple moving averages.

Here are the weekly charts for the five momentum stocks and the key levels at which to employ good till canceled limit orders to buy weakness to lower key technical levels and to sell strength to higher technical levels.

Here's the weekly chart for Apple.


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Apple had a close of $103.74 on Tuesday, down 6% year to date and 22.9% below its all-time intraday high of $134.54 set on April 28. The stock is below its 50-day and 200-day simple moving averages of $1121.73 and $121.54, respectively, with a "death cross" imminent.

Apple has a negative weekly chart with the stock below its key weekly moving average of $115.79 with risk to the 200-week simple moving average of $86.70, last tested during the week of June 28, 2013 when the average was $55.22. Apple's weekly momentum reading is projected to decline to 22.65 this week down from 24.61 on August 21.

Investors looking to buy Apple should place a good till canceled limit order to purchase the stock if it drops to $90.44, which is a key level on technical charts until the end of 2015.

Investors looking to reduce holdings should place a good till canceled limit order to sell the stock if it rises to $110.43, which is a key level on technical charts until the end of 2015, which was tested at the August 25 high of $111.11.

Here's the weekly chart for Amazon.com.


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Amazon.com had a close of $466.37 on Tuesday, up 50.3% year to date and 19.7% below its all-time intraday high of $580.57 set on July 24. The price gap to the July 23 high of $491.66 was filled this week. The stock is below its 50-day simple moving average of $483.28 which indicates risk to the 200-day simple moving averages of $394.01.

Amazon.com has a negative weekly chart with the stock below above its key weekly moving average of $488.31 with its weekly momentum reading projected to decline to 62.71 this week down from 69.80 on August 21.

Investors looking to buy Amazon.com should place a good till canceled limit order to purchase the stock if it drops to $443.56 and $424.87, which are key levels on technical charts until the end of September and the end of 2015, respectively.

Investors looking to reduce holdings should place a good till canceled limit order to sell the stock if it rises to $500.15, which is a key level on technical charts until the end of August.

Here's the weekly chart for Google.

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Google had a close of $612.47 on Tuesday, up 15.4% year to date and 14.1% below its all-time intraday high of $713.33 set on July 22. The price gap to the July 16 high of $604.50 was filled this week. The stock is below its 50-day simple moving average of $620.98 which risk to its 200-day simple moving average of $562.66.

Google has a negative weekly chart with the stock below its key weekly moving average of $630.97 with its weekly momentum reading projected to decline to 67.56 down from 69.89 on August 21. The downside risk is to the 200-week simple moving average of $459.76, which is the reversion to the mean last test at $249.87 during the week of Oct. 7, 2011.

Investors looking to buy Google should place a good till canceled limit order to purchase the stock if it drops to $591.96 and $526.68, which are key levels on technical charts until the end of August and the end of 2015, respectively.

Investors looking to reduce holdings should place a good till canceled limit order to sell the stock if it rises to $647.30 and $672.02, which are key level on technical charts until the end of September and the end of 2015, respectively.

Here's the weekly chart for Netflix.

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Netflix had a close of $101.52 on Tuesday, up 108% year to date and 21.5% below its all-time intraday high of $129.29 set on August 5. The stock is below its 50-day simple moving average of $106.87 which indicates risk too its 200-day simple moving averages of $75.67.

Netflix has a negative weekly chart with the stock below its key weekly moving average of $106.98 with its weekly momentum reading projected to slip to 71.79 this week down from 80.84 on August 21 moving below the oversold threshold of 80.00.

Investors looking to buy Netflix should place a good till canceled limit order to purchase the stock if it drops to $96.62, which is a key level on technical charts until the end of September. This level provided a buying opportunity on August 24.

Investors looking to reduce holdings should place a good till canceled limit order to sell the stock if it rises to $112.80, which is a key level on technical charts until the end of August.

Here's the weekly chart for Tesla.


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Tesla had a close of $220.03 on Tuesday down 1.1% year to date and 24.5% below its all-time intraday high of $291.42 set on Sept. 1, 2014. The stock is below its 50-day and 200-day simple moving averages of $258.64 and $229.36, respectively. Note the double-top for the stock.

Tesla has a negative weekly chart with the stock below its key weekly moving average of $244.01 with its momentum reading projected to decline to 32.69 this week down from 41.19 on August 21.

Investors looking to buy Tesla should place a good till canceled limit order to purchase the stock if it drops to $152.07, which is a key level on technical charts until the end of 2015.

Investors looking to reduce holdings should place a good till canceled limit order to sell the stock if it rises to $242.37, which is a key level on technical charts until the end of the week.

This article is commentary by an independent contributor. At the time of publication, the author held no positions in the stocks mentioned.