GlaxoSmithKline plc (GSK)
With $41 in the rearview mirror, GSK just opened up some material downside risk this week.

AES Corp. (AES)
AES is a sell if shares violate $11 support.

Manhattan Associates Inc. (MANH)
MANH's descending triangle pattern triggers a sell if shares dip materially below $48.

EnerSys (ENS)
The downtrend in EnerSys is still in play this spring - avoid the temptation to buy the recent move higher.

Read Full Article: 4 Stocks Are Showing Red Flags -- Here's When to Sell

This article was written by a staff member of TheStreet.

More from Video

Bank of America, Tariffs and the Goldman Sachs CEO Change: Jim Cramer Rewind

Bank of America, Tariffs and the Goldman Sachs CEO Change: Jim Cramer Rewind

Lee Munson on the Market, Trade and the Possibility of a Recession

Lee Munson on the Market, Trade and the Possibility of a Recession

What's My Data Doing in the Cloud? -- 60 Seconds

What's My Data Doing in the Cloud? -- 60 Seconds

Here's Why Alphabet, Facebook and Amazon Earnings May Overshadow Tariff Worries

Here's Why Alphabet, Facebook and Amazon Earnings May Overshadow Tariff Worries

NYSE Trader Expects Blowout Earnings From Alphabet, Amazon and Facebook

NYSE Trader Expects Blowout Earnings From Alphabet, Amazon and Facebook