The S&P 500 fell on Tuesday amid selling in Big Tech and other high-growth stocks, erasing the benchmark’s strong start to the month.

The broad market index closed the session 0.7% lower at 4,164.66 after dropping 1.5% at its low. The S&P 500 wiped out Monday’s gains, dropping 0.7%.

Plan A : Long if market supported firm above 4165. Targets are 4181, 4195 and 4212.

Plan B : Short if market failed to support above 4165. Targets are 4140, 4114 and 4088. 

U.S. stock futures were flat in overnight trading on Tuesday following a session defined by major weakness in technology stocks.

Pressure on some of the globe’s largest technology  companies sent the Nasdaq Composite down 1.9% to 13,633.50 for its worst day since March.

Apple, the largest publicly traded company in the U.S., fell 3.5%. Google-parent Alphabet lost 1.6%, Facebook shed 1.3% and electric car maker Tesla dropped 1.7%. Investors did not spare the market’s chipmakers, with Nvidia and Intel losing 3.3% and 0.6%, respectively.

There are a number of possible reasons for the downward pressure, including fears about rising inflation, concerns the Federal Reserve may have to taper monetary stimulus earlier than telegraphed, and the potential for tax hikes in the months ahead.

Plan A : Short if market failed to support above 13575. Targets are 13533, 13489 and 13449.

Plan B : Long if market supported firm above 13575. Targets are 13605, 13637 and 13675.