The S&P 500 I:GSPC is divided into 11 sectors, each one is traded using its own exchange-traded fund. The technology sector ETF set an all-time intraday high on March 21, while the energy sector set its post-election low on March 27. The dividend-rich utility sector ETF set its post-election high on March 22, but this "flight to safety" investment choice slipped last week.

The REIT ETF, which set its post-election high on Feb. 27, hit its 2017 low on March 10 and has since stabilized.

The Financial ETF set its post-election high on March 2, still has the strongest gain since the election, but has lagged so far in 2017.

The S&P 500 peaked on March 1, as the infrastructure-spending ETFs, materials, industrial and transportation peaked at the same time.

The consumer discretionary ETF peaked on March 31, while the consumer staples sector ETFs peaked on March 15, as the Federal Reserve hiked the federal funds rate on the Ides of March.

The health care sector peaked on March 15, anticipating the battle that currently rages over Republican plans to repeal and replace Obamacare.

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