The bull run for U.S. markets became the longest ever last week, turning 3,453 days old on Aug. 22.

In the time since the current bull run began, many financial conditions in the markets have changed. Meanwhile, the and the Nasdaq composite ended the previous trading week in record-high territory.

Markets stateside continued their upward trend last week despite news of legal concerns encircling U.S. President Donald Trump and his team. Last week, Trump's former personal lawyer and his one-time campaign chairman were both revealed to be guilty of crimes.

Meanwhile, some are concerned the bull run could be in its final days. They're worried about markets overheating and geopolitics hitting investors, so they're looking for ways to protect portfolios.