"huge upswing" is correct and usable in written English.
You can use it to describe a large or dramatic increase in something. For example, "After the introduction of new technology, the company saw a huge upswing in profits."
The reality is, Season 4 is on a huge upswing.
The price of oil became very stable, until, bang, there was this huge upswing in oil.
The current-account deficit was caused largely by a huge upswing in investment rather than by consumer spending.
According to the North Carolina NAACP, between 2008 and 2012, North Carolina had a huge upswing in black voting.
"Marketers want to make it look like there's a huge upswing when we are not hearing that at all," Mr. Wharton said.
It's a huge upswing but it started from a low base". As in other parts of Africa, however, the growth is not necessarily shared.
Polls conducted in Pakistan and Indonesia after American disaster assistance reveal huge upswings in the perception of the United States.
The problem has been that the two notes – one issued by Credit Suisse and one by Barclays – have experienced huge upswings in price, followed by equally large downswings.
Aside from China's effect on U.S. financial markets, California could also be more exposed to a slowdown in Chinese consumption than other parts of the country — given the huge upswings in tourism and real estate investments from China.
If we could lift our eyes from the financial chaos, Fleck argues, we would see that the world is at the start of a huge technological upswing.
You can catch huge price upswings if you are able to time your trades correctly.
