What happened 

Shares of the Brazilian digital bank Nu Holdings (NU -1.18%) were spiking today on no company-specific news. Instead, it appears the company's stock price was gaining ground in response to broader optimism in the market today. 

The fintech stock was up by as much as 9.1% today and had gained 7.9% as of 1:26 p.m. ET.  

So what 

Many stocks were rallying today after the S&P 500 ended its worst month since March 2020 in September. The S&P 500 was up 2%, and the tech-heavy Nasdaq Composite gained 1.6% as of this writing. 

A person holding a phone and a cup.

Image source: Getty Images.

There wasn't any clear news that was driving share prices higher today, but investors may instead be assuming that the brutal share-price losses that the market has experienced over the past year are now reaching their bottom. 

Nu Holdings shareholders may be hoping that the worst may be over for the fintech stock despite high inflation and the Federal Reserve's commitment to raising rates in 2023. 

Nu investors have been generally pessimistic about the stock recently, with its share price down nearly 41% over the past six months.  

But the huge share-price declines in nearly all market sectors appears to be drawing in some investors who may be viewing the stock declines as a good buying opportunity. 

Now what 

While today's share-price gains are certainly a welcomed change for Nu's stock, shareholders should be cautious about getting too optimistic.

There's still a lot of uncertainty surrounding the global economy, and most federal banks across the globe are continuing to hike their interest rates. 

With inflation surging in the U.S. and investors still generally concerned about a significant economic slowdown, Nu's stock will likely remain volatile in the near term.