By Noel Randewich

(Reuters) - Shares of Trump Media & Technology Group, majority-owned by former U.S. President Donald Trump, jumped nearly 5% on Monday after a poll showed the Republican candidate is in a tight race against Vice President Kamala Harris for the White House.

The bounce in the company's stock follows weeks of declines that sent it to record lows, and it comes ahead of key dates this month when Trump and other company insiders will be allowed to sell their shares.

Trump Media, whose main asset is the Truth Social app, saw its value balloon to nearly $10 billion following its stock market listing in March, lifted in part by Trump supporters and traders betting he would win the November election.

Monday's rebound in Trump Media follows a new poll suggesting recent gains by Democratic rival Harris against Trump have stalled and potentially reversed.