01:44 PM EDT, 10/21/2024 (MT Newswires) -- Siyata Mobile ( SYTA ) said Monday its 5G push-to-talk cellular radios, SD7 Ultra series, will be available on T-Mobile's (TMUS) 5G network.

Siyata shares surged 73% as intraday trading volume climbed to more than 111.2 million from a daily average of about 999,000.

Spirit Airlines ( SAVE ) climbed 56% amid heavy trading after the budget carrier said in a regulatory filing late Friday that it secured a debt-refinancing extension.

More than 71.1 million shares traded intraday compared with a daily average of about 5.34 million.

Viad ( VVI ) said Monday it agreed to sell its GES business to Truelink Capital for $535 million.

Shares jumped 17%, with intraday trading volume at over 686,000 compared with a daily average of about 98,000.

Price: 1.75, Change: +0.74, Percent Change: +73.27