Shares of TG Therapeutics Inc. blasted off in very active trading Wednesday, after the biopharmaceutical company reported third-quarter results that were multiples above what was expected, as adoption of its multiple sclerosis treatment Briumvi “continues to grow.”

The stock TGTX shot up 26.7% in morning trading, which puts it on track for the biggest one-day gain since it ran up 63.4% on Nov. 10, 2022. Trading volume swelled to 24 million shares, compared with the full-day average over the past 30 days of about 4.3 million…