Several small- and mid-cap stocks posted notable gains in Wednesday's after-hours trading session, even though most companies did not release fresh news. The movement was largely driven by investor sentiment and sector momentum.Spyre Therapeutics, Inc. (SYRE) closed the after-hours session at $34.71, rising $1.65 or 4.99 percent as of 6:47 PM EST. Despite the absence of new company updates, the stock attracted strong interest from investors and led the list of gainers.The Oncology Institute, Inc. (TOI) end ...