Top Stock Gainers: Stablecoin Development, Armada Acquisition, and Other Market Movers on October 2, 2026

• Stablecoin Development Corp. (AMEX: SDEV) experienced a significant surge, trading above its 50-day moving average, though a specific catalyst was not identified.
• Armada Acquisition Corp. II (NASDAQ: XRPN) jumped after shareholder approval of its merger with Evernorth, with the transaction nearing completion.
• Cable One (NYSE: CABO) and MaxLinear (NASDAQ: MXL) also posted strong gains, with Cable One supported by financing discussions and MaxLinear rising ahead of its upcoming earnings call.

On October 2, 2026, top listed gainers posted strong advances, though the available information does not identify clear news catalysts for every move. Stablecoin Development Corp. (AMEX: SDEV) surged 104.4% to $7.48, with approximately 137.6 million shares traded. Its shares moved above the $1.11 50-day moving average, a measure of the average closing price over the past 50 trading days. 

Armada Acquisition Corp. II (NASDAQ: XRPN) jumped 68.2% to $39.42 on about 9.1 million shares. Shareholders approved its combination with Evernorth on September 30. The transaction and related private placements have raised more than $1 billion, including about $300 million in expected gross cash proceeds. Evernorth expects to hold approximately 473 million XRP at closing. The deal is expected to close on October 7, with Nasdaq trading under Armada Acquisition Corp. II expected to start October 8.

Picard Medical (NASDAQ: PMI) climbed 33.8% to $5.78. The company commercializes medical devices, including the SynCardia total artificial heart. Kuehn Law is investigating whether certain officers and directors breached their duties to shareholders; the investigation is not a finding of wrongdoing. 

Cable One (NYSE: CABO) gained 17.9% to $12.21, with roughly 1.4 million shares traded. The telecommunications provider offers broadband, video, and voice services. Cable One said it is in advanced discussions with GTCR and other parties about financing transactions, though no final terms were provided. MaxLinear (NASDAQ: MXL), a maker of communications-system chips, rose 15.0% to $105.93 on approximately 4.8 million shares. MaxLinear scheduled a call to discuss third-quarter 2026 results for October 22 at 1:30 p.m. Pacific time.

Overall, Armada Acquisition Corp. II has a shareholder-approved transaction with a stated timeline, while Cable One has disclosed financing discussions. The available information does not establish that these developments directly caused each share-price gain.