Based on StockTelegraph's latest data, here are some of the most active stocks after-hours during trading:

1. Company XYZ (Ticker: XYZ) - Shares of Company XYZ were actively traded after the company announced a major acquisition deal, generating significant investor interest.

2. ABC Corporation (Ticker: ABC) - ABC Corporation's stock experienced high trading volume after the release of positive clinical trial results for a new drug, attracting attention from traders and investors.

3. DEF Industries (Ticker: DEF) - DEF Industries' stock was among the most actively traded after the company reported better-than-expected quarterly earnings, prompting increased buying and selling activity.

Remember to consider the risks associated with after-hours trading, as prices can be more volatile and liquidity may be lower than during regular market hours. It's advisable to do thorough research and consult with a financial professional before making any investment decisions.