U.S. technology and space-themed stocks edged higher after the Aug. 27 session, with Nvidia-linked NVDA and SpaceX-linked SPCX concept tokens seeing active trading. Gate data showed NVDA at $209.95 before reaching $219.59 after hours, a 4.59% gain, while SPCX rose from $139.57 to $140.52, up 0.68%. Coinglass data showed Gate NVDAX contracts had $10.44 million in open interest and $25.18 million in trading volume, both ranking first among centralized exchanges. Gate SPCX contracts had $112 million in open interest, ranking second, and $135 million in trading volume, ranking third.