CPS Technologies is trading 7.7% higher in pre-market at $3.98, compared with the $3.69 September 28 close; no verified company announcement or other clear catalyst dated September 29 explains the gain. - The move reverses the prior session’s 4.16% decline. - Available coverage of earlier company developments does not establish a connection to the move, while broader market indicators are mixed and do not clearly account for the rise.