Peloton Interactive (PTON 5.60%) stock is making big gains in Monday's trading. The company's share price was up 7.5% as of 2:45 p.m. ET, according to data from S&P Global Market Intelligence. On Friday, Morgan Stanley and Capital World Investors submitted filings to the Securities and Exchange Commission (SEC) disclosing their updated holdings in Peloton as of late December. Morgan Stanley's SC 13G/A filing showed that it had reduced its position in the stock, while Capital World Investors showed that it h ...