Elliott Management, an activist investment firm, has increased its stake in Global Payments Inc. (ticker: GPN) following the company's recent Worldpay acquisition. This move has driven Global Payments' shares up by approximately 6% in after-hours trading. Reports indicate that Elliott's ownership in Global Payments has climbed above 8%. Separately, Elliott Management has also expanded its position in Equinix Inc. (ticker: EQIX), a data center real estate investment trust, and is encouraging the company to take measures to enhance its share price. Equinix's shares rose about 3.5% in pre-market trading following the announcement of Elliott's increased stake.