Turkish firm Tera Portfoy says it is working to repay investors amid liquidation investigation ↧ ↧ Turkish firm Tera Portfoy says it is working to repay investors ami... Tera Portfoy , a Turkish portfolio management firm under investigation after some investment funds defaulted ‌on redemption requests, said on Sunday it had repaid some investors and was working to repay others but that restrictions imposed by authorities were delaying the process.