Tsipras remains defiant on creditor demands. Related posts: UPDATE 1-Deutsche Post eyes 1 bln euro profit lift in 2016 Dow, S&P 500 both finish little-changed; Nasdaq closes off 0.3% at 4,662 BRIEF-Apple hires former tesla engineer Chris Porritt to electric car team- FT Nikkei turns negative after news of possible nuclear test by N.Korea Post navigation GBP/USD: short-term technicals bearish – Scotiabank Lennar up 1.8%, PulteGroup rises 1.6%, D.R. Horton 1.6% higher