[mlevental]

very few people on hn actually know about quantitative finance - so they co-opt folk wisdom in order to be dismissive. all quant firms are secretive - it's not like de shaw or jane street or two sigma publish white papers. rentech has been successful for decades. if they were doing it using inside info they would've been caught a long time ago.

[ordinaryperson]

Bernie Madoff began his Ponzi scheme in the early 1970s (source: https://www.forbes.com/sites/johnwasik/2012/10/03/inside-the...)

He ran a scam for almost 40 years right under the nose of regulators and Wall Street.

Rentech may 100% legit, but absence of criminal convictions is not proof.