SEC Chair Atkins wants staff to cut back on data private fund advisors must report.  
The deadline for new reporting rules is pushed from June 12 to October 1.  
Limited data collection could benefit hedge funds and PE firms more.  
Atkins questions if Trump-era data use justifies the heavy burden.  
He’s ordered a full review of expanded reporting under ex-Chair Gensler.  
Fund advisors cited tech challenges ahead of this week’s original deadline.  
SEC staff noted many funds hadn’t even starte