The recent repo anomaly appears to be a consequence of temporary conditions including corporate tax day, large treasury coupon settlement and dealer positioning. It does not reflect any fundamentals of the USD funding market. In short, nothing to see here.
I kept the non pro fee structure. IB understood exactly what the issue was so created the work around but the requirements are more than certain volume in past few months and greater than a threshold account size. Do not remember exactly what those levels were
One day last year I was suddenly cut out of US ETF's on IB. I could only place closing orders. My first option was to use IB's own CFD's which replicated the ETF bid/ask but of course there is the finance charge and credit risk there. So the other option due to the volume of trade and account...