Brokers recorded a hefty 69.3% increase in government lending from the first to the second quarter, boosting their share of the sector to 21.4%.

The aggregate SFO balance, mostly tied to mortgage-backed securities trusts, was down 0.8% from March, the second quarterly decline in a row.

Most of the increased GSE refi business came from rate-term deals. Delivery of these loans increased 88.6% from July to August…