Article content (Bloomberg) — Syndicate desks expect another subdued week in the investment-grade bond primary market, calling for $15 billion to $20 billion of fresh supply as earnings season ramps up into full gear. High-yield bond sales, meanwhile, are likely to stay active amid a refinancing wave that’s enabled some covid-hit companies to slash borrowing costs. Just $10.6 billion of high-grade bonds priced this week, making it the second slowest of the year, according to data compiled by Bloomberg. Among the expected line up for next week’s business is financial issuance from regional banks, along with more from corporates after they report.