Why would a company issue investment-grade bonds instead of (a) drawing a bank term loan or (b) issuing equity? Give the key tradeoffs for each comparison.

What interviewers are actually testing

DCM questions show up in markets-desk interviews, credit and coverage superdays, and any "walk me through how a company raises capital" prompt. The interviewer is checking four things.

First, do you understand the product? Can you explain, unprompted, that a bond's yield is a risk-free benchmark plus a credit spread quoted in bps, and that IG spreads are driven by downgrade/liquidity/technicals far more than by default probability? Getting the units right (bps, T+95, not "0.95 percent over") signals fluency.

Second, do you know the process? A strong candidate can narrate the arc from IPT → guidance tightening on an oversubscribed book → launch/pricing → break to trade, and can define new-issue concession and oversubscription correctly. Saying "the deal was 4x covered so they tightened 25 bps from IPTs and still broke a couple tighter" is exactly the register that lands.

Third, can you reason about issuance decisions? Why bonds vs loans (fixed/long/bullet vs floating/short/drawable)? Why debt vs equity (cheaper, tax-deductible, non-dilutive)? Why now (is the window open: where are spreads and rates vs history)? This connects DCM to capital structure and WACC, which interviewers love to bridge to.

Fourth, do you read the market? Know roughly where IG spreads sit (the index OAS, historically ~100–150 bps) and what a tight vs wide market implies for issuance volume. When spreads are tight and the window is open, treasurers rush to issue ("opportunistic" or "pre-funding" trades); when volatility spikes, the primary market shuts for days.

The fastest credibility signal: distinguish DCM (high-volume, thin-fee, IG, plain vanilla) from LevFin (high-margin, sub-IG, structured), and explain that banks run DCM partly as a relationship and cross-sell business rather than for the fee itself.

Common traps

Trap 1: Confusing DCM with leveraged finance. DCM classically means investment-grade, plain-vanilla bond issuance; LevFin handles sub-IG, structured, higher-margin debt (LBO term loans, high-yield bonds). They're different desks with different economics.

Say it out loud: "DCM is the high-volume, thin-fee, investment-grade bond business: plain-vanilla senior notes for blue-chip issuers. Leveraged finance is the sub-investment-grade, higher-margin, structured side: LBO term loans and high-yield bonds. Same 'debt' umbrella, very different desks."

Trap 2: Getting the spread/price direction backwards. When a deal's spread tightens during bookbuilding, the issuer is paying less. That's good for the issuer. When secondary spreads widen, existing bond prices fall.

Say it out loud: "Tighter spread means a lower yield and a higher price, so tightening during bookbuilding is the issuer winning. In secondary, wider spreads mean lower prices: spread and price always move opposite."

Trap 3: Thinking IG spreads are mostly about default risk. For an A-rated issuer, expected default loss is a rounding error. IG spreads are driven by downgrade risk, liquidity, and supply/demand technicals.

Say it out loud: "An A-rated company almost never defaults, so its spread isn't really paying for default losses: it's compensation for downgrade risk, liquidity, and the day's supply-demand technicals. That's why IG spreads move with fund flows and rate volatility, not just fundamentals."

Trap 4: Saying oversubscription means the issuer overpaid. Oversubscription (a book covered several times) is leverage for the issuer: it lets the syndicate tighten the spread. A hugely oversubscribed deal that still printed wide would be the mistake.

Say it out loud: "A 4x-covered book isn't the issuer overpaying. It's the opposite. Heavy demand lets the syndicate ratchet the spread tighter from IPTs, so oversubscription is exactly what lets the issuer lower its cost."

Trap 5: Believing a make-whole call is a cheap refinancing tool. Make-whole calls discount remaining cash flows at Treasuries plus a tiny spread, so the call price is almost always well above par: it exists to protect investors, not to let issuers refinance cheaply.

Say it out loud: "A make-whole call isn't a real refinancing option: it prices remaining payments at Treasuries plus a handful of bps, so it's punitively expensive. It's investor protection dressed up as a call; issuers only use it in special situations, not to chase lower rates."

Trap 6: Ignoring new-issue concession. Candidates forget that a new bond must price a touch cheap to existing bonds to clear. That premium (the NIC) is a live read on market health.

Say it out loud: "A new deal usually prints a few bps of concession to the issuer's existing curve so investors have a reason to buy the new paper. When that new-issue concession compresses toward zero, the market's hot; when it fattens, investors are demanding to be paid up to absorb supply."