CWB vs ICVT

CWBAState Street SPDR Bloomberg Convertible Securities ETF

ICVTAiShares Convertible Bond ETF

In short

CWB Convertible bonds are the hybrids of corporate credit: debt that can turn into stock. CWB has packaged them since 2009, tracking a Bloomberg index tilted toward the market's tradable issues, and it pays monthly.

ICVT Convertible bonds are corporate debt with a stock option attached. ICVT owns the plain-vanilla slice (cash-pay bonds, big issues only) by index, at 0.20% a year, the lowest fee among the handful of convertible ETFs on the market.

Stated mandate

CWB The fund seeks to track the price and yield performance of the Bloomberg U.S. Convertible Liquid Bond Index before fees and expenses. It invests in qualifying U.S. convertible securities.

ICVT The fund seeks to track an index of U.S. dollar-denominated convertible bonds with issue sizes above $250 million.

Why people hold it

• CWB One holding, two jobs. Convertibles pay a coupon like bonds and convert into shares. You get roughly 400 of them for 0.40% a year, with distributions arriving monthly.
• The benchmark itself is picky about tradability: the Bloomberg U.S. Convertible Liquid Bond Index, as the name signals, leans toward the liquid end of a thinly traded market.
• Running since 2009 and now a multi-billion-dollar fund that trades actively. Tracking of its index has been tight, and the plumbing is among the sturdiest in its peer group.

• ICVT 0.20% a year, against a category median of 0.80%. The next-cheapest convertible ETF, CWB, charges 0.40%, and the active options in the group run 0.69% to 0.95%.
• Rules, not hunches: it follows the Bloomberg U.S. Convertible Cash Pay Bond >$250MM Index and has tracked it closely, with no manager discretion in the mix.ishares.com
• The index takes only cash-pay converts above $250 million in issue size, screening out zero-coupon, preferred and mandatory structures plus called and defaulted paper.sec.gov
• A multi-billion-dollar fund trading a few hundred bonds, running since 2015 and paying distributions monthly.

Worth knowing

• CWB Filed under fixed income, wired to equities. When the underlying stocks run, convertibles follow them up; when stocks sink, the swings look nothing like a core bond fund's.
• 0.40% is niche pricing. Broad index trackers in the same cohort run single-digit basis points (SCHK 0.03%, VT 0.06%), so you pay up for the convertible plumbing.
• Convertibles are a small corner of US credit. The investable pool is narrow (roughly 400 positions), so a handful of large issuers can shape the ride.

• ICVT Converts move with the issuer's stock. The bond floor cushions, but this behaves more like an equity-sensitive hybrid than a core bond fund.sec.gov
• Convertible issuers are often unrated or below investment grade, so credit risk sits inside the portfolio alongside the rate risk.ishares.com
• Cash-pay only means no convertible preferreds or mandatories, so it is a clean core slice rather than the entire convertible market.sec.gov

Full CWB profile⁠

Full ICVT profile⁠