What is an ETF?
An ETF (Exchange-Traded Fund), or tracker, is a fund listed on an exchange that seeks to replicate the performance of an index (equities, bonds, a sector...) rather than beat it. It trades continuously, like a stock.
How it works
An ETF holds a basket of securities meant to mirror its reference index's composition (or an approximation of it). Some ETFs use physical replication (direct holding of the securities) and others synthetic replication (via derivatives) — both approaches carry different counterparty-risk implications.
Benefits
Key takeaway
They are widely used to build a diversified allocation without picking each security individually.
Risks and fees
An ETF remains exposed to the same market risks as its underlying index: its value can fall. Ongoing fees (TER) reduce net performance over time, even though they generally stay moderate.
Attention
Reading an ETF's factsheet
A few details identify an ETF precisely: its ISIN code (unique for each share class), the tracked index, the replication method, how dividends are handled (accumulating ETFs reinvest them, distributing ETFs pay them out), the trading currency and the ongoing charges. They are listed in the issuer's key information document.
In PortefeuilleZen, an ETF is identified by its ISIN and trading venue, never by its name alone.