IE vs US domiciled funds (VWRL vs VT)

As you said: That’d be (unwarrantedly) taking the logic to its extreme. :wink:

VWRL is a reasonable, albeit not perfect substitute for VT. TSLA is not. So why shouldn’t we compare them head-to-head? As the popular saying goes: Nobody knows what (perpetual under- or overperformance of small caps) the future holds anyway.

Small caps seem to have underperformed by about 2.5% in total over the last five years in developed markets (yes, VT isn’t only developed markets, but it doesn’t make a substantial difference).

Top 10 largest constituents make up 13.7% of VT and 14.52% of VWRL.
So the share of small caps is small. As will bethe overall difference they make.