For highly boosted top quarks (pT above ~TeV), its decay products become collimated.
Due to limited detector resolution commonly used jet substructure methods fail to work,
whereas charged tracks still offer the possibility for efficient top tagging. I briefly review
some standard top taggers and present recent development of the high-pT Top Tagger
(HPTTopTagger). This algorithm is based on the charged tracks inside a large-radius jet
and allows to probe new resonances in the multi-TeV range.