{"slug":"newsletters","boardTitle":"The Newsletter Platform Race","kind":"ath","day":"2026-07-29","dayNum":29,"headline":"Substack hits an all-time high.","subject":{"label":"Substack","sovPct":17.4},"rows":[{"rank":1,"label":"Ghost","sovPct":71.9,"isSubject":false},{"rank":2,"label":"Substack","sovPct":17.4,"isSubject":true},{"rank":3,"label":"beehiiv","sovPct":6.1,"isSubject":false},{"rank":4,"label":"Kit","sovPct":4.5,"isSubject":false}],"detail":{"athPct":17.4,"prevAthPct":16.8,"dayNum":29},"permalink":"https://xterminal.app/mindshare/newsletters/moments/2026-07-29-ath-substack","source":"XTerminal · xterminal.app/mindshare"}