The move follows a disastrous two-year stretch of stock-market calls by Kolanovic.
Big Tech should continue dominating the market even if profits slow, he said.
Stifel's Barry Bannister thinks the index could shed a fifth of its value by mid-2026.
The firm expects "healthy earnings growth" as the Fed ends its money-tightening campaign.
Citi says stock gains could move beyond the megacap tech names.
The senior portfolio manager says investors still have cash to put to work.
The firm's chief US equity strategist predicted “roughly a flat return from now until the end of the year.”
The S&P 500 has recouped the bulk of its losses from last month's rout.
Strategist Marko Kolanovic and his team have been among a small group of bearish contrarians on Wall Street this year.
The S&P 500 is on track for a third straight week of declines.