By Amanda Cooper and Samuel Indyk

LONDON, April 19 (Reuters) - The U.S.-Iran ceasefire in early April appears to have revived so-called TINA ("There Is No Alternative") trades, driven by peace hopes, soaring U.S. earnings growth and the relative insulation of the world's biggest economy to an energy shock.

Over the last year, investors, particularly in the United States, had sought out cheaper ‌markets abroad where returns were juiced up by a weaker dollar. Enthusiasm over the AI boom and expansive government spending has also boosted equities, from Seoul and Tokyo to Frankfurt and ‌London.

The war and ensuing surge in energy prices hurt confidence and risk markets. But U.S. President Donald Trump's April 7 ceasefire announcement has sent Wall Street shares to record highs again.

Global investors have poured a net $28 billion into U.S. equities since the eve ​of the ceasefire announcement, with U.S. investors alone accounting for nearly $23 billion of that total, according to LSEG/Lipper data.

Until that point in the year, they had pulled a net $56 billion out of U.S. stocks, including a net outflow of almost $90 billion by U.S.-based investors.

The ceasefire has sharpened focus on which markets have the strongest outlook, and early signals from earnings season suggest the U.S. remains robust.

While most major equity markets have erased their war-driven losses, the S&P 500 is 2% above pre-war levels.

"We've had our fourth exogenous shock in six years and given the nature of the shock, it's not surprising that we go back to the economy that has performed the best ‌over the very long-term, is investing the most in the short-term and ⁠is producing the best set of results," said Michael Browne, global investment strategist at the Franklin Templeton Institute in London.

"TINA" prevailed for years as U.S. shares climbed to record highs but suffered a setback around the January 2025 start of Trump's second term, with investors pivoting to a "TIARA" trade - "There Is A Real Alternative" - that favoured ⁠Europe and emerging markets in particular.

Source: Drudge Report