(Bloomberg) -- The S&P 500 has grown by $4 trillion since its December meltdown, and exchange-traded fund investors are betting there may be more room to run.

Investors poured more than $5.6 billion into the SPDR S&P 500 ETF Trust, known as SPY, last week, data compiled by Bloomberg show. The last time the world’s largest ETF saw inflows of this magnitude, U.S. stocks were on the cusp of a bear market in late 2018. But this time around, the cash infusion comes as the benchmark nears new highs.

Investors may be “looking at the headlines saying, ‘Well, maybe it’s got another 10 percent,”’ Delores Rubin, a senior equity trader at Deutsche Bank Wealth Management, said in an interview at Bloomberg’s New York headquarters. “People recognize growth is still there.”

Although stocks are already up 16 percent this year, fueling a temptation to bail and pocket the profits, the appeal to remain invested persists as earnings season gets underway. The first quarter should mark a bottom for the year, and Wall Street strategists are being forced to boost their year-end price targets or get left behind.

Growth stocks, which have helped fuel the record bull market, are also seeing renewed interest, capping three straight weeks of inflows in the period ending April 12, their longest streak since November, Bloomberg Intelligence data show. That puts growth funds on track for their best month of the year.

“Moving forward, we are just seeing an earnings slowdown and things are likely to re-accelerate into the back half of 2019,” said Jeff Schulze, investment strategist at ClearBridge Investments, which has about $142 billion in assets under management. “Recession isn’t on the horizon and global growth is likely turning.”

To contact the reporters on this story: Sarah Ponczek in New York at sponczek2@bloomberg.net;Vildana Hajric in New York at vhajric1@bloomberg.net

To contact the editors responsible for this story: Jeremy Herron at jherron8@bloomberg.net, Rachel Evans, Andrew Dunn

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