By Medha Singh and David Randall

(Reuters) -Resurgent risk appetite among some investors is fueling rallies in the shares of so-called meme stocks after a crushing year for equities.

Notable moves include a more than 70% surge since the start of January in the shares of Bed Bath & Beyond. The company’s shares hit a three-decade low last week when the retailer warned it could seek bankruptcy protection.

The retailer's shares were recently down more than 15% on Friday. The New York Times reported the company is in talks with private equity firm Sycamore Partners for the sale of its assets as part of a possible bankruptcy process.

Carvana Co shares, meanwhile, are up nearly 45% this month amid heavy short interest, while shares up Revlon Inc are up 11%. Shares of older meme stocks have joined in the rally, with GameStop Corp up nearly 11% and AMC Entertainment Holdings Inc up nearly 23%.

A 1,600% rise in shares of GameStop in early 2021 first put the spotlight on meme stocks and the retail investors that helped drive many of their rallies as they coordinated in forums such as Reddit’s WallStreetBets. Though many of those initial rallies have since sputtered, meme stocks have seen a number of short-lived rebounds since then, often coinciding with resurging risk appetite in broader markets.

Signs of easing inflation that some investors believe may push the Federal Reserve to end its rate increases sooner than projected appear to be contributing to the latest moves in meme stocks while also helping push up the S&P 500, which is up 3.5% this year. The index fell more than 19% in 2022.

"When we get a little bit of easing in inflation expectations … risk appetite comes back on and retail investors tend to pile into [meme stocks] in hopes of this lottery-like payoff," said Garrett DeSimone, head of quantitative research at OptionMetrics.

Meanwhile, the Cboe Volatility Index, known as Wall Street’s fear gauge because it reflects demand for downside protection, was recently at 18.1, its lowest level since Jan '22.

"The rally in risk assets has carried meme stocks in its wake," said Jason Benowitz, senior portfolio manager at CI Roosevelt.

Also, “investors who sold for tax reasons in late 2022 might be reinvesting in early 2023," he said.

Analysts at Vanda Research noted that January and February tend to be among the strongest months for retail inflows.

“Moreover, retail investors tend to rev up their purchases heading into the earnings reporting season, as heightened volatility presents more opportunities for attractive returns,” Vanda’s analysts wrote.

Market participants are quick to warn that similar rallies in meme stocks - as well as broader markets - have crumbled in the last year. GameStop shares are down more than 75% from their peak, while Bed Bath & Beyond shares, which surged to above $20 last year, quickly reversed those gains. A number of bounces in the S&P 500 last year also crumbled.

Despite the renewed buying from retail investors, "the hurdle to reach previous net-flow highs looks difficult, and any meme stock mania is poised to be short-lived, in our view," Vanda analysts wrote.

(Reporting by Medha Singh in Bengaluru; Editing by Chizu Nomiyama and Aurora Ellis)