Crypto mining giant Bitmain may be losing its advantage in developing miners amid other potential cash-flow issues, according to a new report.

Analysts with research firm Alliance Bernstein said the company's "cash flow appears to be questionable and the company may be gradually losing technological edge" in a report published Wednesday. The researchers note that Bitmain's revenue in 2017 fell below estimates after the company stored a large number of its miners' components, rather than selling to customers, although its revenue still remained "remarkably high" for that year.

Further, even though Bitmain dominated the mining device market with "77 percent unit share in bitcoin and ~85 percent in all cryptocurrencies last year," declining cryptocurrency prices reduced some of that revenue stream.

The bear market also impacted Bitmain's holdings. The company holds roughly 5.7 percent of the total supply of bitcoin cash, which Bernstein says was "likely" acquired using its operating cash and bitcoin holdings.

"These BCH holdings, valued at U.S. $890 million as of [Q1 2018], poses another major risk as BCH is illiquid and has depreciated nearly 20 percent since [Q1 2018]," the report notes.

The company's problems also extend to its own crypto mining projects. The report states that, last year, Bitmain's advantage in mining rigs ensured it could fund projects with customer deposits, and saw roughly $1.3 billion in cash flow. However, as the price dropped early this year, customer deposits also slumped, and Bitmain was "forced to draw from its operating cash flow" in Q1 2018.

The report argues:

The publication comes after two of the firm's reported pre-IPO round investors – though the claim did not come from Bitmain itself – told CoinDesk that they were not actually involved in the funding effort. Both Tencent Holdings and SoftBank group said they were not investing in the company, with SoftBank adding that it had not invested in the company previously, either.

Bitmain is seeking potentially as much as $18 billion in its IPO later this year. If successful, the company could see a market capitalization as high as $50 billion after the IPO concludes.

Read the full report below:

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