The Nasdaq Composite (NASDAQINDEX:^IXIC) has been doing very well in recent months, rising to set dozens of new record closing highs. On Friday, Nasdaq investors decided it was time for a pause, as the benchmark fell about half a percent just before 3 p.m. EST.

However, some individual Nasdaq stocks managed to post huge gains on Friday. In the biotech industry, Sorrento Therapeutics (NASDAQ:SRNE) and Bionano Genomics (NASDAQ:BNGO) both more than doubled shareholders' money in 2020. But they haven't let up steam, and they're looking to build on their past stock-price appreciation and deliver more profits for their investors. Indeed, one of those stocks has already doubled again in 2021 because of Friday's big rise.

BNGO Chart

BNGO data by YCharts.

Investors hope for continued Sorrento success

Shares of Sorrento Therapeutics were up another 19% on Friday. Investors have been optimistic about the biotech's lineup of COVID-19-related products, which include prospective vaccines, treatments, and diagnostic tests.

The latest catalyst for Sorrento's share-price gains appeared to come from repeated comments from a bullish stock analyst at H.C. Wainwright. Wainwright has had a buy rating on the stock for a long time and raised its target price on Sorrento to $30 per share in late July 2020 on hopes that the COVI-TRACE saliva-based COVID-19 diagnostic test would prove to be a game changer in detecting the disease. Since then, Sorrento has filed for emergency-use authorization for its COVI-STIX shallow-nasal swab quick-test.

Researcher in lab coat looking at microscope, with vials nearby.

Image source: Getty Images.

Sorrento's stock climbed 102% in 2020 and added another 40% so far this year, but that has many investors getting impatient about the slow pace of progress toward getting actual approvals from regulators. The company is well behind many of its rivals, and it's unclear how much market share Sorrento would be able to win over, even if it gets some of its products approved.

For now, shareholders will be watching closely to see if the U.S. Food and Drug Administration (FDA) moves forward with emergency-use authorization for COVI-STIX. A win at the FDA could put some investors' minds more at ease about Sorrento's future.

A double-double for Bionano

Meanwhile, Bionano Genetics climbed 14% on Friday afternoon. After a nearly 150% rise in 2020, today's gains bring Bionano's return in the first two weeks of 2021 to nearly 160%.

The past couple of weeks have been momentous for Bionano. Its four-day symposium on next-generation cytogenomics has revealed a lot of information about the company, introducing many investors to its Saphyr optical genome mapping system. Bionano also managed to raise cash in a secondary stock offering, selling 29 million shares at $3.05 per share, to bring in $88.5 million. Participants in the secondary offering are already sitting on gains of more than 150% on their shares.

Bullish investors are optimistic about Bionano's potential to treat disease. For instance, one study looked at the genes that can indicate the risk of autism spectrum disorder, as well as revealing multiple variants that could help scientists with future breakthroughs.

Nevertheless, seeing a stock rise 15 times just since mid-December will inevitably have some thinking that Bionano needs to see a big correction. That might well happen, but even a substantial share-price pullback wouldn't necessarily mean that the future for Bionano's business doesn't look bright.