Is Pacific Biosciences of California (PACB) Stock a Buy For 2021? Baron Discovery Fund recently published its fourth-quarter commentary – a copy of which can be downloaded here. During the fourth quarter of 2020, the Baron Discovery Fund returned 25.54% (institutional shares). This was 4.07% lower than the Russell 2000 Growth Index, the Fund’s primary benchmark index. You should check out Baron Discovery Fund’s top 5 stock picks for investors to buy right now, which could be the biggest winners of 2021. In the Q4 2020 Investor Letter, Baron Discovery Fund highlighted a few stocks and Pacific Biosciences Of California Inc. (NASDAQ:PACB) is one of them. Pacific Biosciences Of California Inc. (NASDAQ:PACB) is a biotechnology company. In the last three months, Pacific Biosciences Of California Inc. (NASDAQ:PACB) stock gained 182% and on February 1st it had a closing price of $34.18. Here is what Baron Discovery Fund said: