Catherine Wood's PACB Position Overview
Catherine Wood (via Ark Investment Management LLC) currently holds 36.27 M shares of Pacific Biosciences of California, Inc. (PACB) worth $47.88 M, representing 0.37% of the portfolio. First purchased in 2017-Q4, this long-term strategic position has been held for 33 quarters.
Based on 13F filings, Catherine Wood has maintained a strategic position in PACB, demonstrating sustained confidence in this investment. Largest addition occurred in Q3 2020, adding 11.61 M shares. Largest reduction occurred in Q4 2018, reducing 7.79 M shares.
Analysis based on 13F filings available since 2013 Q2
Catherine Wood's Pacific Biosciences of California (PACB) Holding Value Over Time
Track share changes against reported price movement
Quarterly Pacific Biosciences of California (PACB) Trades by Catherine Wood
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | -990,940 | Reduce 2.66% | 36.27 M | $1.32 |
| Q4 2025 | +6.34 M | Add 20.50% | 37.26 M | $1.87 |
| Q3 2025 | -5.37 M | Reduce 14.81% | 30.92 M | $1.28 |
| Q2 2025 | -180,278 | Reduce 0.49% | 36.3 M | $1.24 |
| Q1 2025 | +434,079 | Add 1.20% | 36.48 M | $1.18 |
| Q4 2024 | +2.64 M | Add 7.90% | 36.04 M | $1.83 |
| Q3 2024 | +193,947 | Add 0.58% | 33.41 M | $1.70 |
| Q2 2024 | -77,683 | Reduce 0.23% | 33.21 M | $1.37 |
| Q1 2024 | -1.21 M | Reduce 3.52% | 33.29 M | $3.75 |
| Q4 2023 | +4.68 M | Add 15.70% | 34.5 M | $9.81 |
| Q3 2023 | +3.19 M | Add 11.97% | 29.82 M | $8.35 |
| Q2 2023 | -1.12 M | Reduce 4.03% | 26.63 M | $13.30 |
| Q1 2023 | +2.06 M | Add 8.03% | 27.75 M | $11.58 |
| Q4 2022 | -3 M | Reduce 10.46% | 25.69 M | $8.18 |
| Q3 2022 | +646,964 | Add 2.31% | 28.69 M | $5.81 |
| Q2 2022 | +786,009 | Add 2.88% | 28.05 M | $5.63 |
| Q1 2022 | +876,418 | Add 3.32% | 27.26 M | $9.10 |
| Q4 2021 | +3.66 M | Add 16.11% | 26.38 M | $20.46 |
| Q3 2021 | +2.24 M | Add 10.94% | 22.72 M | $25.55 |
| Q2 2021 | -819,705 | Reduce 3.85% | 20.48 M | $34.97 |
| Q1 2021 | -7.2 M | Reduce 25.27% | 21.3 M | $33.31 |
| Q4 2020 | +8.66 M | Add 43.64% | 28.5 M | $25.94 |
| Q3 2020 | +11.61 M | Add 141.08% | 19.84 M | $9.87 |
| Q2 2020 | +4.04 M | Add 96.31% | 8.23 M | $3.45 |
| Q1 2020 | +2.68 M | Add 177.79% | 4.19 M | $3.06 |
| Q4 2019 | +752,617 | Add 99.45% | 1.51 M | $5.14 |
| Q3 2019 | +756,797 | New Buy | 756,797 | $5.16 |
| Q1 2019 | -590 | Sold Out | 0 | $0.00 |
| Q4 2018 | -7.79 M | Reduce 99.99% | 590 | $6.78 |
| Q3 2018 | +1.47 M | Add 23.18% | 7.79 M | $5.41 |
| Q2 2018 | +2.04 M | Add 47.53% | 6.32 M | $3.55 |
| Q1 2018 | +4.07 M | Add 1902.97% | 4.28 M | $2.05 |
| Q4 2017 | +213,917 | Add 0.00% | 213,917 | $2.64 |
Catherine Wood's Pacific Biosciences of California Investment FAQs
Catherine Wood first purchased Pacific Biosciences of California, Inc. (PACB) in Q4 2017, acquiring 213,917 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Catherine Wood has held Pacific Biosciences of California, Inc. (PACB) for 33 quarters since Q4 2017.
Catherine Wood's largest addition to Pacific Biosciences of California, Inc. (PACB) was in Q3 2020, adding 19,844,780 shares worth $195.87 M.
According to the latest 13F filing for Q1 2026, Catherine Wood's firm, Ark Investment Management LLC, owns 36,273,288 shares of Pacific Biosciences of California, Inc. (PACB), valued at approximately $47.88 M.
As of the Q1 2026 filing, Pacific Biosciences of California, Inc. (PACB) represents approximately 0.37% of Catherine Wood's publicly disclosed stock portfolio, making it one of their key holdings.
Catherine Wood's peak holding in Pacific Biosciences of California, Inc. (PACB) was 37,264,228 shares, as reported at the end of Q4 2025.