Andreas Halvorsen's ADPT Position Overview
Andreas Halvorsen (via Viking Global Investors Lp) currently holds 29.99 M shares of Adaptive Biotechnologies Corporation (ADPT) worth $448.71 M, representing 1.17% of the portfolio. First purchased in 2019-Q2, this long-term strategic position has been held for 26 quarters.
Based on 13F filings, Andreas Halvorsen has maintained a strategic position in ADPT, demonstrating sustained confidence in this investment. Largest reduction occurred in Q1 2020, reducing 4.91 M shares.
Analysis based on 13F filings available since 2013 Q2
Andreas Halvorsen's Adaptive Biotechnologies Corporation (ADPT) Holding Value Over Time
Track share changes against reported price movement
Quarterly Adaptive Biotechnologies Corporation (ADPT) Trades by Andreas Halvorsen
| Period | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q2 2019 | +38.41 M | New Buy | 38.41 M | $48.30 |
| Q1 2020 | -4.91 M | Reduce 12.79% | 33.49 M | $27.78 |
| Q4 2020 | -3.5 M | Reduce 10.45% | 29.99 M | $59.13 |
Andreas Halvorsen's Adaptive Biotechnologies Corporation Investment FAQs
Andreas Halvorsen first purchased Adaptive Biotechnologies Corporation (ADPT) in Q2 2019, acquiring 38,406,607 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Andreas Halvorsen has held Adaptive Biotechnologies Corporation (ADPT) for 26 quarters since Q2 2019. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Andreas Halvorsen's largest addition to Adaptive Biotechnologies Corporation (ADPT) was in Q2 2019, adding 38,406,607 shares worth $1.86 B. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
According to the latest 13F filing for Q3 2025, Andreas Halvorsen's firm, Viking Global Investors Lp, owns 29,993,708 shares of Adaptive Biotechnologies Corporation (ADPT), valued at approximately $448.71 M. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
As of the Q3 2025 filing, Adaptive Biotechnologies Corporation (ADPT) represents approximately 1.17% of Andreas Halvorsen's publicly disclosed stock portfolio, making it one of their key holdings. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Andreas Halvorsen's peak holding in Adaptive Biotechnologies Corporation (ADPT) was 38,406,607 shares, as reported at the end of Q2 2019. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.