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Ole Andreas Halvorsen

Viking Global Investors

Ole Andreas Halvorsen Adaptive Biotechnologies Corp stake

total: 652

Viking Global Investors ADPT trades

Total transactions:
3
New positions:
1
Reduced:
2
Held since:
2019 Q2
Held for:
28 quarters
Latest activity:
2020 Q4
According to 2026 Q1 report, Ole Andreas Halvorsen holds 29,993,708 Adaptive Biotechnologies Corp (ADPT) shares with a market value of roughly $416.31M accounting for 1.16% of the overall portfolio. To date, the estimated cost basis is nearly $48.3 for "buy" trades and estimated average "sell" price is $40.82. Viking Global Investors first purchased ADPT in 2019 Q2, initially acquiring about 38.41M shares. Since the initial investment in Adaptive Biotechnologies Corp (ADPT), Viking Global Investors has made 2 more transactions.

How many ADPT shares does Ole Andreas Halvorsen currently hold?

According to 2026 Q1 report, Ole Andreas Halvorsen holds 29,993,708 shares of Adaptive Biotechnologies Corp (ADPT), valued at around $416.31M.

When did Ole Andreas Halvorsen buy Adaptive Biotechnologies Corp (ADPT)?

Ole Andreas Halvorsen first invested in Adaptive Biotechnologies Corp (ADPT) in 2019 Q2 at the reported quarter-end price of $48.30 per share.

What's the cost basis of Viking Global Investors's ADPT stake?

The estimated cost basis for Adaptive Biotechnologies Corp (ADPT) stake is around $48.30 per share. This represents their average reported price* across all buy transactions

Estimated cost basis*

Weighted AVG buy price:
$48.30
Weighted AVG sell price:
$40.82

Ole Andreas Halvorsen's historical trades in Adaptive Biotechnologies Corp

3 results
Period % of
portfolio
Shares
held after*
Reported
price*
Value* % (shares)
of activity
% change
to portfolio
2020 Q4
4.88%
$59.13
-10.45% (-3,500,000)
2020 Q1
4.84%
$27.78
-12.79% (-4,912,899)
2019 Q2
8.32%
$48.30
new
* Shares, change to shares, sold shares, shares held after: split-adjusted.
* Reported price: this doesn't represent the actual buy or sell price. It is the split-adjusted price of the security as of the last day of the reported period.
If the security is completely sold out, we show the reported split-adjusted price prior to the actual period.
* Estimated cost basis: based on "Reported price*" (not earlier than 2013 Q2). Calculation starts from the latest "new buy" activity to the latest "close out" activity (if any).
* Value or Price: If the security is completely sold out, we show the reported value (or price) prior to the actual period.
* New buy or own: this means there is no earlier reporting (for us or in general). So we can't know if the actual purchase of the security happened at the reported period or earlier.