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ATYR in the 13F filings

Atyr Pharma Inc · CUSIP 002120202

Sector · Pharmaceuticals and biotechnologyTheme · Biological productsTheme · Healthcare: biopharma and medtech· L3VLUP-defined
Quarter
Q2 2025Q4 2024Q3 2024Q2 2024Q1 2024Q3 2020Q2 2020Q1 2020Q4 2019Q3 2019
Quarter end
31 Mar 2020
the date the book describes
Filed
13 May 2020
up to 45 days after the quarter end
Managers listing it
1
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2019 and Q1 2020; 1 listed it in both
Shares listed
587,444
combined, among listed positions
Reported value
$1.6m
combined, at the quarter end

Managers listing ATYR in Q1 2020

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2019, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

1 of 1 holder

ActionFiling
Viking Global Investors LP587,444$1.6munder 0.1%Added+358,16113 May 2020 (the filing on sec.gov)

Largest increases and reductions, by shares

Q4 2019 to Q1 2020, among managers that listed it in both quarters or opened it.

Increases

Reductions

No reduction among listed positions.

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (0)

No new position among listed positions.

Exited (0)

No exit shown by a manager’s own filing.

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
1 in Q1 2020 to 1 in Q2 2025

Tracked managers listing it, at least.

01122Q3 2019Q4 2019Q1 2020Q2 2020Q3 2020Q1 2024Q2 2024Q3 2024Q4 2024Q2 2025
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
ATYR by quarter
QuarterHoldersReported valueBuyersSellers
Q3 20191$802kn.a.n.a.
Q4 20191$956kn.a.n.a.
Q1 20201$1.6mn.a.n.a.
Q2 20201$2.6mn.a.n.a.
Q3 20201$1.9mn.a.n.a.
Q1 20241$3.3m10
Q2 20241$2.6m10
Q3 20241$3.0m10
Q4 20242$24m11
Q2 20251$8.5m00

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

ATYR and GILD →ATYR and AMGN →ATYR and ARGX →Choose a stock to compare with ATYR →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own ATYR, latest filings →Back to the 13F Explorer →