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SIGA in the 13F filings

Siga Technologies Inc · CUSIP 826917106

Sector · Pharmaceuticals and biotechnologyTheme · Healthcare: biopharma and medtech· L3VLUP-definedTheme · Pharmaceutical preparations
Quarter
Q3 2025Q4 2024Q3 2024Q2 2024Q1 2023Q3 2022Q3 2020Q2 2020Q1 2020Q4 2019Q3 2019Q2 2019
Quarter end
31 Mar 2023
the date the book describes
Filed
15 May 2023
up to 45 days after the quarter end
Managers listing it
1
at least, of 95 tracked, among listed positions
Comparable managers
93
filed both Q4 2022 and Q1 2023; 0 listed it in both
Shares listed
22,477
combined, among listed positions
Reported value
$129k
combined, at the quarter end

Managers listing SIGA in Q1 2023

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2022, 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
Caxton Associates LLP22,477$129kunder 0.1%Newnew15 May 2023 (the filing on sec.gov)

Largest increases and reductions, by shares

There is no earlier quarter on file to compare with.

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 (1)

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 Q2 2020 to 1 in Q3 2025

Tracked managers listing it, at least.

01122201920202023
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
SIGA by quarter
QuarterHoldersReported valueBuyersSellers
Q3 20142$682kn.a.n.a.
Q4 20142$678kn.a.n.a.
Q2 20181$446kn.a.n.a.
Q3 20182$4.4mn.a.n.a.
Q1 20191$959kn.a.n.a.
Q2 20191$908kn.a.n.a.
Q3 20191$817kn.a.n.a.
Q4 20191$762kn.a.n.a.
Q1 20201$763kn.a.n.a.
Q2 20201$944kn.a.n.a.
Q3 20201$1.1mn.a.n.a.
Q3 20221$10mn.a.n.a.
Q1 20231$129kn.a.n.a.
Q2 20241$1.1m10
Q3 20241$985k10
Q4 20241$611k01
Q3 20251$966k10

Compare with…

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

SIGA and LLY →SIGA and JNJ →SIGA and VRTX →Choose a stock to compare with SIGA →

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 SIGA, latest filings →Back to the 13F Explorer →