L3VLUP
Quarter end
31 Mar 2025
the date the book describes
Filed
15 May 2025
latest of these filings; the earliest 12 May 2025
Managers listing it
2
at least, of 95 tracked, among listed positions
Comparable managers
95
filed both Q4 2024 and Q1 2025; 2 listed it in both
Shares listed
893,049
combined, among listed positions
Reported value
$13m
combined, at the quarter end

Among the 95 comparable managers: 1 buyer (opened or added shares) and 0 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +122,290.

Managers listing SIBN in Q1 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2024, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

2 of 2 holders

ActionFiling
Holocene Advisors LP585,311$8.2munder 0.1%Held015 May 2025 (the filing on sec.gov)
First Eagle Investment Management LLC307,738$4.3munder 0.1%Added+122,29012 May 2025 (the filing on sec.gov)

Largest increases and reductions, by shares

Q4 2024 to Q1 2025, 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 Q3 2024 to 1 in Q2 2026

Tracked managers listing it, at least.

0123202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
SIBN by quarter
QuarterHoldersReported valueBuyersSellers
Q4 20202$18mn.a.n.a.
Q1 20212$27mn.a.n.a.
Q2 20212$27mn.a.n.a.
Q3 20212$26mn.a.n.a.
Q4 20211$27mn.a.n.a.
Q1 20223$47mn.a.n.a.
Q2 20222$34mn.a.n.a.
Q3 20223$48mn.a.n.a.
Q4 20223$29mn.a.n.a.
Q1 20231$16mn.a.n.a.
Q2 20231$16mn.a.n.a.
Q3 20231$12mn.a.n.a.
Q4 20231$12m00
Q1 20241$9.6m00
Q2 20241$7.6m00
Q3 20241$8.2m00
Q4 20242$11m10
Q1 20252$13m10
Q2 20253$19m20
Q3 20252$8.1m11
Q4 20252$12m1611
Q1 20261$8.1m1117
Q2 20261$13m1312

Compare with…

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

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

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