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SIBN in the 13F filings

Si Bone Inc · CUSIP 825704109

Sector · Medical devices and instrumentsTheme · Healthcare: biopharma and medtech· L3VLUP-definedTheme · Surgical, medical and electromedical devices
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
30 Jun 2026
the date the book describes
Filed
2 Sep 2026
latest of these filings; the earliest 5 Aug 2026
Managers listing it
20
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q1 2026 and Q2 2026; 1 listed it in both
Shares listed
4,493,161
combined, among listed positions
Reported value
$73m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 13 buyers (opened or added shares) and 12 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +160,627.

Managers listing SIBN in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

20 of 20 holders

ActionFiling
Point72 Asset Management LP790,323$13munder 0.1%Trimmed-50,02314 Aug 2026 (the filing on sec.gov)
First Eagle Investment Management LLC768,941$13munder 0.1%Added+130,0005 Aug 2026 (the filing on sec.gov)
Wellington Management Group LLP742,857$12munder 0.1%Trimmed-29,75514 Aug 2026 (the filing on sec.gov)
Marshall Wace LLP690,288$11munder 0.1%Added+522,16013 Aug 2026 (the filing on sec.gov)
Millennium Management LLC364,286$5.9munder 0.1%Trimmed-5,01714 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC253,848$4.1munder 0.1%Added+196,14714 Aug 2026 (the filing on sec.gov)
D. E. Shaw & Co.185,868$3.0munder 0.1%Trimmed-3,16014 Aug 2026 (the filing on sec.gov)
Tudor Investment Corp131,414$2.1munder 0.1%Added+1,29814 Aug 2026 (the filing on sec.gov)
Squarepoint Ops LLC118,128$1.9munder 0.1%Added+33,94714 Aug 2026 (the filing on sec.gov)
Balyasny Asset Management LLC100,364$1.6munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc66,255$1.1munder 0.1%Added+16,42114 Aug 2026 (the filing on sec.gov)
Jane Street Group LLC64,793$1.1munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Invesco Ltd62,236$1.0munder 0.1%Added+6,70814 Aug 2026 (the filing on sec.gov)
Renaissance Technologies LLC44,100$720kunder 0.1%Trimmed-428,51913 Aug 2026 (the filing on sec.gov)
Arrowstreet Capital LP31,515$514kunder 0.1%Newnew13 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP36,350$459kunder 0.1%Added+60014 Aug 2026 (the filing on sec.gov)
Acadian Asset Management LLC24,658$399kunder 0.1%Trimmed-38,54113 Aug 2026 (the filing on sec.gov)
Janus Henderson Group Ltd12,782$209kunder 0.1%Held014 Aug 2026 (the filing on sec.gov)
Fidelity (FMR LLC)3,173$52kunder 0.1%Added+1,10713 Aug 2026 (the filing on sec.gov)
Quantbot Technologies LP982$16kunder 0.1%Newnew12 Aug 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q1 2026 to Q2 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

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

New (4)

Exited (6)

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 →