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SIBN · VRTX in the 13F filings

Two to four stocks side by side among the 95 tracked managers: who lists them, how that has moved, who bought and sold in a quarter, and which managers hold more than one.

SIBNVRTX
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023

Holders over time

Tracked managers listing each stock every quarter, at least, or their combined reported value. A gap is a quarter in which no tracked manager listed it. Click a quarter to compare there.
  • SIBN
  • VRTX
010203040202120222023202420252026
Holders and value by quarter
QuarterSIBNVRTX
Q3 2020none listed holders, n.a.31 holders, $21.9bn
Q4 20202 holders, $18m30 holders, $18.4bn
Q1 20212 holders, $27m31 holders, $15.4bn
Q2 20212 holders, $27m30 holders, $12.7bn
Q3 20212 holders, $26m35 holders, $10.1bn
Q4 20211 holders, $27m28 holders, $12.4bn
Q1 20223 holders, $47m23 holders, $16.1bn
Q2 20222 holders, $34m25 holders, $18.1bn
Q3 20223 holders, $48m22 holders, $18.4bn
Q4 20223 holders, $29m28 holders, $18.4bn
Q1 20231 holders, $16m26 holders, $21.4bn
Q2 20231 holders, $16m27 holders, $24.7bn
Q3 20231 holders, $12m33 holders, $24.3bn
Q4 20231 holders, $12m32 holders, $28.6bn
Q1 20241 holders, $9.6m31 holders, $29.8bn
Q2 20241 holders, $7.6m29 holders, $33.4bn
Q3 20241 holders, $8.2m27 holders, $33.5bn
Q4 20242 holders, $11m26 holders, $28.5bn
Q1 20252 holders, $13m21 holders, $35.4bn
Q2 20253 holders, $19m21 holders, $32.3bn
Q3 20252 holders, $8.1m22 holders, $25.9bn
Q4 20252 holders, $12m26 holders, $31.8bn
Q1 20261 holders, $8.1m25 holders, $31.8bn
Q2 20261 holders, $13m26 holders, $34.6bn
SIBN

Si Bone Inc

Holders
2
Reported value
$13m
Buyers
1
Sellers
0

Breadth +1 among 95 comparable managers.

Medical devices and instrumentsHealthcare: biopharma and medtech · L3VLUPSurgical, medical and electromedical devices
VRTX

Vertex Pharmaceuticals Inc

Holders
21
Reported value
$35.4bn
Buyers
10
Sellers
11

Breadth -1 among 95 comparable managers.

Pharmaceuticals and biotechnologyHealthcare: biopharma and medtech · L3VLUPPharmaceutical preparations

Who holds both, Q1 2025

Among the 23 tracked managers listing any of them. "Only" is about listed positions: a manager may hold the other below its listed range.

Both (0)

No tracked manager lists every one of them.

Only SIBN (2)

First Eagle Investment Management LLC, Holocene Advisors LP

Only VRTX (21)

AllianceBernstein LP, AQR Capital Management LLC, ARK Investment Management LLC, Artisan Partners LP, Baillie Gifford & Co, Capital Research Global Investors, Capital World Investors, Element Capital Management LLC, Fidelity (FMR LLC), Hudson Bay Capital Management LP, Invesco Ltd, Janus Henderson Group Ltd, Marshall Wace LLP, MFS Investment Management, Millennium Management LLC, Neuberger Berman Group LLC, PDT Partners LLC, Renaissance Technologies LLC, T. Rowe Price Associates Inc, Wellington Management Group LLP, Woodline Partners LP

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. Buyers and sellers count comparable managers (those that filed both quarters) by shares, so a rise in value with no rise in shares is the price. Large books are listed to their largest positions. These are 95 tracked managers, not the institutional market.

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