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QTRX · 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.

QTRXVRTX
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.
  • QTRX
  • VRTX
010203040202120222023202420252026
Holders and value by quarter
QuarterQTRXVRTX
Q3 2020none listed holders, n.a.31 holders, $21.9bn
Q4 20203 holders, $53m30 holders, $18.4bn
Q1 20214 holders, $131m31 holders, $15.4bn
Q2 20213 holders, $150m30 holders, $12.7bn
Q3 20213 holders, $135m35 holders, $10.1bn
Q4 20213 holders, $116m28 holders, $12.4bn
Q1 20223 holders, $78m23 holders, $16.1bn
Q2 20222 holders, $14m25 holders, $18.1bn
Q3 20222 holders, $7.1m22 holders, $18.4bn
Q4 20222 holders, $24m28 holders, $18.4bn
Q1 20232 holders, $7.5m26 holders, $21.4bn
Q2 20232 holders, $15m27 holders, $24.7bn
Q3 20233 holders, $39m33 holders, $24.3bn
Q4 20233 holders, $27m32 holders, $28.6bn
Q1 20242 holders, $26m31 holders, $29.8bn
Q2 20242 holders, $9.4m29 holders, $33.4bn
Q3 20241 holders, $8.2m27 holders, $33.5bn
Q4 20241 holders, $6.7m26 holders, $28.5bn
Q1 20251 holders, $3.9m21 holders, $35.4bn
Q2 20251 holders, $4.0m21 holders, $32.3bn
Q3 2025none listed holders, n.a.22 holders, $25.9bn
Q4 20252 holders, $3.7m26 holders, $31.8bn
Q1 20261 holders, $4.6m25 holders, $31.8bn
Q2 20261 holders, $12m26 holders, $34.6bn
QTRX

Quanterix Corp

Holders
3
Reported value
$27m
Buyers
2
Sellers
2

Breadth 0 among 93 comparable managers.

Medical devices and instrumentsHealthcare: biopharma and medtech · L3VLUP
VRTX

Vertex Pharmaceuticals Inc

Holders
32
Reported value
$28.6bn
Buyers
16
Sellers
16

Breadth 0 among 93 comparable managers.

Pharmaceuticals and biotechnologyHealthcare: biopharma and medtech · L3VLUPPharmaceutical preparations

Who holds both, Q4 2023

Among the 34 tracked managers listing any of them. "Only" is about listed positions: a manager may hold the other below its listed range.

Only QTRX (2)

Baillie Gifford & Co, ExodusPoint Capital Management LP

Only VRTX (31)

Acadian Asset Management LLC, AllianceBernstein LP, AQR Capital Management LLC, ARK Investment Management LLC, Artisan Partners LP, Brevan Howard Capital Management LP, Bridgewater Associates LP, Capital Research Global Investors, Capital World Investors, Caxton Associates LLP, D. E. Shaw & Co., Fidelity (FMR LLC), Hudson Bay Capital Management LP, Invesco Ltd, Janus Henderson Group Ltd, Man Group PLC, Marshall Wace LLP, Maverick Capital Ltd, MFS Investment Management, Millennium Management LLC, Neuberger Berman Group LLC, PDT Partners LLC, Renaissance Technologies LLC, T. Rowe Price Associates Inc, Tudor Investment Corp, and 6 more

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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